AVCodecContext Struct Reference

main external API structure. More...

#include <avcodec.h>

Data Fields

const AVClassav_class
 information on struct for av_log
int log_level_offset
enum AVMediaType codec_type
struct AVCodeccodec
char codec_name [32]
enum AVCodecID codec_id
unsigned int codec_tag
 fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
unsigned int stream_codec_tag
 fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
voidpriv_data
struct AVCodecInternalinternal
 Private context used for internal data.
voidopaque
 Private data of the user, can be used to carry app specific stuff.
int bit_rate
 the average bitrate
int bit_rate_tolerance
 number of bits the bitstream is allowed to diverge from the reference.
int global_quality
 Global quality for codecs which cannot change it per frame.
int compression_level
int flags
 CODEC_FLAG_*.
int flags2
 CODEC_FLAG2_*.
uint8_textradata
 some codecs need / can use extradata like Huffman tables.
int extradata_size
AVRational time_base
 This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
int ticks_per_frame
 For some codecs, the time base is closer to the field rate than the frame rate.
int delay
 Codec delay.
int width
 picture width / height.
int height
int coded_width
 Bitstream width / height, may be different from width/height.
int coded_height
int gop_size
 the number of pictures in a group of pictures, or 0 for intra_only
enum AVPixelFormat pix_fmt
 Pixel format, see AV_PIX_FMT_xxx.
int me_method
 Motion estimation algorithm used for video coding.
void(* draw_horiz_band )(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height)
 If non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw a horizontal band.
enum AVPixelFormat(* get_format )(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
 callback to negotiate the pixelFormat
int max_b_frames
 maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 relative to the input.
float b_quant_factor
 qscale factor between IP and B-frames If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
int rc_strategy
 obsolete FIXME remove
int b_frame_strategy
float b_quant_offset
 qscale offset between IP and B-frames
int has_b_frames
 Size of the frame reordering buffer in the decoder.
int mpeg_quant
 0-> h263 quant 1-> mpeg quant
float i_quant_factor
 qscale factor between P and I-frames If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
float i_quant_offset
 qscale offset between P and I-frames
float lumi_masking
 luminance masking (0-> disabled)
float temporal_cplx_masking
 temporary complexity masking (0-> disabled)
float spatial_cplx_masking
 spatial complexity masking (0-> disabled)
float p_masking
 p block masking (0-> disabled)
float dark_masking
 darkness masking (0-> disabled)
int slice_count
 slice count
int prediction_method
 prediction method (needed for huffyuv)
int * slice_offset
 slice offsets in the frame in bytes
AVRational sample_aspect_ratio
 sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel.
int me_cmp
 motion estimation comparison function
int me_sub_cmp
 subpixel motion estimation comparison function
int mb_cmp
 macroblock comparison function (not supported yet)
int ildct_cmp
 interlaced DCT comparison function
int dia_size
 ME diamond size & shape.
int last_predictor_count
 amount of previous MV predictors (2a+1 x 2a+1 square)
int pre_me
 prepass for motion estimation
int me_pre_cmp
 motion estimation prepass comparison function
int pre_dia_size
 ME prepass diamond size & shape.
int me_subpel_quality
 subpel ME quality
int dtg_active_format
 DTG active format information (additional aspect ratio information only used in DVB MPEG-2 transport streams) 0 if not set.
int me_range
 maximum motion estimation search range in subpel units If 0 then no limit.
int intra_quant_bias
 intra quantizer bias
int inter_quant_bias
 inter quantizer bias
int slice_flags
 slice flags
int xvmc_acceleration
 XVideo Motion Acceleration.
int mb_decision
 macroblock decision mode
uint16_t * intra_matrix
 custom intra quantization matrix
uint16_t * inter_matrix
 custom inter quantization matrix
int scenechange_threshold
 scene change detection threshold 0 is default, larger means fewer detected scene changes.
int noise_reduction
 noise reduction strength
int me_threshold
 Motion estimation threshold below which no motion estimation is performed, but instead the user specified motion vectors are used.
int mb_threshold
 Macroblock threshold below which the user specified macroblock types will be used.
int intra_dc_precision
 precision of the intra DC coefficient - 8
int skip_top
 Number of macroblock rows at the top which are skipped.
int skip_bottom
 Number of macroblock rows at the bottom which are skipped.
float border_masking
 Border processing masking, raises the quantizer for mbs on the borders of the picture.
int mb_lmin
 minimum MB lagrange multipler
int mb_lmax
 maximum MB lagrange multipler
int me_penalty_compensation
int bidir_refine
int brd_scale
int keyint_min
 minimum GOP size
int refs
 number of reference frames
int chromaoffset
 chroma qp offset from luma
int scenechange_factor
 Multiplied by qscale for each frame and added to scene_change_score.
int mv0_threshold
 Note: Value depends upon the compare function used for fullpel ME.
int b_sensitivity
 Adjust sensitivity of b_frame_strategy 1.
enum AVColorPrimaries color_primaries
 Chromaticity coordinates of the source primaries.
enum AVColorTransferCharacteristic color_trc
 Color Transfer Characteristic.
enum AVColorSpace colorspace
 YUV colorspace type.
enum AVColorRange color_range
 MPEG vs JPEG YUV range.
enum AVChromaLocation chroma_sample_location
 This defines the location of chroma samples.
int slices
 Number of slices.
enum AVFieldOrder field_order
 Field order.
int sample_rate
 samples per second
int channels
 number of audio channels
enum AVSampleFormat sample_fmt
 audio sample format
int frame_size
 Number of samples per channel in an audio frame.
int frame_number
 Frame counter, set by libavcodec.
int block_align
 number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs.
int cutoff
 Audio cutoff bandwidth (0 means "automatic")
uint64_t channel_layout
 Audio channel layout.
uint64_t request_channel_layout
 Request decoder to use this channel layout if it can (0 for default)
enum AVAudioServiceType audio_service_type
 Type of service that the audio stream conveys.
enum AVSampleFormat request_sample_fmt
 Used to request a sample format from the decoder.
int(* get_buffer )(struct AVCodecContext *c, AVFrame *pic)
 Called at the beginning of each frame to get a buffer for it.
void(* release_buffer )(struct AVCodecContext *c, AVFrame *pic)
 Called to release buffers which were allocated with get_buffer.
int(* reget_buffer )(struct AVCodecContext *c, AVFrame *pic)
 Called at the beginning of a frame to get cr buffer for it.
float qcompress
 amount of qscale change between easy & hard scenes (0.0-1.0)
float qblur
 amount of qscale smoothing over time (0.0-1.0)
int qmin
 minimum quantizer
int qmax
 maximum quantizer
int max_qdiff
 maximum quantizer difference between frames
float rc_qsquish
 ratecontrol qmin qmax limiting method 0-> clipping, 1-> use a nice continuous function to limit qscale wthin qmin/qmax.
float rc_qmod_amp
int rc_qmod_freq
int rc_buffer_size
 decoder bitstream buffer size
int rc_override_count
 ratecontrol override, see RcOverride
RcOverriderc_override
const char * rc_eq
 rate control equation
int rc_max_rate
 maximum bitrate
int rc_min_rate
 minimum bitrate
float rc_buffer_aggressivity
float rc_initial_cplx
 initial complexity for pass1 ratecontrol
float rc_max_available_vbv_use
 Ratecontrol attempt to use, at maximum, of what can be used without an underflow.
float rc_min_vbv_overflow_use
 Ratecontrol attempt to use, at least, times the amount needed to prevent a vbv overflow.
int rc_initial_buffer_occupancy
 Number of bits which should be loaded into the rc buffer before decoding starts.
int coder_type
 coder type
int context_model
 context model
int lmin
 minimum Lagrange multipler
int lmax
 maximum Lagrange multipler
int frame_skip_threshold
 frame skip threshold
int frame_skip_factor
 frame skip factor
int frame_skip_exp
 frame skip exponent
int frame_skip_cmp
 frame skip comparison function
int trellis
 trellis RD quantization
int min_prediction_order
int max_prediction_order
int64_t timecode_frame_start
 GOP timecode frame start number, in non drop frame format.
void(* rtp_callback )(struct AVCodecContext *avctx, void *data, int size, int mb_nb)
int rtp_payload_size
int mv_bits
int header_bits
int i_tex_bits
int p_tex_bits
int i_count
int p_count
int skip_count
int misc_bits
int frame_bits
 number of bits used for the previously encoded frame
char * stats_out
 pass1 encoding statistics output buffer
char * stats_in
 pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed here.
int workaround_bugs
 Work around bugs in encoders which sometimes cannot be detected automatically.
int strict_std_compliance
 strictly follow the standard (MPEG4, ...).
int error_concealment
 error concealment flags
int debug
 debug
int debug_mv
 debug
int err_recognition
 Error recognition; may misdetect some more or less valid parts as errors.
int64_t reordered_opaque
 opaque 64bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque
struct AVHWAccelhwaccel
 Hardware accelerator in use.
voidhwaccel_context
 Hardware accelerator context.
uint64_t error [AV_NUM_DATA_POINTERS]
 error
int dct_algo
 DCT algorithm, see FF_DCT_* below.
int idct_algo
 IDCT algorithm, see FF_IDCT_* below.
int bits_per_coded_sample
 bits per sample/pixel from the demuxer (needed for huffyuv).
int bits_per_raw_sample
 Bits per sample/pixel of internal libavcodec pixel/sample format.
attribute_deprecated int lowres
 low resolution decoding, 1-> 1/2 size, 2->1/4 size
AVFramecoded_frame
 the picture in the bitstream
int thread_count
 thread count is used to decide how many independent tasks should be passed to execute()
int thread_type
 Which multithreading methods to use.
int active_thread_type
 Which multithreading methods are in use by the codec.
int thread_safe_callbacks
 Set by the client if its custom get_buffer() callback can be called synchronously from another thread, which allows faster multithreaded decoding.
int(* execute )(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
 The codec may call this to execute several independent things.
int(* execute2 )(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
 The codec may call this to execute several independent things.
voidthread_opaque
 thread opaque Can be used by execute() to store some per AVCodecContext stuff.
int nsse_weight
 noise vs.
int profile
 profile
int level
 level
enum AVDiscard skip_loop_filter
enum AVDiscard skip_idct
enum AVDiscard skip_frame
uint8_tsubtitle_header
 Header containing style information for text subtitles.
int subtitle_header_size
int error_rate
 Simulates errors in the bitstream to test error concealment.
AVPacketpkt
 Current packet as passed into the decoder, to avoid having to pass the packet into every function.
uint64_t vbv_delay
 VBV delay coded in the last frame (in periods of a 27 MHz clock).

Detailed Description

main external API structure.

New fields can be added to the end with minor version bumps. Removal, reordering and changes to existing fields require a major version bump. sizeof(AVCodecContext) must not be used outside libav*.

Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1338 of file avcodec.h.

Field Documentation

enum AVAudioServiceType AVCodecContext::audio_service_type

Type of service that the audio stream conveys.

  • encoding: Set by user.
  • decoding: Set by libavcodec.

Definition at line 2178 of file avcodec.h.

Referenced by ac3_decode_frame(), avformat_find_stream_info(), ff_aac_ac3_parse(), ff_ac3_encode_init(), ff_ac3_validate_metadata(), mov_read_dac3(), mov_read_dec3(), and transcode_init().

const AVClass* AVCodecContext::av_class

information on struct for av_log

  • set by avcodec_alloc_context3

Definition at line 1343 of file avcodec.h.

Referenced by avcodec_get_context_defaults3().

int AVCodecContext::b_frame_strategy
float AVCodecContext::b_quant_factor

qscale factor between IP and B-frames If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).

If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).

  • encoding: Set by user.
  • decoding: unused

Definition at line 1596 of file avcodec.h.

Referenced by add_codec(), ff_xvid_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), get_qscale(), X264_init(), XAVS_init(), and xvid_encode_init().

float AVCodecContext::b_quant_offset

qscale offset between IP and B-frames

  • encoding: Set by user.
  • decoding: unused

Definition at line 1625 of file avcodec.h.

Referenced by add_codec(), ff_xvid_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), get_qscale(), and xvid_encode_init().

int AVCodecContext::b_sensitivity

Adjust sensitivity of b_frame_strategy 1.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2050 of file avcodec.h.

Referenced by select_input_picture().

int AVCodecContext::bidir_refine
  • encoding: Set by user.
  • decoding: unused

Definition at line 2000 of file avcodec.h.

Referenced by bidir_refine().

int AVCodecContext::bit_rate

the average bitrate

  • encoding: Set by user; unused for constant quantizer encoding.
  • decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1403 of file avcodec.h.

Referenced by aac_encode_frame(), aac_encode_init(), ac3_decode_frame(), add_audio_stream(), add_av_stream(), add_codec(), add_video_stream(), aea_read_header(), amf_parse_object(), amr_read_packet(), amr_wb_encode_frame(), amr_wb_encode_init(), apc_read_header(), asf_read_header(), asf_write_header1(), audio_encode_example(), avformat_new_stream(), avi_write_header(), avisynth_read_header(), avpriv_adx_decode_header(), avpriv_dv_init_demux(), avpriv_dv_produce_packet(), bfi_read_header(), check_stream_max_drift(), cin_read_header(), compute_bandwidth(), compute_status(), daud_header(), dc1394_read_common(), dca_decode_frame(), decode_frame(), decode_ppc(), dv_extract_audio_info(), dv_extract_video_info(), ea_read_header(), encode_init(), estimate_timings_from_bit_rate(), Faac_encode_init(), fbdev_read_header(), ff_aac_ac3_parse(), ff_dnxhd_find_cid(), ff_dv_offset_reset(), ff_MPV_encode_init(), ff_pcm_read_seek(), ff_voc_get_packet(), ff_wma_init(), ff_xvid_rate_control_init(), ffm_read_header(), ffm_write_header(), film_read_header(), find_stream_in_feed(), flv_write_header(), get_aiff_header(), get_bit_rate(), get_mode(), get_sindex(), gsm_read_header(), gxf_write_header(), gxf_write_mpeg_auxiliary(), handle_file(), idcin_read_header(), iff_read_header(), ilbc_read_header(), init_bitstream_params(), ipmovie_read_header(), ism_write_header(), iss_read_header(), lame_window_init(), libgsm_encode_init(), libopus_configure_encoder(), libopus_encode_init(), libschroedinger_encode_init(), lxf_read_header(), matroska_read_header(), mlp_parse(), mmf_read_header(), modify_current_stream(), mov_build_index(), mov_read_header(), mov_write_esds_tag(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mp3_parse_vbr_tags(), mp3_write_xing(), mp3lame_encode_init(), MPA_encode_init(), mpeg_decode_postinit(), mpeg_mux_init(), mpegaudio_parse(), mpegps_read_packet(), mpegts_read_header(), mpegvideo_extract_headers(), mtv_read_header(), mxf_write_d10_video_packet(), mxf_write_header(), mxf_write_mpegvideo_desc(), oggvorbis_init_encoder(), ogm_dshow_header(), ogm_header(), oma_read_header(), parse_ffconfig(), parse_mpeg1waveformatex(), parse_strk(), pcm_bluray_parse_header(), pcm_encode_init(), print_enc_params(), psy_3gpp_init(), psy_3gpp_window(), qcp_read_header(), qdm2_decode_init(), ra144_encode_init(), read_desc_chunk(), read_header(), real_parse_asm_rule(), rl2_read_header(), rm_read_header(), rm_write_header(), roq_dpcm_encode_init(), roq_read_packet(), rv10_write_header(), s302m_parse_frame_header(), search_for_quantizers_twoloop(), seq_read_header(), show_stream(), sipr_decoder_init(), sox_read_header(), tmv_read_header(), transcode_init(), twin_decode_frame(), twin_decode_init(), v4l2_read_header(), validate_options(), vid_read_packet(), video_encode_example(), vmd_read_header(), vorbis_encode_init(), vorbis_header(), vp8_init(), vqf_read_header(), vqf_read_seek(), wc3_read_header(), write_manifest(), wsaud_read_header(), x11grab_read_header(), X264_init(), xa_read_header(), XAVS_init(), xmv_read_header(), xvid_encode_init(), and xwma_read_header().

int AVCodecContext::bit_rate_tolerance

number of bits the bitstream is allowed to diverge from the reference.

      the reference can be CBR (for CBR pass1) or VBR (for pass2)
  • encoding: Set by user; unused for constant quantizer encoding.
  • decoding: unused

Definition at line 1411 of file avcodec.h.

Referenced by add_codec(), ff_MPV_encode_init(), ff_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), parse_ffconfig(), and XAVS_init().

int AVCodecContext::bits_per_coded_sample

bits per sample/pixel from the demuxer (needed for huffyuv).

  • encoding: Set by libavcodec.
  • decoding: Set by user.

Definition at line 2703 of file avcodec.h.

Referenced by adpcm_decode_init(), adpcm_encode_init(), aiff_write_header(), amf_parse_object(), apc_read_header(), ape_decode_init(), ape_read_header(), asf_read_stream_properties(), av_get_audio_frame_duration(), avformat_find_stream_info(), avi_read_header(), avisynth_read_header(), avs_read_packet(), bfi_read_header(), bmp_encode_frame(), bmp_encode_init(), cin_read_header(), cinepak_decode_init(), create_audio_stream(), daud_header(), decode_channel(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), decode_init(), decode_wave_header(), deplanarize(), ea_read_header(), encode_init(), ff_cmap_read_palette(), ff_mov_read_stsd_entries(), ff_voc_get_packet(), film_read_header(), flv_read_packet(), flv_same_audio_codec(), flv_set_audio_codec(), g722_read_header(), get_aiff_header(), get_audio_flags(), get_codec_data(), get_packet_header(), get_sindex(), idcin_read_header(), iff_read_header(), ipmovie_read_header(), ipvideo_decode_init(), iss_read_header(), mmf_read_header(), mov_get_rawvideo_codec_tag(), mov_write_video_tag(), mpc8_read_header(), mpc_read_header(), mpegps_read_packet(), msrle_decode_frame(), msrle_decode_init(), msvideo1_decode_init(), mxf_get_d10_aes3_packet(), mxf_parse_structural_metadata(), mxg_read_header(), nsv_parse_NSVs_header(), nuv_header(), oma_read_header(), parse_media_type(), parse_strk(), pcm_bluray_parse_header(), pcm_decode_frame(), pcm_encode_init(), pcm_read_header(), qtrle_decode_frame(), qtrle_decode_init(), qtrle_encode_init(), raw_decode(), raw_init_decoder(), raw_init_encoder(), read_desc_chunk(), read_header(), rl2_read_header(), roq_read_packet(), rpl_read_header(), rtp_write_packet(), s302m_decode_frame(), s302m_parse_frame_header(), seq_read_header(), set_bps_params(), smacker_read_header(), smjpeg_read_header(), smka_decode_init(), sox_read_header(), tak_decode_frame(), tak_read_header(), tmv_read_header(), tta_decode_init(), tta_read_header(), update_context_from_thread(), vfw_read_header(), vid_read_packet(), vmd_read_header(), vmdaudio_decode_init(), voc_write_packet(), wavpack_decode_init(), wc3_read_header(), wsaud_read_header(), wsvqa_read_packet(), wv_read_header(), xmv_read_header(), and xwma_read_header().

int AVCodecContext::bits_per_raw_sample

Bits per sample/pixel of internal libavcodec pixel/sample format.

  • encoding: set by user.
  • decoding: set by libavcodec.

Definition at line 2710 of file avcodec.h.

Referenced by alac_decode_init(), alac_encode_frame(), alac_encode_init(), avpriv_flac_parse_streaminfo(), cllc_decode_frame(), copy_samples(), decode_frame(), decode_init(), decode_plane(), decode_rgb_frame(), decode_slice(), dnxhd_decode_header(), dnxhd_encode_init(), dsputil_init_3dnow(), dsputil_init_avx(), dsputil_init_mmx(), dsputil_init_mmxext(), dsputil_init_sse(), dsputil_init_sse2(), dsputil_init_ssse3(), encode_init(), encode_rgb_frame(), ff_dct_common_init(), ff_dsputil_init(), ff_dsputil_init_align(), ff_dsputil_init_alpha(), ff_dsputil_init_altivec(), ff_dsputil_init_arm(), ff_dsputil_init_armv5te(), ff_dsputil_init_armv6(), ff_dsputil_init_bfin(), ff_dsputil_init_neon(), ff_dsputil_init_ppc(), ff_dsputil_init_sh4(), ff_dsputil_init_vis(), ff_h264_decode_init(), ffv1_decode_frame(), ffv1_encode_init(), flac_encode_frame(), flac_encode_init(), h264_set_parameter_from_sps(), init_frame(), init_sample_buffers(), libopenjpeg_decode_frame(), mlp_parse(), pcm_bluray_parse_header(), pcm_decode_init(), read_const_block_data(), read_extra_header(), read_header(), read_major_sync(), read_var_block_data(), set_bps_params(), transcode_init(), tta_decode_init(), update_context_from_thread(), update_md5_sum(), v410_decode_init(), vble_decode_init(), wavpack_decode_frame(), write_element(), write_streaminfo(), and zerocodec_decode_init().

int AVCodecContext::block_align

number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs.

Definition at line 2140 of file avcodec.h.

Referenced by adpcm_encode_init(), aea_read_header(), aea_read_packet(), aiff_read_header(), aiff_read_packet(), aiff_write_header(), aiff_write_trailer(), apc_read_header(), asf_write_header1(), atrac1_decode_frame(), atrac3_decode_frame(), atrac3_decode_init(), av_get_audio_frame_duration(), avi_read_header(), avi_write_packet(), avisynth_read_header(), cook_decode_frame(), cook_decode_init(), daud_header(), decode_frame(), decode_init(), decode_packet(), dxa_read_header(), ea_read_header(), encode_frame(), encode_init(), encode_superframe(), ff_mov_read_stsd_entries(), ff_pcm_read_seek(), ff_rm_parse_packet(), ff_rm_retrieve_cache(), ff_wma_init(), film_read_header(), get_aiff_header(), get_mode(), get_nb_samples(), get_sindex(), gsm_decode_frame(), gsm_init(), handle_file(), idcin_read_header(), iff_read_header(), ilbc_encode_init(), ilbc_parse_fmtp(), ilbc_parse_sdp_line(), ilbc_read_header(), ilbc_read_packet(), ilbc_write_header(), init_muxer(), ipmovie_read_header(), ism_write_header(), iss_read_header(), libgsm_decode_frame(), libgsm_decode_init(), libgsm_encode_frame(), libgsm_encode_init(), matroska_parse_block(), matroska_parse_rm_audio(), matroska_read_header(), mov_write_header(), mov_write_isml_manifest(), mxf_write_d10_audio_packet(), mxf_write_wav_common(), mxg_read_header(), oma_read_header(), oma_read_packet(), oma_write_header(), parse_strk(), pcm_encode_init(), pcm_read_header(), pcm_read_packet(), ra288_decode_frame(), read_desc_chunk(), rl2_read_header(), rm_read_audio_stream_info(), roq_read_packet(), rtp_send_ilbc(), seq_read_header(), sipr_decoder_init(), sox_read_header(), sox_read_packet(), str_read_packet(), transcode_init(), tta_decode_init(), vmd_read_header(), vmdaudio_decode_frame(), vmdaudio_decode_init(), wc3_read_header(), wma_decode_init(), wma_decode_superframe(), wmavoice_decode_init(), wmavoice_decode_packet(), xmv_read_header(), xwma_read_header(), and xwma_read_packet().

float AVCodecContext::border_masking

Border processing masking, raises the quantizer for mbs on the borders of the picture.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1972 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

int AVCodecContext::brd_scale
  • encoding: Set by user.
  • decoding: unused

Definition at line 2007 of file avcodec.h.

Referenced by estimate_best_b_count().

uint64_t AVCodecContext::channel_layout

Audio channel layout.

  • encoding: set by user.
  • decoding: set by libavcodec.
Examples:
libavcodec/api-example.c.

Definition at line 2164 of file avcodec.h.

Referenced by ac3_decode_frame(), add_input_streams(), aea_read_header(), alac_decode_init(), amf_parse_object(), amr_decode_fix_avctx(), amr_handle_packet(), amr_read_header(), amrnb_decode_init(), amrwb_decode_init(), apc_read_header(), ape_decode_init(), apply_param_change(), audio_encode_example(), avcodec_open2(), avcodec_string(), bfi_read_header(), bmv_aud_decode_init(), bmv_read_header(), cdxl_read_packet(), cin_read_header(), cinaudio_decode_init(), configure_input_audio_filter(), configure_output_audio_filter(), cook_decode_init(), create_audio_stream(), daud_header(), dca_decode_frame(), decode_audio(), decode_frame(), decode_init(), dprint_options(), dv_extract_audio_info(), ff_aac_ac3_parse(), ff_alsa_open(), ff_flac_set_channel_layout(), ff_get_buffer(), ff_mov_read_chan(), flv_read_packet(), g722_decode_init(), g723_1_decode_init(), g723_1_init(), get_best_header(), get_codec_data(), get_sindex(), gsm_init(), gsm_read_header(), guess_input_channel_layout(), iff_read_header(), ilbc_decode_init(), imc_decode_init(), ipmovie_read_header(), iss_read_header(), libgsm_decode_init(), libopus_decode_init(), libspeex_decode_init(), mlp_parse(), mmf_read_header(), mov_read_dac3(), mov_read_dec3(), mov_write_chan_tag(), mpc7_decode_init(), mpc8_decode_init(), mpc_read_header(), mxg_read_header(), oma_read_header(), output_configure(), parse_mpeg1waveformatex(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), pop_output_configuration(), qcelp_decode_init(), qcp_read_header(), qdm2_decode_init(), ra144_decode_init(), ra288_decode_init(), read_header(), read_restart_header(), rm_read_audio_stream_info(), roq_read_packet(), rso_read_header(), seq_read_header(), sipr_decoder_init(), smacker_read_header(), smka_decode_init(), sol_read_header(), speex_header(), str_read_packet(), stream_component_open(), tak_decode_frame(), tak_read_header(), tmv_read_header(), transcode_init(), truespeech_decode_init(), twin_decode_init(), validate_options(), vid_read_packet(), vmd_read_header(), vmdaudio_decode_init(), vorbis_decode_init(), wavpack_decode_block(), wavpack_decode_init(), wc3_read_header(), wmavoice_decode_init(), ws_snd_decode_init(), wsaud_read_header(), wv_read_header(), and yop_read_header().

int AVCodecContext::channels

number of audio channels

Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 2104 of file avcodec.h.

Referenced by aac_decode_init(), aac_encode_frame(), aac_encode_init(), ac3_decode_frame(), ac3_decode_init(), add_audio_stream(), add_av_stream(), add_codec(), add_input_streams(), adpcm_decode_frame(), adpcm_decode_init(), adpcm_encode_init(), adpcm_swf_decode(), adx_decode_frame(), adx_decode_init(), adx_encode_frame(), adx_encode_header(), adx_encode_init(), adx_read_packet(), aea_read_header(), aiff_write_header(), alac_decode_init(), alac_encode_frame(), alac_encode_init(), amf_parse_object(), amr_decode_fix_avctx(), amr_handle_packet(), amr_read_header(), amr_wb_encode_init(), amrnb_decode_init(), amrwb_decode_init(), apc_read_header(), ape_decode_init(), ape_read_header(), apply_param_change(), apply_window_and_mdct(), atrac1_decode_frame(), atrac1_decode_init(), atrac3_decode_init(), audio_decode_example(), audio_decode_frame(), audio_encode_example(), audio_get_buffer(), audio_read_header(), audio_write_header(), av_get_audio_frame_duration(), avcodec_encode_audio2(), avcodec_open2(), avcodec_string(), avisynth_read_header(), avpriv_adx_decode_header(), avpriv_flac_parse_streaminfo(), bfi_read_header(), bmv_aud_decode_init(), bmv_read_header(), cdata_read_header(), cdxl_read_packet(), celt_header(), cin_read_header(), cinaudio_decode_init(), cng_decode_init(), cng_encode_init(), compute_status(), configure_output_audio_filter(), construct_perm_table(), cook_decode_init(), cook_parse(), create_audio_stream(), create_vorbis_context(), daud_header(), daud_write_header(), dca_decode_frame(), dca_decode_init(), dec_gain(), decode_audio(), decode_block(), decode_channel_transform(), decode_decorrelation_matrix(), decode_extension_payload(), decode_frame(), decode_init(), decode_ppc(), decode_stream_header(), decode_subframe(), decode_tilehdr(), dpcm_decode_frame(), dpcm_decode_init(), dump_context(), dv_extract_audio_info(), dv_init_mux(), ea_read_header(), eightsvx_decode_frame(), eightsvx_decode_init(), encode_block(), encode_frame(), encode_init(), Faac_encode_frame(), Faac_encode_init(), ff_aac_ac3_parse(), ff_ac3_validate_metadata(), ff_audio_interleave_init(), ff_flac_set_channel_layout(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_pcm_read_seek(), ff_psy_init(), ff_psy_preprocess_end(), ff_psy_preprocess_init(), ff_rtp_get_codec_info(), ff_rtp_get_payload_type(), ff_voc_get_packet(), ff_wma_init(), ffm_read_header(), ffm_write_header(), film_read_header(), flac_encode_init(), flush(), flv_read_packet(), flv_write_header(), frame_configure_elements(), g722_decode_init(), g722_encode_init(), g722_read_header(), g723_1_decode_init(), g723_1_init(), get_aiff_header(), get_audio_flags(), get_best_header(), get_bit_rate(), get_codec_data(), get_nb_samples(), get_sindex(), gsm_init(), gsm_read_header(), guess_input_channel_layout(), gxf_write_header(), handle_file(), has_codec_parameters(), idcin_read_header(), iff_read_header(), ilbc_decode_init(), ilbc_encode_init(), ilbc_read_header(), imc_decode_block(), imc_decode_frame(), imc_decode_init(), imdct_output(), init_bitstream_params(), init_mdct_win(), init_muxer(), inverse_channel_transform(), ipmovie_read_header(), iss_read_header(), iss_read_packet(), lame_window_init(), libgsm_decode_init(), libgsm_encode_init(), libopus_decode_init(), libopus_encode(), libopus_encode_init(), libopus_write_header(), libspeex_decode_frame(), libspeex_decode_init(), lxf_read_header(), mace_decode_frame(), mace_decode_init(), matroska_read_header(), mkv_write_tracks(), mlp_parse(), mmf_read_header(), mov_read_dac3(), mov_read_dec3(), mov_write_audio_tag(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mp3_header_compress(), mp3_header_decompress(), mp3_write_xing(), mp3lame_encode_frame(), mp3lame_encode_init(), MPA_encode_init(), mpc7_decode_init(), mpc8_decode_frame(), mpc8_decode_init(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpegaudio_parse(), mpegps_read_packet(), mxf_get_d10_aes3_packet(), mxf_parse_structural_metadata(), mxf_write_d10_audio_packet(), mxf_write_generic_sound_common(), mxg_read_header(), new_audio_stream(), nsv_read_chunk(), oggvorbis_init_encoder(), ogm_dshow_header(), ogm_header(), oma_read_header(), oma_write_header(), open_audio(), open_output_file(), opus_header(), output_configure(), output_data(), pad_last_frame(), parse_ffconfig(), parse_mpeg1waveformatex(), parse_strk(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), pcm_decode_frame(), pcm_decode_init(), pcm_encode_frame(), pcm_encode_init(), pcm_read_header(), pcm_read_packet(), pmp_header(), pop_output_configuration(), print_enc_params(), psy_3gpp_init(), psy_3gpp_window(), pulse_read_header(), qcelp_decode_init(), qcp_read_header(), qdm2_decode_init(), r3d_read_red1(), ra144_decode_init(), ra144_encode_init(), ra288_decode_init(), read_and_decode_spectrum(), read_channel_data(), read_desc_chunk(), read_frame_data(), read_header(), read_packet(), read_restart_header(), read_specific_config(), revert_channel_correlation(), rl2_read_header(), rm_read_audio_stream_info(), roq_dpcm_encode_frame(), roq_dpcm_encode_init(), roq_read_packet(), rso_read_header(), rso_write_header(), rtp_write_packet(), rv10_write_header(), s302m_decode_frame(), s302m_parse_frame_header(), search_for_quantizers_twoloop(), seq_read_header(), show_stream(), sipr_decoder_init(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), smka_decode_frame(), smka_decode_init(), sol_read_header(), sox_read_header(), sox_write_header(), speex_header(), str_read_packet(), stream_component_open(), stream_cycle_channel(), swf_write_header(), tak_decode_frame(), tak_read_header(), thp_read_header(), tmv_read_header(), transcode_init(), truespeech_decode_init(), tta_decode_init(), tta_read_header(), twin_decode_init(), validate_options(), vid_read_packet(), vmd_read_header(), vmdaudio_decode_frame(), vmdaudio_decode_init(), voc_write_packet(), vorbis_decode_init(), vorbis_encode_init(), vorbis_header(), vorbis_parse_setup_hdr_residues(), vqf_read_header(), wavpack_decode_block(), wavpack_decode_init(), wc3_read_header(), wma_decode_block(), wma_decode_frame(), wmavoice_decode_init(), write_audio_frame(), write_frame(), write_manifest(), write_streamheader(), ws_snd_decode_init(), wsaud_read_header(), wsaud_read_packet(), wsvqa_read_packet(), wv_read_header(), wv_unpack_mono(), wv_unpack_stereo(), xa_read_header(), xa_read_packet(), xmv_read_header(), xwma_read_header(), and yop_read_header().

enum AVChromaLocation AVCodecContext::chroma_sample_location

This defines the location of chroma samples.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2085 of file avcodec.h.

Referenced by decode_init(), decode_vui_parameters(), ff_dvvideo_init(), ff_h263_decode_init(), ff_h264_decode_init(), ff_mjpeg_decode_init(), mpeg_decode_init(), transcode_init(), update_context_from_thread(), vp3_decode_init(), and yuv4_read_header().

int AVCodecContext::chromaoffset

chroma qp offset from luma

  • encoding: Set by user.
  • decoding: unused

Definition at line 2028 of file avcodec.h.

Referenced by X264_init(), and XAVS_init().

struct AVCodec* AVCodecContext::codec
Examples:
libavformat/output-example.c.

Definition at line 1347 of file avcodec.h.

Referenced by a64_write_header(), a64multi_init_encoder(), adpcm_compress_trellis(), adpcm_decode_frame(), adpcm_decode_init(), adpcm_encode_init(), apply_param_change(), audio_decode_frame(), avcodec_close(), avcodec_copy_context(), avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), avcodec_encode_audio2(), avcodec_encode_subtitle(), avcodec_encode_video2(), avcodec_flush_buffers(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), avformat_find_stream_info(), close_connection(), codec_child_next(), common_init(), context_to_name(), decode_chunks(), decode_end(), decode_frame(), decode_init(), decode_nal_units(), decode_thread(), decode_video(), do_video_out(), dpcm_decode_frame(), dpcm_decode_init(), eightsvx_decode_init(), encode_init(), execute_decode_slices(), ff_draw_horiz_band(), ff_er_frame_end(), ff_h263_decode_frame(), ff_h263_decode_init(), ff_mjpeg_decode_init(), ff_MPV_encode_init(), ff_MPV_frame_end(), ff_thread_flush(), ff_thread_get_buffer(), ff_thread_init(), ff_vdpau_mpeg4_decode_picture(), ff_vp56_init(), ff_wma_init(), ffv1_close(), field_end(), flush_encoders(), frame_thread_free(), frame_thread_init(), frame_worker_thread(), get_nb_samples(), get_pixel_format(), h261_decode_init(), h264_set_parameter_from_sps(), h264_slice_header_init(), mov_write_video_tag(), mpeg_decode_init(), mpeg_get_pixelformat(), open_audio(), pcm_decode_frame(), pcm_decode_init(), pcm_encode_frame(), pcm_encode_init(), show_stream(), submit_packet(), svq3_decode_init(), try_decode_frame(), update_context_from_thread(), vaapi_mpeg4_decode_slice(), vaapi_mpeg4_start_frame(), validate_thread_parameters(), vc1_decode_frame(), vc1_decode_init(), vcr2_init_sequence(), vp56_add_predictors_dc(), vp56_decode_4mv(), vp6_decode_init(), wav_write_header(), wma_decode_init(), and write_frame().

enum AVCodecID AVCodecContext::codec_id
Examples:
libavformat/output-example.c.

Definition at line 1349 of file avcodec.h.

Referenced by add_av_stream(), add_input_streams(), add_video_stream(), adts_aac_read_header(), adx_read_header(), aea_read_header(), aiff_write_header(), amf_parse_object(), amr_decode_fix_avctx(), amr_handle_packet(), amr_read_header(), amr_read_packet(), apc_read_header(), ape_read_header(), ape_tag_read_field(), asf_read_picture(), asf_read_stream_properties(), asf_write_header1(), audio_read_header(), audio_write_header(), av_find_best_stream(), av_get_audio_frame_duration(), avcodec_align_dimensions2(), avcodec_open2(), avcodec_string(), avformat_find_stream_info(), avi_read_header(), avi_write_header(), avi_write_trailer(), avisynth_read_header(), avpriv_dv_init_demux(), avpriv_mpa_decode_header(), avs_read_packet(), avserver_opt_preset(), bfi_read_header(), bmv_read_header(), cdata_read_header(), cdxl_read_packet(), celt_header(), choose_decoder(), choose_encoder(), cin_read_header(), commit_bitstream_and_slice_buffer(), compute_pkt_fields(), compute_status(), create_audio_stream(), cyuv_decode_frame(), daud_header(), dc1394_read_common(), decode_end(), decode_frame(), decode_init(), decode_mb(), decode_slice(), decode_stream_header(), dfa_read_header(), dirac_header(), do_streamcopy(), do_subtitle_out(), dsputil_init_3dnow(), dsputil_init_mmxext(), dv_extract_audio_info(), dv_init_mux(), dxa_read_header(), ea_read_header(), eightsvx_decode_frame(), encode_frame(), encode_init(), encode_mb(), estimate_best_b_count(), extract_mpeg4_header(), fbdev_read_header(), ff_aac_ac3_parse(), ff_ac3_encode_init(), ff_asf_parse_packet(), ff_audio_interleave_init(), ff_dsputil_init_pix_mmx(), ff_er_frame_end(), ff_h264_decode_init(), ff_id3v2_parse_apic(), ff_id3v2_write_apic(), ff_init_me(), ff_ivi_decode_close(), ff_ivi_decode_frame(), ff_mjpeg_encode_picture_header(), ff_mjpeg_find_marker(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_mp4_read_dec_config_descr(), ff_MPV_encode_init(), ff_parse_mpeg2_descriptor(), ff_pcm_read_seek(), ff_pnm_decode_header(), ff_psy_init(), ff_raw_audio_read_header(), ff_raw_video_read_header(), ff_read_packet(), ff_rm_parse_packet(), ff_rm_read_mdpr_codecdata(), ff_rtp_get_codec_info(), ff_rtp_get_payload_type(), ff_rtp_parse_open(), ff_rv34_decode_init(), ff_vc1_decode_end(), ff_vc1_decode_init_alloc_tables(), ff_vc1_parse_frame_header(), ff_voc_get_packet(), ffm_read_header(), ffm_write_header(), film_read_header(), find_expected_header(), find_stream_in_feed(), flac_header(), flac_read_header(), flv_data_packet(), flv_read_packet(), flv_same_audio_codec(), flv_same_video_codec(), flv_set_audio_codec(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), flv_write_trailer(), g722_read_header(), g723_1_init(), get_aiff_header(), get_attachment(), get_audio_flags(), get_bit_rate(), get_codec_data(), get_packet_header(), get_private_data(), get_sindex(), get_video_private_data(), grab_read_header(), gsm_decode_frame(), gsm_init(), gsm_parse(), gsm_read_header(), guess_mv(), gxf_packet(), gxf_write_header(), gxf_write_media_preamble(), gxf_write_packet(), gxf_write_umf_media_description(), gxf_write_umf_media_mpeg(), handle_file(), has_codec_parameters(), has_decode_delay_been_guessed(), idcin_read_header(), iff_read_header(), ilbc_read_header(), ilbc_write_header(), imc_decode_block(), imc_decode_init(), img_read_header(), img_read_packet(), imx_dump_header(), init_input_stream(), init_muxer(), ipmovie_read_header(), ipod_get_codec_tag(), is_intra_more_likely(), ism_write_header(), iss_read_header(), ivf_write_header(), libgsm_decode_init(), libgsm_encode_frame(), libgsm_encode_init(), libgsm_flush(), lmlm4_read_header(), lxf_read_header(), lxf_read_packet(), m4sl_cb(), mace_decode_frame(), matroska_parse_block(), matroska_parse_frame(), matroska_parse_rm_audio(), matroska_read_header(), mjpega_dump_header(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mkv_write_packet_internal(), mkv_write_tracks(), mmf_read_header(), mov_find_codec_tag(), mov_get_codec_tag(), mov_read_covr(), mov_read_enda(), mov_read_hdlr(), mov_read_trak(), mov_read_wave(), mov_write_audio_tag(), mov_write_chan_tag(), mov_write_esds_tag(), mov_write_ftyp_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mov_write_video_tag(), mov_write_wave_tag(), movie_init(), mp3_read_header(), mp4_get_codec_tag(), mpc8_read_header(), mpc_read_header(), mpeg1_decode_sequence(), mpeg_decode_postinit(), mpeg_decode_sequence_extension(), mpeg_get_pixelformat(), mpeg_mux_init(), mpegps_read_packet(), mpegts_find_stream_type(), mpegts_push_data(), mpegts_read_header(), mpegts_set_stream_info(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pes(), mpegts_write_pmt(), mpegvideo_extract_headers(), msnwc_tcp_read_header(), mtv_read_header(), mxf_handle_small_eubc(), mxf_parse_structural_metadata(), mxf_write_d10_audio_packet(), mxf_write_generic_sound_common(), mxf_write_header(), mxf_write_packet(), mxg_read_header(), nc_read_header(), nsv_parse_NSVs_header(), nsv_read_chunk(), nuv_header(), ogg_buffer_data(), ogg_write_header(), ogg_write_packet(), ogg_write_trailer(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_header(), open_input_file(), opus_header(), parse(), parse_ffconfig(), parse_fmtp(), parse_media_type(), parse_mpeg1waveformatex(), parse_picture(), parse_strk(), parse_vtrk(), pcm_decode_frame(), pcm_read_header(), pcm_read_packet(), pmp_header(), probe_codec(), pulse_read_header(), put_xiph_codecpriv(), pva_read_header(), qcp_read_header(), qdm2_parse_packet(), r3d_read_red1(), rawvideo_read_header(), rdt_parse_packet(), read_access_unit(), read_desc_chunk(), read_frame(), read_frame_internal(), read_header(), read_kuki_chunk(), read_major_sync(), read_matrix_params(), read_restart_header(), remove_extradata(), rl2_read_header(), rm_ac3_swap_bytes(), rm_read_audio_stream_info(), rm_write_audio(), roq_read_packet(), rpl_read_header(), rso_read_header(), rso_read_packet(), rso_write_header(), rtp_parse_packet_internal(), rtp_write_header(), rtp_write_packet(), rv10_decode_init(), rv10_write_header(), rv34_parse(), sdp_parse_fmtp_config_h264(), seq_read_header(), set_codec_from_probe_data(), setup_find_stream_info_opts(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), sol_read_header(), sox_read_header(), sox_write_header(), sox_write_trailer(), sp5x_decode_frame(), spdif_read_packet(), spdif_write_header(), speex_header(), srt_read_header(), str_read_packet(), stream_component_open(), svq3_parse_packet(), swf_read_packet(), swf_write_header(), swf_write_video(), tak_read_header(), tb_unreliable(), theora_header(), thp_read_header(), tmv_read_header(), transcode_init(), try_decode_frame(), tta_read_header(), txd_read_header(), v4l2_read_header(), vaapi_vc1_decode_slice(), validate_codec_tag(), vc1_decode_frame(), vc1_decode_init(), vc1t_read_header(), vc1test_write_header(), vcr2_init_sequence(), vfw_read_header(), vid_read_packet(), vmd_read_header(), vorbis_header(), vqf_read_header(), wc3_read_header(), write_header(), write_packet(), write_streamheader(), wsaud_read_header(), wsaud_read_packet(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), x11grab_read_header(), xa_read_header(), xmv_read_header(), xvid_encode_init(), xwma_read_header(), yop_read_header(), and yuv4_read_header().

char AVCodecContext::codec_name[32]
unsigned int AVCodecContext::codec_tag

fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').

This is used to work around some encoder bugs. A demuxer should set this to what is stored in the field used to identify the codec. If there are multiple such fields in a container then the demuxer should choose the one which maximizes the information about the used codec. If the codec tag field in a container is larger than 32 bits then the demuxer should remap the longer ID to 32 bits with a table or other structure. Alternatively a new extra_codec_tag + size could be added but for this a clear advantage must be demonstrated first.

  • encoding: Set by user, if not then the default based on codec_id will be used.
  • decoding: Set by user, will be converted to uppercase by libavcodec during init.

Definition at line 1364 of file avcodec.h.

Referenced by a64multi_init_encoder(), aiff_write_header(), amr_read_header(), ape_read_header(), asf_read_stream_properties(), asf_write_header1(), av_get_audio_frame_duration(), avcodec_string(), avi_read_header(), avi_write_header(), avisynth_read_header(), cdata_read_header(), cdxl_read_packet(), cin_read_header(), daud_header(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), decode_init(), decode_stream_header(), dpcm_decode_frame(), dpcm_decode_init(), ea_read_header(), encode_init(), ff_mjpeg_decode_sos(), ff_mov_init_hinting(), ff_mov_read_stsd_entries(), ff_MPV_common_init(), ff_parse_mpeg2_descriptor(), ff_rm_read_mdpr_codecdata(), ffm_read_header(), ffm_write_header(), film_read_header(), flv_same_audio_codec(), flv_same_video_codec(), flv_set_audio_codec(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), get_aiff_header(), get_audio_flags(), get_codec_data(), handle_file(), idcin_read_header(), iff_read_header(), init_muxer(), ipmovie_read_header(), ipod_get_codec_tag(), ivf_write_header(), lxf_read_header(), matroska_read_header(), mkv_write_codecprivate(), mov_get_codec_tag(), mov_get_rawvideo_codec_tag(), mov_write_hdlr_tag(), mov_write_ms_tag(), mov_write_stbl_tag(), mov_write_stsd_tag(), mp4_get_codec_tag(), mpeg_decode_frame(), mpegts_set_stream_info(), msnwc_tcp_read_header(), new_output_stream(), nsv_parse_NSVs_header(), ogm_header(), oma_read_header(), oma_write_header(), parse_ffconfig(), parse_strk(), pmt_cb(), raw_decode(), raw_encode(), raw_init_decoder(), raw_init_encoder(), read_desc_chunk(), read_header(), rl2_read_header(), rm_read_audio_stream_info(), roq_read_packet(), rpl_read_header(), rpl_read_packet(), rso_read_header(), rso_write_header(), rv10_write_header(), seq_read_header(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smjpeg_read_header(), sol_read_header(), str_read_packet(), thp_read_header(), transcode_init(), utvideo_encode_init(), v4l2_read_header(), validate_codec_tag(), vc1_decode_init(), vmd_read_header(), voc_write_packet(), vp3_decode_init(), wav_write_header(), wav_write_trailer(), wc3_read_header(), write_streamheader(), wsvqa_read_header(), xmv_read_header(), xsub_encoder_init(), xvid_encode_init(), and xwma_read_header().

enum AVMediaType AVCodecContext::codec_type

Definition at line 1346 of file avcodec.h.

Referenced by add_av_stream(), add_codec(), add_dstream(), add_input_streams(), adts_aac_read_header(), adx_read_header(), aea_read_header(), amr_read_header(), apc_read_header(), ape_read_header(), ape_tag_read_field(), asf_read_header(), asf_read_picture(), asf_read_stream_properties(), asf_write_header1(), asf_write_packet(), audio_read_header(), av_find_best_stream(), av_find_default_stream_index(), av_interleaved_write_frame(), avcodec_default_free_buffers(), avcodec_default_get_buffer(), avcodec_default_reget_buffer(), avcodec_default_release_buffer(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), avformat_find_stream_info(), avi_read_header(), avi_sync(), avi_write_counters(), avi_write_header(), avi_write_idx1(), avi_write_ix(), avi_write_packet(), avi_write_trailer(), avisynth_read_header(), avpriv_dv_init_demux(), avs_read_packet(), bfi_read_header(), bmv_read_header(), build_feed_streams(), build_frame_code(), cdata_read_header(), cdxl_read_packet(), celt_header(), check_stream_specifier(), choose_decoder(), choose_encoder(), cin_read_header(), compute_bandwidth(), compute_pkt_fields(), compute_pkt_fields2(), compute_status(), create_audio_stream(), create_stream(), daud_header(), dc1394_read_common(), decode_stream_header(), dfa_read_header(), dirac_header(), do_streamcopy(), do_video_stats(), dump_stream_format(), dv_assemble_frame(), dv_extract_audio_info(), dv_init_mux(), dxa_read_header(), ea_read_header(), fbdev_read_header(), ff_asf_parse_packet(), ff_audio_interleave_close(), ff_audio_interleave_init(), ff_audio_rechunk_interleave(), ff_compute_frame_duration(), ff_get_buffer(), ff_id3v2_parse_apic(), ff_mov_init_hinting(), ff_mov_read_stsd_entries(), ff_raw_audio_read_header(), ff_raw_video_read_header(), ff_read_packet(), ff_rm_parse_packet(), ff_rm_read_mdpr_codecdata(), ff_rtp_get_codec_info(), ff_rtp_get_payload_type(), ffm_read_header(), ffm_write_header(), film_read_header(), flac_header(), flac_read_header(), flush_encoders(), flv_data_packet(), flv_read_metabody(), flv_read_packet(), flv_write_header(), flv_write_packet(), flv_write_trailer(), g722_read_header(), g723_1_init(), get_aiff_header(), get_attachment(), get_bit_rate(), get_input_stream(), get_sindex(), gif_write_header(), gif_write_packet(), grab_read_header(), gsm_read_header(), gxf_compare_field_nb(), gxf_interleave_packet(), gxf_write_header(), gxf_write_media_preamble(), gxf_write_packet(), handle_file(), has_codec_parameters(), hls_write_header(), hls_write_packet(), http_prepare_data(), idcin_read_header(), iff_read_header(), ilbc_read_header(), img_read_header(), init_input_filter(), init_muxer(), init_pts(), ipmovie_read_header(), ipod_get_codec_tag(), ism_write_header(), ism_write_packet(), iss_read_header(), ivf_write_header(), lmlm4_read_header(), lxf_read_header(), m4sl_cb(), matroska_read_header(), mkv_write_attachments(), mkv_write_codecprivate(), mkv_write_packet(), mkv_write_packet_internal(), mkv_write_tracks(), mmf_read_header(), mov_build_index(), mov_create_chapter_track(), mov_get_codec_tag(), mov_read_covr(), mov_read_hdlr(), mov_read_trak(), mov_read_trun(), mov_write_audio_tag(), mov_write_esds_tag(), mov_write_ftyp_tag(), mov_write_hdlr_tag(), mov_write_header(), mov_write_iods_tag(), mov_write_isml_manifest(), mov_write_minf_tag(), mov_write_packet(), mov_write_stbl_tag(), mov_write_stsd_tag(), mov_write_stts_tag(), mov_write_tfhd_tag(), mov_write_tkhd_tag(), mov_write_trak_tag(), mp3_read_header(), mp4_get_codec_tag(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpeg_mux_write_packet(), mpegps_read_packet(), mpegts_find_stream_type(), mpegts_read_header(), mpegts_set_stream_info(), mpegts_write_header(), mpegts_write_packet_internal(), mpegts_write_pes(), mpegts_write_pmt(), msnwc_tcp_read_header(), mtv_read_header(), mxf_handle_small_eubc(), mxf_parse_structural_metadata(), mxf_read_packet(), mxf_read_packet_old(), mxf_write_common_fields(), mxf_write_header(), mxf_write_packet(), mxg_read_header(), nc_read_header(), new_audio_stream(), new_output_stream(), new_stream(), new_subtitle_stream(), nsv_parse_NSVs_header(), nuv_header(), ogg_read_seek(), ogg_write_header(), ogm_dshow_header(), ogm_header(), old_dirac_header(), old_flac_header(), oma_read_header(), open_input_stream(), open_output_file(), opt_target(), opus_header(), output_packet(), parse_ffconfig(), parse_packet(), parse_picture(), parse_strk(), parse_vtrk(), pcm_read_header(), pmp_header(), pmt_cb(), print_report(), pulse_read_header(), pva_read_header(), qcp_read_header(), qt_rtp_parse_packet(), r3d_read_red1(), rawvideo_read_header(), read_desc_chunk(), read_frame(), read_header(), read_packet(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_dts(), rm_read_header(), rm_write_header(), rm_write_packet(), roq_read_packet(), rpl_read_header(), rpl_read_packet(), rso_read_header(), rtp_write_header(), rv10_write_header(), seg_write_header(), seg_write_packet(), seq_read_header(), set_codec_from_probe_data(), show_packet(), show_stream(), siff_parse_vbv1(), skeleton_header(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), smjpeg_write_packet(), sol_read_header(), sox_read_header(), spdif_read_packet(), speex_header(), srt_read_header(), str_read_packet(), stream_component_close(), stream_component_open(), stream_cycle_channel(), swf_read_packet(), swf_write_header(), swf_write_packet(), swf_write_trailer(), tak_read_header(), theora_header(), thp_read_header(), tmv_read_header(), transcode_init(), try_decode_frame(), tta_read_header(), txd_read_header(), update_initial_durations(), v4l2_read_header(), vc1t_read_header(), vfw_read_header(), vid_read_packet(), vmd_read_header(), voc_read_header(), voc_write_header(), vorbis_header(), vqf_read_header(), wc3_read_header(), write_frame(), write_manifest(), write_streamheader(), wsaud_read_header(), wsvqa_read_header(), wsvqa_read_packet(), wv_read_header(), x11grab_read_header(), xa_read_header(), xmv_read_header(), yop_read_header(), and yuv4_read_header().

AVFrame* AVCodecContext::coded_frame

the picture in the bitstream

  • encoding: Set by libavcodec.
  • decoding: Set by libavcodec.
Examples:
libavformat/output-example.c.

Definition at line 2724 of file avcodec.h.

Referenced by a64multi_init_encoder(), aac_decode_init(), aac_encode_close(), aac_encode_end(), aac_encode_init(), ac3_decode_init(), adpcm_decode_init(), adpcm_encode_close(), adpcm_encode_init(), adx_decode_init(), adx_encode_init(), alac_decode_init(), alac_encode_close(), alac_encode_init(), alloc_buffers(), amr_wb_encode_close(), amr_wb_encode_init(), amrnb_decode_init(), amrwb_decode_init(), ape_decode_init(), atrac1_decode_init(), atrac3_decode_init(), avcodec_close(), bmp_decode_init(), bmp_encode_init(), bmv_aud_decode_init(), cinaudio_decode_init(), cllc_decode_close(), cllc_decode_frame(), cllc_decode_init(), cng_decode_init(), common_init(), cook_decode_init(), dca_decode_init(), decode_close(), decode_frame(), decode_init(), decode_init_thread_copy(), decode_slice(), dnxhd_decode_init(), dnxhd_encode_init(), do_video_out(), do_video_stats(), dpcm_decode_init(), eightsvx_decode_init(), encode_close(), encode_end(), encode_frame(), encode_init(), encode_init_ls(), Faac_encode_close(), Faac_encode_init(), ff_ac3_encode_close(), ff_ac3_encode_init(), ff_asv_common_init(), ff_dvvideo_init(), ff_MPV_common_init(), ff_MPV_frame_end(), ff_pnm_init(), ffv1_encode_init(), find_quant_thread(), flac_decode_init(), flac_encode_close(), flac_encode_init(), flashsv_encode_frame(), g722_decode_init(), g722_encode_close(), g722_encode_init(), g723_1_decode_init(), gif_decode_init(), gif_encode_init(), gsm_init(), ilbc_decode_init(), ilbc_encode_close(), ilbc_encode_init(), imc_decode_init(), libgsm_decode_init(), libgsm_encode_close(), libgsm_encode_init(), libopenjpeg_decode_init(), libopenjpeg_decode_init_thread_copy(), libopenjpeg_encode_close(), libopenjpeg_encode_init(), libopus_decode_init(), libschroedinger_encode_frame(), libschroedinger_encode_init(), libspeex_decode_init(), mace_decode_init(), mdec_common_init(), mlp_decode_init(), mp3lame_encode_close(), mp3lame_encode_init(), MPA_encode_close(), MPA_encode_init(), mpc7_decode_init(), mpc8_decode_init(), mss1_decode_init(), mss2_decode_init(), mss3_decode_init(), mss4_decode_init(), oggvorbis_encode_close(), oggvorbis_encode_init(), pcm_bluray_decode_init(), pcm_decode_init(), pcm_encode_close(), pcm_encode_init(), pcx_encode_init(), pcx_init(), png_enc_init(), print_report(), ptx_init(), qcelp_decode_init(), qdm2_decode_init(), qtrle_encode_init(), ra144_decode_init(), ra144_encode_close(), ra144_encode_init(), ra288_decode_init(), raw_decode(), raw_init_decoder(), raw_init_encoder(), roq_dpcm_encode_close(), roq_dpcm_encode_init(), roq_encode_video(), s302m_decode_init(), sgi_init(), shorten_decode_init(), sipr_decoder_init(), smka_decode_init(), sunrast_encode_init(), sunrast_init(), svq1_encode_init(), tak_decode_init(), targa_encode_init(), targa_init(), tiff_init(), truespeech_decode_init(), tscc2_decode_init(), tta_decode_init(), twin_decode_init(), txd_init(), ulti_decode_init(), update_context_from_thread(), utvideo_encode_close(), utvideo_encode_frame(), utvideo_encode_init(), v410_decode_close(), v410_decode_frame(), v410_decode_init(), v410_encode_close(), v410_encode_frame(), v410_encode_init(), v4l2_read_packet(), vble_decode_close(), vble_decode_frame(), vble_decode_init(), vble_restore_plane(), vcr1_common_init(), vmdaudio_decode_init(), vorbis_decode_init(), vorbis_encode_close(), vorbis_encode_init(), vp8_encode(), vp8_free(), vp8_init(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), write_video_frame(), ws_snd_decode_init(), X264_init(), XAVS_init(), xbm_encode_close(), xbm_encode_init(), xvid_encode_init(), xwd_decode_close(), xwd_decode_frame(), xwd_decode_init(), xwd_encode_close(), xwd_encode_frame(), xwd_encode_init(), yuv4_read_packet(), zerocodec_decode_close(), zerocodec_decode_frame(), and zerocodec_decode_init().

int AVCodecContext::coder_type
enum AVColorPrimaries AVCodecContext::color_primaries

Chromaticity coordinates of the source primaries.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2057 of file avcodec.h.

Referenced by decode_frame_header(), decode_slice_header(), encode_frame(), encode_init(), libschroedinger_encode_init(), mpeg_decode_sequence_display_extension(), parse_source_parameters(), and update_context_from_thread().

enum AVColorRange AVCodecContext::color_range

MPEG vs JPEG YUV range.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2078 of file avcodec.h.

Referenced by decode_slice_header(), get_pixel_format(), mpeg_decode_init(), parse_source_parameters(), and update_context_from_thread().

enum AVColorTransferCharacteristic AVCodecContext::color_trc

Color Transfer Characteristic.

  • encoding: Set by user
  • decoding: Set by libavcodec

Definition at line 2064 of file avcodec.h.

Referenced by decode_frame_header(), decode_slice_header(), encode_frame(), libschroedinger_encode_init(), mpeg_decode_sequence_display_extension(), parse_source_parameters(), and update_context_from_thread().

enum AVColorSpace AVCodecContext::colorspace
int AVCodecContext::compression_level
int AVCodecContext::context_model

context model

  • encoding: Set by user.
  • decoding: unused

Definition at line 2394 of file avcodec.h.

Referenced by encode_init(), encode_plane(), encode_rgb_frame(), encode_slice_header(), ffv1_encode_init(), and write_header().

int AVCodecContext::cutoff

Audio cutoff bandwidth (0 means "automatic")

  • encoding: Set by user.
  • decoding: unused

Definition at line 2147 of file avcodec.h.

Referenced by aac_encode_init(), Faac_encode_init(), ff_psy_preprocess_init(), libopus_configure_encoder(), libopus_encode_init(), oggvorbis_init_encoder(), psy_3gpp_init(), and validate_options().

float AVCodecContext::dark_masking

darkness masking (0-> disabled)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1691 of file avcodec.h.

Referenced by adaptive_quantization(), ff_MPV_encode_init(), and parse_ffconfig().

int AVCodecContext::dct_algo

DCT algorithm, see FF_DCT_* below.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2647 of file avcodec.h.

Referenced by ff_dsputil_init(), ff_dsputil_init_bfin(), ff_dsputil_init_ppc(), ff_MPV_common_init_altivec(), ff_MPV_encode_init_x86(), ffm_read_header(), ffm_write_header(), and parse_ffconfig().

int AVCodecContext::debug

debug

  • encoding: Set by user.
  • decoding: Set by user.

Definition at line 2567 of file avcodec.h.

Referenced by audio_get_buffer(), avcodec_default_release_buffer(), decode_chunks(), decode_ext_header(), decode_frame(), decode_init(), decode_nal_units(), decode_picture_timing(), decode_slice_header(), decode_unregistered_user_data(), decode_vol_header(), decode_vop_header(), ff_alloc_picture(), ff_er_frame_end(), ff_flv_decode_picture_header(), ff_h263_decode_frame(), ff_h263_show_pict_info(), ff_h264_decode_picture_parameter_set(), ff_h264_decode_seq_parameter_set(), ff_h264_execute_ref_pic_marking(), ff_mjpeg_decode_frame(), ff_mjpeg_decode_sos(), ff_mpeg4_decode_picture_header(), ff_msmpeg4_decode_picture_header(), ff_print_debug_info(), ff_rate_estimate_qscale(), ff_thread_await_progress(), ff_thread_release_buffer(), ff_thread_report_progress(), ff_vbv_update(), ff_wmv2_decode_secondary_picture_header(), ffm_read_header(), ffm_write_header(), ffv1_decode_frame(), find_short(), init_context_frame(), libschroedinger_decode_init(), libschroedinger_encode_init(), mjpeg_decode_app(), mjpeg_decode_com(), mjpegb_decode_frame(), modify_qscale(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg_decode_gop(), mpeg_decode_picture_display_extension(), mpeg_decode_sequence_display_extension(), mpeg_decode_sequence_extension(), mpeg_decode_slice(), MPV_decode_mb_internal(), parse_ffconfig(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), predict_slice(), predict_slice_buffered(), print_long_term(), print_short_term(), remove_short(), rv10_decode_init(), rv20_decode_picture_header(), stream_component_open(), svq3_decode_frame(), transcode_init(), truemotion1_decode_header(), update_context_from_user(), and video_get_buffer().

int AVCodecContext::debug_mv

debug

  • encoding: Set by user.
  • decoding: Set by user.

Definition at line 2591 of file avcodec.h.

Referenced by ff_alloc_picture(), ff_print_debug_info(), init_context_frame(), stream_component_open(), and update_context_from_user().

int AVCodecContext::delay

Codec delay.

Video: Number of frames the decoded output will be delayed relative to the encoded input.

Audio: For encoding, this is the number of "priming" samples added to the beginning of the stream. The decoded output will be delayed by this many samples relative to the input to the encoder. Note that this field is purely informational and does not directly affect the pts output by the encoder, which should always be based on the actual presentation time, including any delay. For decoding, this is the number of samples the decoder needs to output before the decoder's output is valid. When seeking, you should start decoding this many samples prior to your desired seek point.

  • encoding: Set by libavcodec.
  • decoding: Set by libavcodec.

Definition at line 1496 of file avcodec.h.

Referenced by aac_encode_init(), amr_wb_encode_frame(), amr_wb_encode_init(), encode_frame(), encode_init(), encode_superframe(), Faac_encode_init(), ff_ac3_encode_init(), ff_af_queue_init(), ff_MPV_encode_init(), g722_encode_init(), libopus_decode_init(), libopus_encode_init(), libopus_write_header(), mp3lame_encode_init(), MPA_encode_frame(), MPA_encode_init(), ogg_write_packet(), oggvorbis_encode_frame(), and ra144_encode_init().

int AVCodecContext::dia_size

ME diamond size & shape.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1771 of file avcodec.h.

Referenced by estimate_motion_thread(), ff_init_me(), iterative_me(), and svq1_encode_plane().

void(* AVCodecContext::draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height)

If non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw a horizontal band.

It improves cache usage. Not all codecs can do that. You must check the codec capabilities beforehand. When multithreading is used, it may be called from multiple threads at the same time; threads might draw different parts of the same AVFrame, or multiple AVFrames, and there is no guarantee that slices will be drawn in order. The function is also used by hardware acceleration APIs. It is called at least once during frame decoding to pass the data needed for hardware render. In that mode instead of pixel data, AVFrame points to a structure specific to the acceleration API. The application reads the structure and can change some fields to indicate progress or mark state.

  • encoding: unused
  • decoding: Set by user.
    Parameters
    heightthe height of the slice
    ythe y position of the slice
    type1->top field, 2->bottom field, 3->frame
    offsetoffset into the AVFrame.data from which the slice should be read

Definition at line 1566 of file avcodec.h.

Referenced by draw_slice(), ff_draw_horiz_band(), ff_init_block_index(), MPV_decode_mb_internal(), update_context_from_user(), and vp3_draw_horiz_band().

int AVCodecContext::dtg_active_format

DTG active format information (additional aspect ratio information only used in DVB MPEG-2 transport streams) 0 if not set.

  • encoding: unused
  • decoding: Set by decoder.

Definition at line 1816 of file avcodec.h.

Referenced by mpeg_decode_user_data(), and update_context_from_thread().

uint64_t AVCodecContext::error[AV_NUM_DATA_POINTERS]

error

  • encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
  • decoding: unused

Definition at line 2640 of file avcodec.h.

Referenced by encode_frame(), estimate_best_b_count(), ff_MPV_encode_picture(), and print_report().

int AVCodecContext::error_concealment

error concealment flags

  • encoding: unused
  • decoding: Set by user.

Definition at line 2558 of file avcodec.h.

Referenced by ff_er_frame_end(), guess_mv(), and stream_component_open().

int AVCodecContext::error_rate

Simulates errors in the bitstream to test error concealment.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2924 of file avcodec.h.

Referenced by encode_thread().

int(* AVCodecContext::execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)

The codec may call this to execute several independent things.

It will return only after finishing all tasks. The user may replace this with some multithreaded implementation, the default implementation will execute the parts serially.

Parameters
countthe number of things to execute
  • encoding: Set by libavcodec, user can override.
  • decoding: Set by libavcodec, user can override.

Definition at line 2772 of file avcodec.h.

Referenced by avcodec_get_context_defaults3(), decode_chunks(), decode_picture(), dvvideo_decode_frame(), encode_picture(), execute_decode_slices(), ffv1_decode_frame(), ffv1_encode_frame(), and thread_init().

int(* AVCodecContext::execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)

The codec may call this to execute several independent things.

It will return only after finishing all tasks. The user may replace this with some multithreaded implementation, the default implementation will execute the parts serially. Also see avcodec_thread_init and e.g. the –enable-pthread configure option.

Parameters
ccontext passed also to func
countthe number of things to execute
arg2argument passed unchanged to func
retreturn values of executed functions, must have space for "count" values. May be NULL.
funcfunction that will be called count times, with jobnr from 0 to count-1. threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no two instances of func executing at the same time will have the same threadnr.
Returns
always 0 currently, but code should handle a future improvement where when any call to func returns < 0 no further calls to func may be done and < 0 is returned.
  • encoding: Set by libavcodec, user can override.
  • decoding: Set by libavcodec, user can override.

Definition at line 2792 of file avcodec.h.

Referenced by avcodec_get_context_defaults3(), dnxhd_encode_fast(), dnxhd_encode_picture(), dnxhd_encode_rdo(), dnxhd_find_qscale(), encode_frame(), thread_init(), and vp8_decode_frame().

uint8_t* AVCodecContext::extradata

some codecs need / can use extradata like Huffman tables.

mjpeg: Huffman tables rv10: additional flags mpeg4: global headers (they can be in the bitstream or here) The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger than extradata_size to avoid prolems if it is read with the bitstream reader. The bytewise contents of extradata must not depend on the architecture or CPU endianness.

  • encoding: Set/allocated/freed by libavcodec.
  • decoding: Set/allocated/freed by user.

Definition at line 1453 of file avcodec.h.

Referenced by a64_write_header(), a64multi_encode_frame(), a64multi_init_encoder(), aac_adtstoasc_filter(), aac_decode_frame(), aac_decode_init(), aac_encode_close(), aac_encode_init(), add_av_stream1(), adpcm_decode_init(), adpcm_encode_init(), adts_write_header(), adx_decode_init(), adx_read_header(), aiff_read_header(), alac_encode_close(), alac_encode_init(), alac_set_info(), alloc_buffers(), apc_read_header(), ape_decode_init(), ape_read_header(), ape_tag_read_field(), asf_read_stream_properties(), asfrtp_parse_sdp_line(), ass_decode_init(), ass_encode_init(), atrac3_decode_init(), av_mpeg4_decode_header(), av_parser_change(), avcodec_close(), avcodec_copy_context(), avformat_find_stream_info(), avformat_free_context(), avi_read_header(), avpriv_flac_is_extradata_valid(), avpriv_vorbis_parse_extradata(), bfi_decode_frame(), bfi_read_header(), celt_header(), concatenate_packet(), cook_decode_init(), cook_parse(), decode_audio_specific_config(), decode_ext_header(), decode_header_trees(), decode_init(), decode_init_thread_copy(), decode_stream_header(), dump_attachment(), dump_extradata(), dvbsub_init_decoder(), encode_close(), encode_end(), encode_ext_header(), encode_init(), extract_mpeg4_header(), Faac_encode_close(), Faac_encode_init(), ff_cmap_read_palette(), ff_h263_decode_frame(), ff_h264_decode_extradata(), ff_h264_decode_init(), ff_mjpeg_decode_init(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_mp4_read_dec_config_descr(), ff_MPV_encode_end(), ff_mss12_decode_init(), ff_parse_mpeg2_descriptor(), ff_rm_read_mdpr_codecdata(), ffm_read_header(), ffm_write_header(), ffv1_decode_init(), flac_decode_init(), flac_encode_close(), flac_encode_frame(), flac_encode_init(), flac_header(), flac_read_header(), flic_decode_init(), flv_get_extradata(), flv_read_packet(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), get_aac_sample_rates(), get_attachment(), get_codec_data(), get_private_data(), get_video_private_data(), h264_mp4toannexb_filter(), idcin_decode_init(), idcin_read_header(), iff_read_header(), latm_decode_audio_specific_config(), latm_decode_frame(), latm_write_frame_header(), latm_write_header(), libopus_decode_init(), libopus_encode_close(), libopus_encode_init(), libopus_write_header(), libspeex_decode_init(), matroska_read_header(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mov_read_dvc1(), mov_read_extradata(), mov_read_glbl(), mov_read_smi(), mov_read_strf(), mov_read_wave(), mov_write_extradata_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_subtitle_tag(), mp3_header_compress(), mp3_header_decompress(), mp_decode_frame(), mpc7_decode_init(), mpc8_decode_init(), mpc8_read_header(), mpc_read_header(), mpeg_decode_frame(), mpegts_write_pmt(), mtv_read_header(), mxf_parse_structural_metadata(), new_stream(), ogg_build_opus_headers(), ogg_build_speex_headers(), ogg_write_header(), oggvorbis_encode_close(), oggvorbis_encode_init(), oma_read_header(), oma_write_header(), open_output_file(), opus_header(), parse_fmtp_config(), parse_media_type(), parse_mpeg1waveformatex(), parse_packed_headers(), parse_vtrk(), put_audio_specific_config(), put_xiph_codecpriv(), qdm2_decode_init(), qdm2_parse_config(), raw_init_decoder(), read_audio_mux_element(), read_extra_header(), read_gab2_sub(), read_header(), read_kuki_chunk(), read_specific_config(), rl2_decode_init(), rl2_read_header(), rm_read_extradata(), rv10_decode_init(), rv20_decode_picture_header(), rv30_decode_init(), rv30_parse_slice_header(), sdp_parse_fmtp_config_h264(), smacker_read_header(), speex_header(), svq3_decode_init(), svq3_parse_packet(), tak_read_header(), theora_header(), transcode(), transcode_init(), tta_decode_init(), tta_read_header(), twin_decode_init(), utvideo_encode_init(), vc1_decode_init(), vc1t_read_header(), vc1test_write_header(), vfw_read_header(), vmdvideo_decode_init(), vorbis_decode_init(), vorbis_encode_close(), vorbis_encode_init(), vorbis_header(), vp6_parse_header(), vqa_decode_init(), vqf_read_header(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), wmv2_encode_init(), write_extradata(), write_header(), write_packet(), write_streamheader(), write_trailer(), wsvqa_read_header(), wsvqa_read_packet(), X264_close(), X264_init(), XAVS_close(), XAVS_init(), xmv_process_packet_header(), xvid_encode_close(), xvid_encode_init(), xvid_strip_vol_header(), xwma_read_header(), yop_decode_init(), and yop_read_header().

int AVCodecContext::extradata_size

Definition at line 1454 of file avcodec.h.

Referenced by a64multi_init_encoder(), aac_adtstoasc_filter(), aac_decode_frame(), aac_decode_init(), aac_encode_init(), add_av_stream1(), adpcm_decode_init(), adpcm_encode_init(), adts_write_header(), adx_decode_init(), adx_read_header(), aiff_read_header(), alac_decode_init(), alac_encode_close(), alac_encode_init(), alac_set_info(), apc_read_header(), ape_decode_init(), ape_read_header(), ape_tag_read_field(), asf_read_stream_properties(), asf_write_header1(), asfrtp_parse_sdp_line(), ass_decode_init(), ass_encode_init(), atrac3_decode_init(), av_mpeg4_decode_header(), av_parser_change(), avcodec_copy_context(), avcodec_open2(), avformat_find_stream_info(), avi_read_header(), avpriv_flac_is_extradata_valid(), avpriv_vorbis_parse_extradata(), bfi_decode_frame(), bfi_read_header(), celt_header(), concatenate_packet(), cook_decode_init(), cook_parse(), decode_audio_specific_config(), decode_ext_header(), decode_header_trees(), decode_init(), decode_init_thread_copy(), decode_stream_header(), dump_attachment(), dump_extradata(), dvbsub_init_decoder(), encode_close(), encode_ext_header(), encode_init(), extract_mpeg4_header(), Faac_encode_init(), ff_cmap_read_palette(), ff_h263_decode_frame(), ff_h264_decode_extradata(), ff_h264_decode_init(), ff_mjpeg_decode_init(), ff_mov_read_stsd_entries(), ff_mov_write_packet(), ff_mp4_read_dec_config_descr(), ff_mss12_decode_init(), ff_parse_mpeg2_descriptor(), ff_rtp_send_aac(), ff_rtp_send_latm(), ffm_read_header(), ffm_write_header(), flac_encode_close(), flac_encode_init(), flac_header(), flac_read_header(), flic_decode_init(), flv_get_extradata(), flv_read_packet(), flv_set_video_codec(), flv_write_header(), flv_write_packet(), get_aac_sample_rates(), get_attachment(), get_codec_data(), get_private_data(), get_video_private_data(), h264_mp4toannexb_filter(), h264_parse(), idcin_decode_init(), idcin_read_header(), iff_read_header(), latm_decode_audio_specific_config(), latm_decode_frame(), latm_decode_init(), latm_write_frame_header(), latm_write_header(), libopus_decode_init(), libopus_encode_init(), libspeex_decode_init(), m4sl_cb(), matroska_read_header(), mkv_write_attachments(), mkv_write_block(), mkv_write_codecprivate(), mov_read_dvc1(), mov_read_extradata(), mov_read_glbl(), mov_read_smi(), mov_read_strf(), mov_read_wave(), mov_write_extradata_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_subtitle_tag(), mp3_header_compress(), mp3_header_decompress(), mpc7_decode_init(), mpc8_decode_init(), mpc8_read_header(), mpc_read_header(), mpeg_decode_frame(), mpegts_write_header(), mpegts_write_pmt(), mtv_read_header(), mxf_parse_structural_metadata(), new_stream(), ogg_build_opus_headers(), ogg_build_speex_headers(), ogg_write_header(), oggvorbis_encode_init(), oma_read_header(), oma_write_header(), open_output_file(), opus_header(), parse_fmtp_config(), parse_media_type(), parse_packed_headers(), parse_vtrk(), put_audio_specific_config(), put_xiph_codecpriv(), qdm2_decode_init(), qdm2_parse_config(), raw_init_decoder(), read_extra_header(), read_header(), read_kuki_chunk(), read_packet(), read_specific_config(), rl2_decode_init(), rl2_read_header(), rm_read_audio_stream_info(), rm_read_extradata(), rv10_decode_init(), rv20_decode_picture_header(), rv30_decode_init(), rv30_parse_slice_header(), sdp_parse_fmtp_config_h264(), smacker_read_header(), speex_header(), svq3_decode_init(), svq3_parse_packet(), tak_read_header(), theora_header(), transcode_init(), tta_decode_init(), tta_read_header(), twin_decode_init(), utvideo_encode_init(), vc1_decode_init(), vc1t_read_header(), vfw_read_header(), vmdvideo_decode_init(), vorbis_decode_init(), vorbis_encode_init(), vorbis_header(), vp6_parse_header(), vqa_decode_init(), vqf_read_header(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), wmv2_encode_init(), write_extradata(), write_header(), write_packet(), write_streamheader(), write_trailer(), wsvqa_read_header(), wsvqa_read_packet(), X264_init(), XAVS_init(), xmv_process_packet_header(), xvid_encode_init(), xvid_strip_vol_header(), xwma_read_header(), yop_decode_init(), and yop_read_header().

enum AVFieldOrder AVCodecContext::field_order

Field order.

  • encoding: set by libavcodec
  • decoding: Set by libavcodec

Definition at line 2100 of file avcodec.h.

Referenced by ff_mjpeg_decode_init(), mov_read_fiel(), mov_write_fiel_tag(), mov_write_video_tag(), and transcode_init().

int AVCodecContext::flags

CODEC_FLAG_*.

  • encoding: Set by user.
  • decoding: Set by user.
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1433 of file avcodec.h.

Referenced by aac_decode_init(), aac_encode_frame(), aac_encode_init(), ac3_decode_init(), add_audio_stream(), add_video_stream(), alloc_buffer(), atrac1_decode_init(), atrac3_decode_init(), av_parser_change(), avcodec_string(), comp_block(), dca_decode_init(), dct_get(), decode_frame(), decode_init(), dnxhd_decode_macroblock(), dnxhd_encode_init(), do_video_out(), do_video_stats(), dsp_init(), dsputil_init_3dnow(), dsputil_init_mmxext(), dsputil_init_sse2(), dv_guess_dct_mode(), encode_frame(), encode_init(), encode_q_branch(), estimate_best_b_count(), Faac_encode_init(), ff_ac3_encode_init(), ff_dnxhd_find_cid(), ff_dsputil_init_pix_mmx(), ff_fmt_convert_init_altivec(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_x86(), ff_h263_decode_frame(), ff_huffyuv_common_init(), ff_MPV_common_init(), ff_MPV_encode_init(), ff_rv34_decode_init(), ff_snow_frame_start(), ff_vp56_init(), ff_wma_init(), ffm_read_header(), ffm_write_header(), ffv1_common_init(), ffv1_encode_frame(), ffv1_encode_init(), flac_write_header(), get_flags(), h261_decode_frame(), idct_put(), imc_decode_init(), init_muxer(), intra_predict(), lame_window_init(), libschroedinger_encode_init(), mjpeg_decode_scan(), mkv_write_header(), mov_write_udta_tag(), mp3lame_encode_init(), mpeg_decode_init(), mxf_write_header(), mxf_write_identification(), new_output_stream(), new_video_stream(), ogg_write_header(), oggvorbis_init_encoder(), parse_ffconfig(), print_report(), ra288_decode_init(), remove_extradata(), render_slice(), rv10_decode_init(), svq1_decode_frame(), svq1_encode_plane(), svq3_decode_init(), tgq_idct_put_mb(), tgq_idct_put_mb_dconly(), tqi_idct_put(), transcode_init(), twin_decode_init(), unpack_dct_coeffs(), update_context_from_user(), validate_thread_parameters(), vble_decode_frame(), vc1_decode_init(), video_decode_example(), video_get_buffer(), vorbis_decode_init(), vorbis_encode_init(), vp3_decode_init(), vp8_decode_frame(), vp8_decode_mb_row_no_filter(), vp8_encode(), vp8_init(), wmv9_init(), X264_init(), XAVS_init(), and xvid_encode_init().

int AVCodecContext::frame_bits

number of bits used for the previously encoded frame

  • encoding: Set by libavcodec.
  • decoding: unused

Definition at line 2494 of file avcodec.h.

Referenced by aac_encode_frame(), encode_frame(), and ff_MPV_encode_picture().

int AVCodecContext::frame_number

Frame counter, set by libavcodec.

  • decoding: total number of frames returned from the decoder so far.
  • encoding: total number of frames passed to the encoder so far.

    Note
    the counter is not incremented if encoding/decoding resulted in an error.

Definition at line 2134 of file avcodec.h.

Referenced by aac_encode_frame(), avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), avcodec_encode_audio2(), avcodec_encode_subtitle(), avcodec_encode_video2(), avcodec_open2(), bfi_decode_frame(), decode_frame(), decode_packet(), do_streamcopy(), encode_frame(), ff_eac3_output_frame_header(), flashsv_encode_frame(), h261_decode_frame(), http_prepare_data(), qtrle_encode_frame(), rv10_decode_frame(), svq1_encode_end(), svq1_encode_frame(), update_context_from_user(), warn_insufficient_frame_quality(), and XAVS_frame().

int AVCodecContext::frame_size

Number of samples per channel in an audio frame.

  • encoding: set by libavcodec in avcodec_open2(). Each submitted frame except the last must contain exactly frame_size samples per channel. May be 0 when the codec has CODEC_CAP_VARIABLE_FRAME_SIZE set, then the frame size is not restricted.
  • decoding: may be set by some decoders to indicate constant frame size
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 2123 of file avcodec.h.

Referenced by aac_decode_frame_int(), aac_encode_frame(), aac_encode_init(), adpcm_encode_init(), adx_encode_init(), alac_encode_init(), amr_wb_encode_init(), audio_encode_example(), avcodec_encode_audio2(), celt_header(), cng_decode_frame(), cng_decode_init(), cng_encode_init(), dprint_compression_options(), encode_frame(), encode_init(), Faac_encode_frame(), Faac_encode_init(), ff_ac3_encode_init(), ff_get_audio_frame_size(), ff_psy_preprocess(), ffm_read_header(), ffm_write_header(), flac_encode_init(), flush_encoders(), g722_encode_init(), gsm_decode_frame(), gsm_init(), ilbc_encode_init(), libgsm_decode_frame(), libgsm_decode_init(), libgsm_encode_init(), libopus_encode_init(), mp3lame_encode_frame(), mp3lame_encode_init(), mp_decode_frame(), MPA_encode_init(), mpegts_write_header(), oggvorbis_encode_init(), open_audio(), output_packet(), pad_last_frame(), pcm_encode_init(), poll_filter(), print_enc_params(), ra144_encode_frame(), ra144_encode_init(), read_major_sync(), rm_write_header(), roq_dpcm_encode_frame(), roq_dpcm_encode_init(), rtp_write_header(), rv10_write_header(), transcode_init(), vorbis_encode_frame(), and vorbis_encode_init().

int AVCodecContext::frame_skip_cmp

frame skip comparison function

  • encoding: Set by user.
  • decoding: unused

Definition at line 2436 of file avcodec.h.

Referenced by add_codec(), ff_MPV_encode_init(), ffm_read_header(), and ffm_write_header().

int AVCodecContext::frame_skip_exp

frame skip exponent

  • encoding: Set by user.
  • decoding: unused

Definition at line 2429 of file avcodec.h.

Referenced by skip_check().

int AVCodecContext::frame_skip_factor

frame skip factor

  • encoding: Set by user.
  • decoding: unused

Definition at line 2422 of file avcodec.h.

Referenced by select_input_picture(), and skip_check().

int AVCodecContext::frame_skip_threshold

frame skip threshold

  • encoding: Set by user.
  • decoding: unused

Definition at line 2415 of file avcodec.h.

Referenced by select_input_picture(), skip_check(), and vp8_init().

int(* AVCodecContext::get_buffer)(struct AVCodecContext *c, AVFrame *pic)

Called at the beginning of each frame to get a buffer for it.

The function will set AVFrame.data[], AVFrame.linesize[]. AVFrame.extended_data[] must also be set, but it should be the same as AVFrame.data[] except for planar audio with more channels than can fit in AVFrame.data[]. In that case, AVFrame.data[] shall still contain as many data pointers as it can hold.

if CODEC_CAP_DR1 is not set then get_buffer() must call avcodec_default_get_buffer() instead of providing buffers allocated by some other means.

AVFrame.data[] should be 32- or 16-byte-aligned unless the CPU doesn't need it. avcodec_default_get_buffer() aligns the output buffer properly, but if get_buffer() is overridden then alignment considerations should be taken into account.

See Also
avcodec_default_get_buffer()

Video:

If pic.reference is set then the frame will be read later by libavcodec. avcodec_align_dimensions2() should be used to find the required width and height, as they normally need to be rounded up to the next multiple of 16.

If frame multithreading is used and thread_safe_callbacks is set, it may be called from a different thread, but not from more than one at once. Does not need to be reentrant.

See Also
release_buffer(), reget_buffer()
avcodec_align_dimensions2()

Audio:

Decoders request a buffer of a particular size by setting AVFrame.nb_samples prior to calling get_buffer(). The decoder may, however, utilize only part of the buffer by setting AVFrame.nb_samples to a smaller value in the output frame.

Decoders cannot use the buffer after returning from avcodec_decode_audio4(), so they will not call release_buffer(), as it is assumed to be released immediately upon return. In some rare cases, a decoder may need to call get_buffer() more than once in a single call to avcodec_decode_audio4(). In that case, when get_buffer() is called again after it has already been called once, the previously acquired buffer is assumed to be released at that time and may not be reused by the decoder.

As a convenience, av_samples_get_buffer_size() and av_samples_fill_arrays() in libavutil may be used by custom get_buffer() functions to find the required data size and to fill data pointers and linesize. In AVFrame.linesize, only linesize[0] may be set for audio since all planes must be the same size.

See Also
av_samples_get_buffer_size(), av_samples_fill_arrays()
  • encoding: unused
  • decoding: Set by libavcodec, user can override.

Definition at line 2247 of file avcodec.h.

Referenced by avcodec_get_context_defaults3(), ff_get_buffer(), ff_thread_get_buffer(), init_input_stream(), submit_packet(), and update_context_from_user().

enum AVPixelFormat(* AVCodecContext::get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)

callback to negotiate the pixelFormat

Parameters
fmtis the list of formats which are supported by the codec, it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. The first is always the native one.
Returns
the chosen format
  • encoding: unused
  • decoding: Set by user, if not set the native format will be chosen.

Definition at line 1579 of file avcodec.h.

Referenced by avcodec_get_context_defaults3(), decode_init(), ff_h263_decode_init(), get_pixel_format(), mpeg_get_pixelformat(), and vc1_decode_init().

int AVCodecContext::global_quality

Global quality for codecs which cannot change it per frame.

This should be proportional to MPEG-1/2/4 qscale.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1419 of file avcodec.h.

Referenced by a64multi_init_encoder(), aac_encode_init(), do_video_out(), encode_init(), Faac_encode_init(), lame_window_init(), libopenjpeg_encode_init(), libschroedinger_encode_init(), mp3lame_encode_init(), new_output_stream(), oggvorbis_init_encoder(), parse_ffconfig(), and vorbis_encode_init().

int AVCodecContext::header_bits

Definition at line 2481 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

int AVCodecContext::height
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1507 of file avcodec.h.

Referenced by a64multi_encode_frame(), aasc_decode_frame(), add_av_stream(), add_codec(), add_input_streams(), add_video_stream(), alloc_buffer(), alloc_picture(), amf_parse_object(), apply_param_change(), asf_read_stream_properties(), asf_write_header1(), aura_decode_frame(), av_mpeg4_decode_header(), avcodec_decode_video2(), avcodec_default_reget_buffer(), avcodec_encode_video2(), avcodec_open2(), avcodec_set_dimensions(), avcodec_string(), avi_read_header(), avi_write_header(), avisynth_read_header(), avpriv_dv_codec_profile(), avs_read_packet(), bethsoftvid_decode_frame(), bfi_decode_frame(), bfi_decode_init(), bfi_read_header(), bink_decode_plane(), binkb_decode_plane(), bitline2chunky(), bitplanar2chunky(), bmp_decode_frame(), bmp_encode_frame(), bmv_read_header(), cdg_decode_init(), cdxl_decode_frame(), cdxl_decode_ham6(), cdxl_decode_ham8(), cdxl_read_packet(), cin_read_header(), cinepak_decode_init(), cinvideo_decode_frame(), cinvideo_decode_init(), cmv_decode_inter(), cmv_decode_intra(), cmv_process_header(), codec_get_buffer(), codec_reinit(), common_init(), compute_status(), configure_input_video_filter(), configure_output_video_filter(), cyuv_decode_init(), dc1394_read_common(), decode_13(), decode_argb_frame(), decode_frame(), decode_frame_byterun1(), decode_frame_header(), decode_frame_ilbm(), decode_header(), decode_i2_frame(), decode_i_frame(), decode_init(), decode_p_block(), decode_p_frame(), decode_picture_header(), decode_rgb24_frame(), decode_seq_header(), decode_sequence_header_adv(), decode_slice_header(), decode_stream_header(), decode_video(), dfa_decode_frame(), dfa_decode_init(), dfa_read_header(), dnxhd_decode_frame(), dnxhd_encode_init(), dnxhd_get_blocks(), dnxhd_mb_var_thread(), dnxhd_write_header(), do_video_stats(), dump_stream_format(), dv_extract_video_info(), dv_write_pack(), dvvideo_init_encoder(), dxa_read_header(), ea_read_header(), encode_frame(), encode_init(), encode_picture_ls(), encode_rgb48_10bit(), encode_slice(), erase_screen(), escape124_decode_init(), estimate_best_b_count(), execute_code(), fbdev_read_header(), ff_asv_common_init(), ff_create_schro_frame(), ff_dnxhd_find_cid(), ff_draw_horiz_band(), ff_dxva2_common_end_frame(), ff_get_buffer(), ff_huffyuv_common_init(), ff_mjpeg_decode_sof(), ff_mov_read_stsd_entries(), ff_mpeg_update_thread_context(), ff_MPV_encode_init(), ff_mss12_decode_init(), ff_pnm_decode_header(), ff_print_debug_info(), ff_rm_read_mdpr_codecdata(), ff_rtp_send_jpeg(), ff_rv34_decode_init(), ff_sauce_read(), ff_snow_alloc_blocks(), ff_snow_common_init_after_header(), ff_snow_frame_start(), ff_vaapi_common_end_frame(), ff_vc1_decode_entry_point(), ff_vc1_decode_sequence_header(), ff_vdpau_h264_picture_complete(), ff_vdpau_mpeg4_decode_picture(), ff_vdpau_mpeg_picture_complete(), ff_vdpau_vc1_decode_picture(), ffm_read_header(), ffm_write_header(), ffv1_common_init(), ffv1_encode_frame(), ffv1_init_slice_contexts(), fill_picture_parameters(), film_read_header(), find_slice_quant(), find_stream_in_feed(), flashsv_decode_frame(), flashsv_encode_init(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), flip(), get_video_format_idx(), gif_encode_frame(), gif_encode_init(), gif_image_write_header(), gif_image_write_image(), gif_write_header(), gif_write_video(), grab_read_header(), gxf_find_lines_index(), gxf_write_header(), gxf_write_mpeg_auxiliary(), halfpel_interpol(), handle_file(), hscroll(), idcin_decode_vlcs(), idcin_read_header(), iff_read_header(), img_read_header(), img_read_packet(), import_format(), init_bundles(), init_image(), init_muxer(), ipmovie_read_header(), ipvideo_decode_frame(), ipvideo_decode_opcodes(), ir2_decode_frame(), ivf_write_header(), lag_decode_frame(), libopenjpeg_copy_packed16(), libopenjpeg_copy_packed8(), libopenjpeg_copy_unpacked16(), libopenjpeg_copy_unpacked8(), libopenjpeg_create_image(), libopenjpeg_encode_frame(), libschroedinger_encode_init(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), matroska_read_header(), mca(), mimic_decode_frame(), mkv_write_tracks(), mm_decode_inter(), mm_decode_intra(), motion_compensation(), mov_get_dv_codec_tag(), mov_read_trak(), mov_write_avid_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_tapt_tag(), mov_write_tkhd_tag(), mov_write_uuidprof_tag(), movie_init(), mp_decode_frame(), mp_decode_frame_helper(), mp_decode_init(), mp_read_changes_map(), mpegvideo_extract_headers(), msrle_decode_8_16_24_32(), msrle_decode_frame(), msrle_decode_pal4(), mss1_decode_frame(), mss2_decode_frame(), mss2_decode_init(), mss3_decode_frame(), mss3_decode_init(), mss4_decode_frame(), msvideo1_decode_16bit(), msvideo1_decode_8bit(), mtv_read_header(), mxf_parse_mpeg2_frame(), mxf_parse_structural_metadata(), mxf_write_cdci_common(), new_video_stream(), nsv_parse_NSVs_header(), nuv_header(), ogm_dshow_header(), ogm_header(), open_output_file(), open_video(), pam_encode_frame(), parse_ffconfig(), parse_h264_sdp_line(), parse_picture(), parse_picture_segment(), parse_presentation_segment(), parse_vtrk(), pcx_decode_frame(), pcx_encode_frame(), pmp_header(), pnm_decode_frame(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), prepare_avpic(), print_report(), ptx_decode_frame(), qtrle_decode_16bpp(), qtrle_decode_1bpp(), qtrle_decode_24bpp(), qtrle_decode_2n4bpp(), qtrle_decode_32bpp(), qtrle_decode_8bpp(), qtrle_decode_frame(), qtrle_encode_frame(), qtrle_encode_init(), queue_picture(), r3d_read_red1(), raw_decode(), raw_encode(), raw_init_decoder(), rawvideo_read_header(), rawvideo_read_packet(), read_frame(), read_header(), read_packet(), read_seek(), rl2_decode_init(), rl2_read_header(), rl2_rle_decode(), roq_decode_frame(), roq_decode_init(), roq_encode_init(), roq_read_packet(), rpl_read_header(), rpza_decode_stream(), rv10_write_header(), seq_read_header(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smc_decode_stream(), smjpeg_write_header(), sp5x_decode_frame(), str_read_packet(), sunrast_decode_frame(), sunrast_encode_init(), sunrast_image_write_header(), sunrast_image_write_image(), svq1_decode_init(), svq1_encode_end(), svq1_encode_init(), svq3_decode_init(), swf_write_header(), swf_write_video(), targa_encode_frame(), tgq_decode_frame(), tgv_decode_frame(), tgv_decode_inter(), theora_header(), thp_read_header(), tiff_decode_tag(), tm2_decode_blocks(), tm2_motion_block(), tmv_decode_frame(), tmv_read_header(), to_meta_with_crop(), tqi_decode_frame(), transcode_init(), truemotion1_decode_16bit(), truemotion1_decode_24bit(), truemotion1_decode_header(), tscc2_decode_init(), txd_decode_frame(), ulti_decode_init(), update_context_from_thread(), update_dimensions(), utvideo_encode_frame(), utvideo_encode_init(), v410_decode_frame(), v410_encode_frame(), v4l2_read_header(), vb_decode_framedata(), vble_decode_frame(), vble_decode_init(), vc1_decode_frame(), vc1_decode_init(), vc1t_read_header(), vc1test_write_header(), vcr1_decode_frame(), vfw_read_header(), video_decode_example(), video_encode_example(), video_get_buffer(), video_open(), video_thread(), vmd_decode(), vp3_decode_init(), vp3_draw_horiz_band(), vp6_parse_header(), vp8_decode(), vp8_init(), wc3_read_header(), write_manifest(), write_packet(), write_streamheader(), write_trailer(), write_video_frame(), wsvqa_read_header(), x11grab_read_header(), X264_init(), xan_decode_chroma(), xan_decode_frame(), xan_decode_frame_type0(), xan_decode_frame_type1(), xan_decode_init(), xan_wc3_copy_pixel_run(), xan_wc3_decode_frame(), XAVS_init(), xbm_encode_frame(), xiph_parse_fmtp_pair(), xmv_read_header(), xvid_encode_frame(), xvid_encode_init(), xwd_decode_frame(), xwd_encode_frame(), yop_decode_frame(), yop_decode_init(), yop_read_header(), yuv4_read_header(), yuv4_read_packet(), zerocodec_decode_frame(), and zmbv_me().

void* AVCodecContext::hwaccel_context

Hardware accelerator context.

For some hardware accelerators, a global context needs to be provided by the user. In that case, this holds display-dependent data Libav cannot instantiate itself. Please refer to the Libav HW accelerator documentation to know how to fill this is. e.g. for VA API, this is a struct vaapi_context.

  • encoding: unused
  • decoding: Set by user

Definition at line 2633 of file avcodec.h.

Referenced by commit_bitstream_and_slice_buffer(), decode_slice(), end_frame(), ff_dxva2_common_end_frame(), ff_vaapi_common_end_frame(), fill_slice_long(), start_frame(), vaapi_mpeg2_decode_slice(), vaapi_mpeg2_start_frame(), vaapi_mpeg4_decode_slice(), vaapi_mpeg4_start_frame(), vaapi_vc1_decode_slice(), and vaapi_vc1_start_frame().

int AVCodecContext::i_count

Definition at line 2484 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

float AVCodecContext::i_quant_factor

qscale factor between P and I-frames If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).

If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).

  • encoding: Set by user.
  • decoding: unused

Definition at line 1649 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), get_qscale(), X264_init(), and XAVS_init().

float AVCodecContext::i_quant_offset

qscale offset between P and I-frames

  • encoding: Set by user.
  • decoding: unused

Definition at line 1656 of file avcodec.h.

Referenced by ffm_read_header(), ffm_write_header(), get_diff_limited_q(), get_qminmax(), and get_qscale().

int AVCodecContext::i_tex_bits

Definition at line 2482 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

int AVCodecContext::ildct_cmp

interlaced DCT comparison function

  • encoding: Set by user.
  • decoding: unused

Definition at line 1748 of file avcodec.h.

Referenced by encode_mb_internal(), ff_dvvideo_init(), and ff_MPV_encode_init().

uint16_t* AVCodecContext::inter_matrix

custom inter quantization matrix

  • encoding: Set by user, can be NULL.
  • decoding: Set by libavcodec.

Definition at line 1898 of file avcodec.h.

Referenced by avcodec_copy_context(), ff_MPV_encode_init(), mpeg1_encode_sequence_header(), mpeg4_encode_vol_header(), new_video_stream(), and xvid_encode_init().

int AVCodecContext::inter_quant_bias

inter quantizer bias

  • encoding: Set by user.
  • decoding: unused

Definition at line 1847 of file avcodec.h.

Referenced by ff_MPV_encode_init().

int AVCodecContext::intra_dc_precision

precision of the intra DC coefficient - 8

  • encoding: Set by user.
  • decoding: unused

Definition at line 1950 of file avcodec.h.

Referenced by ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), and new_video_stream().

uint16_t* AVCodecContext::intra_matrix

custom intra quantization matrix

  • encoding: Set by user, can be NULL.
  • decoding: Set by libavcodec.

Definition at line 1891 of file avcodec.h.

Referenced by avcodec_copy_context(), ff_MPV_encode_init(), mpeg1_encode_sequence_header(), mpeg4_encode_vol_header(), new_video_stream(), and xvid_encode_init().

int AVCodecContext::intra_quant_bias

intra quantizer bias

  • encoding: Set by user.
  • decoding: unused

Definition at line 1839 of file avcodec.h.

Referenced by dnxhd_encode_init(), and ff_MPV_encode_init().

int AVCodecContext::keyint_min

minimum GOP size

  • encoding: Set by user.
  • decoding: unused

Definition at line 2014 of file avcodec.h.

Referenced by encode_init(), ffm_read_header(), ffm_write_header(), vp8_init(), X264_init(), and XAVS_init().

int AVCodecContext::last_predictor_count

amount of previous MV predictors (2a+1 x 2a+1 square)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1778 of file avcodec.h.

Referenced by epzs_motion_search_internal().

int AVCodecContext::lmax

maximum Lagrange multipler

  • encoding: Set by user.
  • decoding: unused

Definition at line 2408 of file avcodec.h.

Referenced by ff_MPV_encode_picture(), and get_qminmax().

int AVCodecContext::lmin

minimum Lagrange multipler

  • encoding: Set by user.
  • decoding: unused

Definition at line 2401 of file avcodec.h.

Referenced by get_qminmax().

int AVCodecContext::log_level_offset

Definition at line 1344 of file avcodec.h.

attribute_deprecated int AVCodecContext::lowres

low resolution decoding, 1-> 1/2 size, 2->1/4 size

  • encoding: unused
  • decoding: Set by user.

Definition at line 2717 of file avcodec.h.

float AVCodecContext::lumi_masking

luminance masking (0-> disabled)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1663 of file avcodec.h.

Referenced by adaptive_quantization(), ff_MPV_encode_init(), parse_ffconfig(), and xvid_encode_init().

int AVCodecContext::max_b_frames

maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 relative to the input.

  • encoding: Set by user.
  • decoding: unused
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1587 of file avcodec.h.

Referenced by add_video_stream(), compute_pkt_fields2(), decode_sequence_header_adv(), estimate_best_b_count(), ff_MPV_encode_init(), ff_vc1_decode_sequence_header(), ff_vc1_parse_frame_header(), ffm_read_header(), ffm_write_header(), vaapi_vc1_start_frame(), vc1_decode_init(), video_encode_example(), wmv9_init(), X264_init(), XAVS_frame(), XAVS_init(), and xvid_encode_init().

int AVCodecContext::max_prediction_order
  • encoding: Set by user.
  • decoding: unused

Definition at line 2455 of file avcodec.h.

Referenced by alac_encode_init(), and flac_encode_init().

int AVCodecContext::max_qdiff

maximum quantizer difference between frames

  • encoding: Set by user.
  • decoding: unused

Definition at line 2298 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), get_diff_limited_q(), parse_ffconfig(), X264_init(), and XAVS_init().

int AVCodecContext::mb_cmp

macroblock comparison function (not supported yet)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1742 of file avcodec.h.

Referenced by check_bidir_mv(), direct_search(), encode_q_branch(), estimate_best_b_count(), ff_estimate_motion_b(), ff_estimate_p_frame_motion(), ff_init_me(), h263_mv4_search(), interlaced_search(), and sse_mb().

int AVCodecContext::mb_lmax

maximum MB lagrange multipler

  • encoding: Set by user.
  • decoding: unused

Definition at line 1986 of file avcodec.h.

Referenced by adaptive_quantization().

int AVCodecContext::mb_lmin

minimum MB lagrange multipler

  • encoding: Set by user.
  • decoding: unused

Definition at line 1979 of file avcodec.h.

Referenced by adaptive_quantization().

int AVCodecContext::mb_threshold

Macroblock threshold below which the user specified macroblock types will be used.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1943 of file avcodec.h.

Referenced by ff_estimate_b_frame_motion(), ff_estimate_p_frame_motion(), ff_MPV_encode_init(), and vp8_init().

int AVCodecContext::me_cmp
int AVCodecContext::me_method

Motion estimation algorithm used for video coding.

1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]

  • encoding: MUST be set by user.
  • decoding: unused

Definition at line 1541 of file avcodec.h.

Referenced by add_codec(), encode_blocks(), encode_frame(), encode_init(), ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), svq1_encode_plane(), X264_init(), XAVS_init(), and xvid_encode_init().

int AVCodecContext::me_penalty_compensation
  • encoding: Set by user.
  • decoding: unused

Definition at line 1993 of file avcodec.h.

Referenced by encode_picture().

int AVCodecContext::me_pre_cmp

motion estimation prepass comparison function

  • encoding: Set by user.
  • decoding: unused

Definition at line 1792 of file avcodec.h.

Referenced by ff_init_me(), and ff_pre_estimate_p_frame_motion().

int AVCodecContext::me_range

maximum motion estimation search range in subpel units If 0 then no limit.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1832 of file avcodec.h.

Referenced by encode_init(), ff_fix_long_mvs(), ff_fix_long_p_mvs(), ff_get_best_fcode(), ffm_read_header(), ffm_write_header(), get_limits(), mpeg1_encode_sequence_header(), X264_init(), and XAVS_init().

int AVCodecContext::me_sub_cmp

subpixel motion estimation comparison function

  • encoding: Set by user.
  • decoding: unused

Definition at line 1736 of file avcodec.h.

Referenced by direct_search(), encode_init(), encode_q_branch(), estimate_best_b_count(), ff_estimate_motion_b(), ff_estimate_p_frame_motion(), ff_init_me(), hpel_motion_search(), and qpel_motion_search().

int AVCodecContext::me_subpel_quality

subpel ME quality

  • encoding: Set by user.
  • decoding: unused

Definition at line 1806 of file avcodec.h.

Referenced by ffm_read_header(), ffm_write_header(), qpel_motion_search(), X264_init(), and XAVS_init().

int AVCodecContext::me_threshold

Motion estimation threshold below which no motion estimation is performed, but instead the user specified motion vectors are used.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1936 of file avcodec.h.

Referenced by copy_picture_attributes(), do_video_out(), encode_picture(), ff_estimate_b_frame_motion(), ff_estimate_p_frame_motion(), ff_MPV_encode_init(), and transcode_init().

int AVCodecContext::min_prediction_order
  • encoding: Set by user.
  • decoding: unused

Definition at line 2449 of file avcodec.h.

Referenced by alac_encode_init(), and flac_encode_init().

int AVCodecContext::misc_bits

Definition at line 2487 of file avcodec.h.

Referenced by encode_frame(), and ff_MPV_encode_picture().

int AVCodecContext::mpeg_quant

0-> h263 quant 1-> mpeg quant

  • encoding: Set by user.
  • decoding: unused

Definition at line 1640 of file avcodec.h.

Referenced by ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), and xvid_encode_init().

int AVCodecContext::mv0_threshold

Note: Value depends upon the compare function used for fullpel ME.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2043 of file avcodec.h.

Referenced by epzs_motion_search_internal().

int AVCodecContext::mv_bits

Definition at line 2480 of file avcodec.h.

Referenced by encode_frame(), and ff_MPV_encode_picture().

int AVCodecContext::noise_reduction

noise reduction strength

  • encoding: Set by user.
  • decoding: unused

Definition at line 1913 of file avcodec.h.

Referenced by ff_MPV_common_init(), ff_MPV_frame_start(), init_duplicate_context(), merge_context_after_encode(), update_noise_reduction(), vp8_init(), X264_init(), and XAVS_init().

int AVCodecContext::nsse_weight

noise vs.

sse weight for the nsse comparsion function

  • encoding: Set by user.
  • decoding: unused

Definition at line 2807 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), nsse16_c(), and nsse8_c().

void* AVCodecContext::opaque

Private data of the user, can be used to carry app specific stuff.

  • encoding: Set by user.
  • decoding: Set by user.

Definition at line 1396 of file avcodec.h.

Referenced by codec_get_buffer(), init_input_stream(), and update_context_from_user().

int AVCodecContext::p_count

Definition at line 2485 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

float AVCodecContext::p_masking

p block masking (0-> disabled)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1684 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

int AVCodecContext::p_tex_bits

Definition at line 2483 of file avcodec.h.

Referenced by encode_frame(), and ff_MPV_encode_picture().

enum AVPixelFormat AVCodecContext::pix_fmt

Pixel format, see AV_PIX_FMT_xxx.

May be set by the demuxer if known from headers. May be overriden by the decoder if it knows better.

  • encoding: Set by user.
  • decoding: Set by user if known, overridden by libavcodec if known
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1532 of file avcodec.h.

Referenced by aasc_decode_init(), add_input_streams(), add_video_stream(), alloc_buffer(), alloc_picture(), aura_decode_init(), avcodec_align_dimensions(), avcodec_align_dimensions2(), avcodec_decode_video2(), avcodec_default_reget_buffer(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), avpriv_dv_codec_profile(), avs_decode_init(), bethsoftvid_decode_init(), bfi_decode_init(), bfi_read_header(), bmp_decode_frame(), bmp_encode_frame(), bmp_encode_init(), bmv_read_header(), cdg_decode_init(), cdxl_decode_frame(), cinepak_decode_init(), cinvideo_decode_init(), cllc_decode_frame(), cmv_decode_init(), codec_get_buffer(), configure_input_video_filter(), cyuv_decode_init(), dc1394_read_common(), decode_frame(), decode_frame_byterun1(), decode_frame_header(), decode_frame_ilbm(), decode_init(), decode_plane(), decode_slice(), decode_slice_header(), decode_video(), decode_wmv9(), dfa_decode_init(), dnxhd_decode_header(), dnxhd_encode_init(), dv_extract_video_info(), dvvideo_decode_frame(), dvvideo_init_encoder(), encode_frame(), encode_init(), encode_init_ls(), encode_picture_lossless(), encode_picture_ls(), encode_rgb48_10bit(), encode_slice(), escape124_decode_init(), estimate_best_b_count(), fbdev_read_header(), ff_cavs_init(), ff_create_schro_frame(), ff_draw_horiz_band(), ff_get_buffer(), ff_h263_decode_init(), ff_mjpeg_decode_sof(), ff_mjpeg_encode_picture_header(), ff_MPV_common_init(), ff_MPV_encode_init(), ff_MPV_frame_end(), ff_pnm_decode_header(), ff_print_debug_info(), ff_rtp_send_jpeg(), ff_rv34_decode_init(), ff_vp56_init(), ffm_read_header(), ffm_write_header(), ffv1_decode_frame(), ffv1_encode_init(), film_read_header(), flashsv_decode_init(), flic_decode_frame(), flic_decode_init(), gif_decode_frame(), gif_write_header(), grab_read_header(), gxf_write_header(), gxf_write_mpeg_auxiliary(), gxf_write_umf_media_mpeg(), h261_decode_init(), h264_slice_header_init(), has_codec_parameters(), idcin_decode_init(), img_read_header(), init_decoder(), init_image(), ipvideo_decode_init(), ir2_decode_init(), jpeg_put_comments(), lag_decode_arith_plane(), lag_decode_frame(), lag_pred_line(), libopenjpeg_create_image(), libopenjpeg_decode_frame(), libopenjpeg_encode_frame(), libschroedinger_encode_init(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), load_input_picture(), mimic_decode_frame(), mm_decode_init(), mov_get_dv_codec_tag(), mov_get_rawvideo_codec_tag(), mp_decode_init(), msrle_decode_init(), mss1_decode_init(), mss2_decode_frame(), mss2_decode_init(), mss3_decode_init(), mss4_decode_init(), msvideo1_decode_8bit(), msvideo1_decode_init(), mtv_read_header(), mxf_parse_structural_metadata(), new_video_stream(), open_video(), pam_encode_frame(), parse_source_parameters(), pcx_decode_frame(), pcx_encode_frame(), png_enc_init(), pnm_decode_frame(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), ptx_decode_frame(), qtrle_decode_init(), qtrle_encode_frame(), qtrle_encode_init(), query_formats(), raw_decode(), raw_encode(), raw_init_decoder(), raw_init_encoder(), rawvideo_read_header(), rawvideo_read_packet(), read_header(), rl2_decode_init(), roq_decode_frame(), roq_decode_init(), rpza_decode_init(), rv10_decode_init(), seqvideo_decode_init(), set_chroma_format(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smc_decode_init(), sunrast_decode_frame(), sunrast_encode_init(), svq1_decode_init(), svq1_encode_frame(), svq3_decode_init(), targa_encode_frame(), tgq_decode_init(), tgv_decode_init(), tmv_decode_init(), tmv_read_header(), tqi_decode_init(), transcode_init(), truemotion1_decode_header(), tscc2_decode_init(), txd_decode_frame(), ulti_decode_init(), update_context_from_thread(), utvideo_encode_frame(), utvideo_encode_init(), v410_decode_init(), v4l2_read_header(), vble_decode_init(), vc1_decode_frame(), vc1_decode_init(), vcr1_decode_init(), vcr2_init_sequence(), vfw_read_header(), video_encode_example(), video_get_buffer(), vmdvideo_decode_init(), vp3_decode_init(), vp8_decode_init(), vp8_init(), vqa_decode_init(), write_header(), write_video_frame(), x11grab_read_header(), X264_init(), xan_decode_init(), xiph_parse_fmtp_pair(), xvid_encode_frame(), xwd_decode_frame(), xwd_encode_frame(), yop_decode_init(), yuv4_read_header(), yuv4_read_packet(), and zerocodec_decode_init().

AVPacket* AVCodecContext::pkt

Current packet as passed into the decoder, to avoid having to pass the packet into every function.

Currently only valid inside lavc and get/release_buffer callbacks.

  • decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
  • encoding: unused

Definition at line 2933 of file avcodec.h.

Referenced by avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), avcodec_default_reget_buffer(), ff_get_buffer(), frame_thread_init(), and raw_decode().

int AVCodecContext::pre_dia_size

ME prepass diamond size & shape.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1799 of file avcodec.h.

Referenced by ff_init_me(), and pre_estimate_motion_thread().

int AVCodecContext::pre_me

prepass for motion estimation

  • encoding: Set by user.
  • decoding: unused

Definition at line 1785 of file avcodec.h.

Referenced by encode_picture().

int AVCodecContext::prediction_method

prediction method (needed for huffyuv)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1704 of file avcodec.h.

Referenced by encode_init(), encode_picture_lossless(), encode_picture_ls(), ff_mjpeg_encode_picture_header(), png_enc_init(), and utvideo_encode_init().

void* AVCodecContext::priv_data

Definition at line 1381 of file avcodec.h.

Referenced by a64multi_close_encoder(), a64multi_encode_frame(), a64multi_init_encoder(), aac_decode_close(), aac_decode_frame(), aac_decode_frame_int(), aac_decode_init(), aac_encode_close(), aac_encode_end(), aac_encode_frame(), aac_encode_init(), aasc_decode_end(), aasc_decode_frame(), aasc_decode_init(), ac3_decode_end(), ac3_decode_frame(), ac3_decode_init(), ac3_fixed_encode_init(), adpcm_compress_trellis(), adpcm_decode_frame(), adpcm_decode_init(), adpcm_encode_close(), adpcm_encode_init(), adpcm_swf_decode(), adx_decode_flush(), adx_decode_frame(), adx_decode_init(), adx_encode_frame(), adx_encode_header(), adx_encode_init(), alac_decode_close(), alac_decode_frame(), alac_decode_init(), alac_encode_close(), alac_encode_frame(), alac_encode_init(), allocate_tables(), amr_wb_encode_close(), amr_wb_encode_frame(), amr_wb_encode_init(), amrnb_decode_frame(), amrnb_decode_init(), amrwb_decode_frame(), amrwb_decode_init(), ape_decode_close(), ape_decode_frame(), ape_decode_init(), ape_flush(), apply_window_and_mdct(), atrac1_decode_end(), atrac1_decode_frame(), atrac1_decode_init(), atrac3_decode_close(), atrac3_decode_frame(), atrac3_decode_init(), aura_decode_end(), aura_decode_frame(), aura_decode_init(), avcodec_close(), avcodec_copy_context(), avcodec_get_context_defaults3(), avcodec_open2(), avs_decode_end(), avs_decode_frame(), bethsoftvid_decode_end(), bethsoftvid_decode_frame(), bethsoftvid_decode_init(), bfi_decode_close(), bfi_decode_frame(), bfi_decode_init(), bmp_decode_end(), bmp_decode_frame(), bmp_decode_init(), bmp_encode_frame(), bmp_encode_init(), bmv_aud_decode_frame(), bmv_aud_decode_init(), cavs_decode_frame(), cavs_flush(), cdg_decode_end(), cdg_decode_frame(), cdg_decode_init(), cdxl_decode_end(), cdxl_decode_frame(), cdxl_decode_init(), cinaudio_decode_frame(), cinaudio_decode_init(), cinepak_decode_end(), cinepak_decode_frame(), cinepak_decode_init(), cinvideo_decode_end(), cinvideo_decode_frame(), cinvideo_decode_init(), cllc_decode_close(), cllc_decode_frame(), cllc_decode_init(), close_decoder(), cmv_decode_end(), cmv_decode_frame(), cmv_decode_init(), cng_decode_close(), cng_decode_flush(), cng_decode_frame(), cng_decode_init(), cng_encode_close(), cng_encode_frame(), cng_encode_init(), codec_child_next(), codec_reinit(), codecctl_int(), commit_bitstream_and_slice_buffer(), common_init(), cook_decode_close(), cook_decode_frame(), cook_decode_init(), cyuv_decode_end(), cyuv_decode_frame(), cyuv_decode_init(), dca_decode_end(), dca_decode_frame(), dca_decode_init(), decode_block(), decode_chunks(), decode_close(), decode_element(), decode_end(), decode_flush(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), decode_init(), decode_init_thread_copy(), decode_packet(), decode_slice(), decode_tag(), decode_update_thread_context(), decode_wmv9(), determine_bitrate(), dfa_decode_end(), dfa_decode_frame(), dfa_decode_init(), display_end_segment(), dnxhd_calc_bits_thread(), dnxhd_decode_close(), dnxhd_decode_frame(), dnxhd_decode_init(), dnxhd_encode_end(), dnxhd_encode_init(), dnxhd_encode_picture(), dnxhd_encode_thread(), dnxhd_mb_var_thread(), dnxhd_write_header(), dpcm_decode_frame(), dpcm_decode_init(), draw_char(), dv_decode_video_segment(), dv_encode_video_segment(), dvbsub_close_decoder(), dvbsub_decode(), dvbsub_display_end_segment(), dvbsub_encode(), dvbsub_init_decoder(), dvbsub_parse_clut_segment(), dvbsub_parse_display_definition_segment(), dvbsub_parse_object_segment(), dvbsub_parse_page_segment(), dvbsub_parse_pixel_data_block(), dvbsub_parse_region_segment(), dvvideo_close(), dvvideo_decode_frame(), eightsvx_decode_close(), eightsvx_decode_frame(), eightsvx_decode_init(), encode_close(), encode_end(), encode_frame(), encode_init(), encode_init_ls(), encode_nals(), encode_picture_lossless(), encode_picture_ls(), encode_plane(), encode_rgb48_10bit(), encode_slice(), encode_superframe(), end_frame(), erase_line(), erase_screen(), escape124_decode_close(), escape124_decode_frame(), escape124_decode_init(), execute_code(), Faac_encode_close(), Faac_encode_frame(), Faac_encode_init(), ff_ac3_encode_close(), ff_ac3_encode_init(), ff_asv_common_init(), ff_cavs_end(), ff_cavs_init(), ff_dvvideo_init(), ff_h263_decode_end(), ff_h263_decode_frame(), ff_h263_decode_init(), ff_h264_decode_init(), ff_huffyuv_common_init(), ff_ivi_decode_close(), ff_ivi_decode_frame(), ff_mjpeg_decode_end(), ff_mjpeg_decode_frame(), ff_mjpeg_decode_init(), ff_mpeg_flush(), ff_mpeg_update_thread_context(), ff_MPV_encode_end(), ff_MPV_encode_init(), ff_MPV_encode_picture(), ff_msmpeg4_decode_init(), ff_pnm_end(), ff_pnm_init(), ff_rv34_decode_end(), ff_rv34_decode_frame(), ff_rv34_decode_init(), ff_rv34_decode_init_thread_copy(), ff_rv34_decode_update_thread_context(), ff_snow_common_init_after_header(), ff_snow_release_buffer(), ff_vc1_decode_end(), ff_vdpau_h264_picture_complete(), ff_vdpau_h264_picture_start(), ff_vdpau_h264_set_reference_frames(), ff_vdpau_vc1_decode_picture(), ff_vp56_decode_frame(), ff_vp56_free(), ff_vp56_init(), ff_wma_end(), ff_wma_init(), ffv1_close(), ffv1_common_init(), ffv1_decode_frame(), ffv1_decode_init(), ffv1_encode_frame(), ffv1_encode_init(), fill_slice(), fill_slice_long(), find_quant_thread(), find_slice_quant(), finish_frame(), flac_decode_close(), flac_decode_frame(), flac_decode_init(), flac_encode_close(), flac_encode_frame(), flac_encode_init(), flashsv_decode_block(), flashsv_decode_end(), flashsv_decode_frame(), flashsv_decode_init(), flashsv_encode_end(), flashsv_encode_frame(), flashsv_encode_init(), flic_decode_end(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), flic_decode_init(), flush(), flush_dpb(), frame_configure_elements(), frame_thread_free(), frame_thread_init(), g722_decode_frame(), g722_decode_init(), g722_encode_close(), g722_encode_init(), g723_1_decode_frame(), g723_1_decode_init(), get_nb_samples(), get_stats(), gif_decode_close(), gif_decode_frame(), gif_decode_init(), gif_encode_close(), gif_encode_frame(), gif_encode_init(), gif_image_write_image(), gsm_decode_block(), gsm_decode_frame(), gsm_flush(), gsm_init(), h261_decode_end(), h261_decode_frame(), h261_decode_init(), h264_decode_end(), hscroll(), idcin_decode_end(), idcin_decode_frame(), idcin_decode_init(), ilbc_decode_frame(), ilbc_decode_init(), ilbc_encode_frame(), ilbc_encode_init(), imc_decode_close(), imc_decode_frame(), imc_decode_init(), ipvideo_decode_end(), ipvideo_decode_frame(), ipvideo_decode_init(), ir2_decode_end(), ir2_decode_frame(), ir2_decode_init(), lag_decode_end(), lag_decode_frame(), lag_decode_init(), latm_decode_frame(), latm_decode_init(), libgsm_decode_close(), libgsm_decode_frame(), libgsm_decode_init(), libgsm_encode_close(), libgsm_encode_frame(), libgsm_encode_init(), libgsm_flush(), libopenjpeg_decode_close(), libopenjpeg_decode_frame(), libopenjpeg_decode_init(), libopenjpeg_decode_init_thread_copy(), libopenjpeg_encode_close(), libopenjpeg_encode_frame(), libopenjpeg_encode_init(), libopus_decode(), libopus_decode_close(), libopus_decode_init(), libopus_encode(), libopus_encode_close(), libopus_encode_init(), libopus_flush(), libschroedinger_decode_close(), libschroedinger_decode_frame(), libschroedinger_decode_init(), libschroedinger_encode_close(), libschroedinger_encode_frame(), libschroedinger_encode_init(), libschroedinger_flush(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), libspeex_decode_close(), libspeex_decode_flush(), libspeex_decode_frame(), libspeex_decode_init(), log_encoder_error(), mace_decode_frame(), mace_decode_init(), mdec_common_init(), mimic_decode_end(), mimic_decode_frame(), mimic_decode_init(), mimic_decode_update_thread_context(), mjpegb_decode_frame(), mlp_decode_init(), mm_decode_end(), mm_decode_frame(), mm_decode_init(), mp3lame_encode_close(), mp3lame_encode_frame(), mp3lame_encode_init(), mp_decode_end(), mp_decode_frame(), mp_decode_init(), MPA_encode_frame(), MPA_encode_init(), mpc7_decode_close(), mpc7_decode_flush(), mpc7_decode_frame(), mpc7_decode_init(), mpc8_decode_flush(), mpc8_decode_frame(), mpc8_decode_init(), mpeg1_decode_picture(), mpeg1_decode_sequence(), mpeg_decode_end(), mpeg_decode_frame(), mpeg_decode_gop(), mpeg_decode_init(), mpeg_decode_postinit(), mpeg_decode_update_thread_context(), mpeg_get_pixelformat(), msrle_decode_end(), msrle_decode_frame(), msrle_decode_init(), mss1_decode_end(), mss1_decode_frame(), mss1_decode_init(), mss2_decode_end(), mss2_decode_frame(), mss2_decode_init(), mss3_decode_end(), mss3_decode_frame(), mss3_decode_init(), mss4_decode_end(), mss4_decode_frame(), mss4_decode_init(), msvideo1_decode_end(), msvideo1_decode_frame(), msvideo1_decode_init(), mxpeg_decode_end(), mxpeg_decode_frame(), mxpeg_decode_init(), oggvorbis_encode_close(), oggvorbis_encode_frame(), oggvorbis_encode_init(), oggvorbis_init_encoder(), pam_encode_frame(), parse_palette_segment(), parse_picture_segment(), parse_presentation_segment(), pcm_bluray_decode_frame(), pcm_bluray_decode_init(), pcm_decode_frame(), pcm_decode_init(), pcx_decode_frame(), pcx_encode_frame(), pcx_encode_init(), pcx_end(), pcx_init(), png_dec_end(), png_dec_init(), png_enc_init(), pnm_decode_frame(), pnm_encode_frame(), ptx_decode_frame(), ptx_end(), ptx_init(), put_audio_specific_config(), qcelp_decode_frame(), qcelp_decode_init(), qdm2_decode_close(), qdm2_decode_frame(), qdm2_decode_init(), qtrle_decode_end(), qtrle_decode_frame(), qtrle_decode_init(), qtrle_encode_end(), qtrle_encode_frame(), qtrle_encode_init(), queue_frames(), ra144_decode_frame(), ra144_decode_init(), ra144_encode_close(), ra144_encode_frame(), ra144_encode_init(), ra288_decode_frame(), ra288_decode_init(), raw_close_decoder(), raw_decode(), raw_init_decoder(), raw_init_encoder(), read_access_unit(), read_huffman_tree(), render_charset(), rl2_decode_end(), rl2_decode_frame(), rl2_decode_init(), roq_decode_end(), roq_decode_frame(), roq_decode_init(), roq_dpcm_encode_close(), roq_dpcm_encode_frame(), roq_dpcm_encode_init(), roq_encode_end(), roq_encode_frame(), roq_encode_init(), rpza_decode_end(), rpza_decode_frame(), rpza_decode_init(), rv10_decode_end(), rv10_decode_frame(), rv10_decode_init(), rv10_decode_packet(), rv30_decode_init(), rv40_decode_init(), s302m_decode_frame(), s302m_decode_init(), seqvideo_decode_end(), seqvideo_decode_frame(), seqvideo_decode_init(), set_chroma_format(), set_sample_rate_params(), sgi_end(), sgi_init(), shorten_decode_close(), shorten_decode_frame(), shorten_decode_init(), sipr_decode_frame(), sipr_decoder_init(), slice_end(), smc_decode_end(), smc_decode_frame(), smc_decode_init(), smka_decode_frame(), smka_decode_init(), start_frame(), submit_stats(), sunrast_decode_frame(), sunrast_encode_frame(), sunrast_encode_init(), sunrast_end(), sunrast_image_write_header(), sunrast_image_write_image(), sunrast_init(), svq1_decode_end(), svq1_decode_frame(), svq1_decode_frame_header(), svq1_decode_init(), svq1_encode_end(), svq1_encode_frame(), svq1_encode_init(), svq1_flush(), svq3_decode_end(), svq3_decode_frame(), svq3_decode_init(), svq3_decode_slice_header(), synth_frame(), synth_superframe(), tak_decode_close(), tak_decode_frame(), tak_decode_init(), targa_encode_init(), targa_end(), targa_init(), tgq_decode_end(), tgq_decode_frame(), tgq_decode_init(), tgv_decode_end(), tgv_decode_frame(), tgv_decode_init(), tiff_end(), tiff_init(), tmv_decode_close(), tmv_decode_frame(), tqi_decode_end(), tqi_decode_frame(), tqi_decode_init(), truemotion1_decode_end(), truemotion1_decode_frame(), truemotion1_decode_init(), truespeech_decode_frame(), truespeech_decode_init(), tscc2_decode_end(), tscc2_decode_frame(), tscc2_decode_init(), tta_decode_close(), tta_decode_frame(), tta_decode_init(), twin_decode_close(), twin_decode_frame(), twin_decode_init(), txd_decode_frame(), txd_end(), txd_init(), ulti_decode_end(), ulti_decode_frame(), ulti_decode_init(), update_frames(), utvideo_encode_close(), utvideo_encode_frame(), utvideo_encode_init(), vaapi_mpeg2_decode_slice(), vaapi_mpeg2_end_frame(), vaapi_mpeg2_start_frame(), vaapi_mpeg4_decode_slice(), vaapi_mpeg4_end_frame(), vaapi_mpeg4_start_frame(), vaapi_vc1_decode_slice(), vaapi_vc1_end_frame(), vaapi_vc1_start_frame(), vble_decode_close(), vble_decode_frame(), vble_decode_init(), vc1_decode_frame(), vc1_decode_init(), vcr1_common_init(), vcr1_decode_end(), vcr1_decode_frame(), vcr2_init_sequence(), vmdaudio_decode_frame(), vmdaudio_decode_init(), vmdvideo_decode_end(), vmdvideo_decode_frame(), vmdvideo_decode_init(), vorbis_decode_close(), vorbis_decode_flush(), vorbis_decode_frame(), vorbis_decode_init(), vorbis_encode_close(), vorbis_encode_frame(), vorbis_encode_init(), vp3_decode_end(), vp3_decode_flush(), vp3_decode_frame(), vp3_decode_init(), vp3_init_thread_copy(), vp3_update_thread_context(), vp56_size_changed(), vp5_decode_init(), vp6_decode_free(), vp6_decode_init(), vp8_decode(), vp8_decode_flush_impl(), vp8_decode_frame(), vp8_decode_free(), vp8_decode_init(), vp8_decode_init_thread_copy(), vp8_decode_mb_row_no_filter(), vp8_decode_mb_row_sliced(), vp8_decode_mv_mb_modes(), vp8_decode_update_thread_context(), vp8_encode(), vp8_filter_mb_row(), vp8_free(), vp8_init(), vqa_decode_end(), vqa_decode_frame(), vqa_decode_init(), wavpack_decode_block(), wavpack_decode_end(), wavpack_decode_flush(), wavpack_decode_frame(), wavpack_decode_init(), wma_decode_init(), wma_decode_superframe(), wmavoice_decode_end(), wmavoice_decode_init(), wmavoice_decode_packet(), wmavoice_flush(), wmv2_decode_end(), wmv2_decode_init(), wmv2_encode_init(), wmv9_init(), ws_snd_decode_frame(), ws_snd_decode_init(), X264_close(), X264_frame(), X264_init(), xan_decode_chroma(), xan_decode_end(), xan_decode_frame(), xan_decode_frame_type0(), xan_decode_frame_type1(), xan_decode_init(), XAVS_close(), XAVS_frame(), XAVS_init(), xvid_encode_close(), xvid_encode_frame(), xvid_encode_init(), yop_decode_close(), yop_decode_frame(), yop_decode_init(), zerocodec_decode_close(), zerocodec_decode_frame(), and zerocodec_decode_init().

float AVCodecContext::qblur

amount of qscale smoothing over time (0.0-1.0)

Definition at line 2277 of file avcodec.h.

Referenced by add_codec(), ff_rate_control_init(), ff_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), init_pass2(), X264_init(), and XAVS_init().

float AVCodecContext::qcompress

amount of qscale change between easy & hard scenes (0.0-1.0)

Definition at line 2276 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), get_qscale(), vp8_init(), X264_init(), and XAVS_init().

float AVCodecContext::rc_buffer_aggressivity

Definition at line 2347 of file avcodec.h.

Referenced by add_codec(), ffm_read_header(), ffm_write_header(), and modify_qscale().

const char* AVCodecContext::rc_eq

rate control equation

  • encoding: Set by user
  • decoding: unused

Definition at line 2331 of file avcodec.h.

Referenced by add_codec(), avcodec_copy_context(), ff_rate_control_init(), ffm_close(), ffm_read_header(), ffm_write_header(), and get_qscale().

int AVCodecContext::rc_initial_buffer_occupancy

Number of bits which should be loaded into the rc buffer before decoding starts.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2375 of file avcodec.h.

Referenced by avcodec_open2(), ff_rate_control_init(), ff_xvid_rate_control_init(), vp8_init(), X264_init(), and XAVS_init().

float AVCodecContext::rc_initial_cplx

initial complexity for pass1 ratecontrol

  • encoding: Set by user.
  • decoding: unused

Definition at line 2354 of file avcodec.h.

Referenced by ff_rate_control_init().

float AVCodecContext::rc_max_available_vbv_use

Ratecontrol attempt to use, at maximum, of what can be used without an underflow.

  • encoding: Set by user.
  • decoding: unused.

Definition at line 2361 of file avcodec.h.

Referenced by ff_MPV_encode_picture(), and modify_qscale().

int AVCodecContext::rc_min_rate
float AVCodecContext::rc_min_vbv_overflow_use

Ratecontrol attempt to use, at least, times the amount needed to prevent a vbv overflow.

  • encoding: Set by user.
  • decoding: unused.

Definition at line 2368 of file avcodec.h.

Referenced by modify_qscale().

RcOverride* AVCodecContext::rc_override

Definition at line 2324 of file avcodec.h.

Referenced by avcodec_copy_context(), get_qscale(), and new_video_stream().

int AVCodecContext::rc_override_count

ratecontrol override, see RcOverride

  • encoding: Allocated/set/freed by user.
  • decoding: unused

Definition at line 2323 of file avcodec.h.

Referenced by avcodec_copy_context(), get_qscale(), and new_video_stream().

float AVCodecContext::rc_qmod_amp

Definition at line 2308 of file avcodec.h.

Referenced by modify_qscale().

int AVCodecContext::rc_qmod_freq

Definition at line 2309 of file avcodec.h.

Referenced by modify_qscale().

float AVCodecContext::rc_qsquish

ratecontrol qmin qmax limiting method 0-> clipping, 1-> use a nice continuous function to limit qscale wthin qmin/qmax.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2306 of file avcodec.h.

Referenced by modify_qscale().

int AVCodecContext::rc_strategy

obsolete FIXME remove

Definition at line 1599 of file avcodec.h.

Referenced by ff_rate_control_init(), ff_rate_control_uninit(), and ff_rate_estimate_qscale().

int AVCodecContext::refs

number of reference frames

  • encoding: Set by user.
  • decoding: Set by lavc.

Definition at line 2021 of file avcodec.h.

Referenced by decode_slice_header(), encode_init(), ffm_read_header(), ffm_write_header(), X264_init(), and XAVS_init().

int(* AVCodecContext::reget_buffer)(struct AVCodecContext *c, AVFrame *pic)

Called at the beginning of a frame to get cr buffer for it.

Buffer type (size, hints) must be the same. libavcodec won't check it. libavcodec will pass previous buffer in pic, function should return same buffer or new buffer with old frame "painted" into it. If pic.data[0] == NULL must behave like get_buffer(). if CODEC_CAP_DR1 is not set then reget_buffer() must call avcodec_default_reget_buffer() instead of providing buffers allocated by some other means.

  • encoding: unused
  • decoding: Set by libavcodec, user can override.

Definition at line 2272 of file avcodec.h.

Referenced by aasc_decode_frame(), avcodec_get_context_defaults3(), avs_decode_frame(), bethsoftvid_decode_frame(), cdg_decode_frame(), cinepak_decode_frame(), cinvideo_decode_frame(), decode_frame(), decode_frame_byterun1(), decode_frame_ilbm(), flashsv_decode_frame(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), ir2_decode_frame(), mm_decode_frame(), mp_decode_frame(), msrle_decode_frame(), mss1_decode_frame(), mss2_decode_frame(), mss3_decode_frame(), mss4_decode_frame(), msvideo1_decode_frame(), qtrle_decode_frame(), roq_decode_frame(), rpza_decode_frame(), seqvideo_decode_frame(), smc_decode_frame(), truemotion1_decode_frame(), tscc2_decode_frame(), ulti_decode_frame(), and xan_decode_frame().

void(* AVCodecContext::release_buffer)(struct AVCodecContext *c, AVFrame *pic)

Called to release buffers which were allocated with get_buffer.

A released buffer can be reused in get_buffer(). pic.data[*] must be set to NULL. May be called from a different thread if frame multithreading is used, but not by more than one thread at once, so does not need to be reentrant.

  • encoding: unused
  • decoding: Set by libavcodec, user can override.

Definition at line 2258 of file avcodec.h.

Referenced by aasc_decode_end(), aura_decode_end(), aura_decode_frame(), avcodec_default_reget_buffer(), avcodec_get_context_defaults3(), avs_decode_end(), bethsoftvid_decode_end(), bfi_decode_close(), bfi_decode_frame(), bmp_decode_end(), bmp_decode_frame(), cavs_decode_frame(), cdg_decode_end(), cdg_decode_frame(), cdxl_decode_end(), cdxl_decode_frame(), cinepak_decode_end(), cinvideo_decode_end(), cllc_decode_close(), cllc_decode_frame(), cmv_decode_end(), cmv_decode_frame(), codec_reinit(), cyuv_decode_end(), cyuv_decode_frame(), decode_close(), decode_end(), decode_flush(), decode_frame(), decode_pic(), dfa_decode_end(), dfa_decode_frame(), dnxhd_decode_close(), dnxhd_decode_frame(), dvvideo_close(), dvvideo_decode_frame(), encode_end(), escape124_decode_close(), escape124_decode_frame(), execute_code(), ff_cavs_end(), ff_ivi_decode_close(), ff_ivi_decode_frame(), ff_mjpeg_decode_end(), ff_mjpeg_decode_sof(), ff_pnm_end(), ff_snow_common_end(), ff_snow_release_buffer(), ff_thread_release_buffer(), ff_vc1_decode_end(), ff_vp56_decode_frame(), ff_vp56_free(), ffv1_close(), ffv1_decode_frame(), flashsv_decode_end(), flashsv_decode_frame(), flic_decode_end(), gif_decode_close(), gif_decode_frame(), idcin_decode_end(), idcin_decode_frame(), init_image(), init_input_stream(), ipvideo_decode_end(), ipvideo_decode_frame(), ir2_decode_end(), ir2_decode_frame(), libschroedinger_decode_close(), libschroedinger_decode_frame(), mm_decode_end(), mp_decode_end(), msrle_decode_end(), mss1_decode_end(), mss2_decode_end(), mss2_decode_frame(), mss3_decode_end(), mss4_decode_end(), msvideo1_decode_end(), mxpeg_decode_end(), mxpeg_decode_frame(), pcx_decode_frame(), pcx_end(), png_dec_end(), pnm_decode_frame(), ptx_decode_frame(), ptx_end(), qtrle_decode_end(), release_delayed_buffers(), rl2_decode_end(), rl2_decode_frame(), roq_decode_end(), roq_encode_end(), rpza_decode_end(), select_input_picture(), seqvideo_decode_end(), sgi_end(), smc_decode_end(), sunrast_decode_frame(), sunrast_end(), svq1_decode_end(), svq1_decode_frame(), svq1_flush(), targa_end(), tgq_decode_end(), tgq_decode_frame(), tiff_end(), tmv_decode_close(), tmv_decode_frame(), tqi_decode_end(), tqi_decode_frame(), truemotion1_decode_end(), truemotion1_decode_header(), tscc2_decode_end(), txd_decode_frame(), txd_end(), ulti_decode_end(), update_context_from_user(), v410_decode_close(), v410_decode_frame(), vble_decode_close(), vble_decode_frame(), vcr1_decode_end(), vcr1_decode_frame(), vmdvideo_decode_end(), vmdvideo_decode_frame(), vqa_decode_end(), vqa_decode_frame(), xan_decode_end(), xan_decode_frame(), xwd_decode_close(), xwd_decode_frame(), yop_decode_close(), yop_decode_frame(), zerocodec_decode_close(), and zerocodec_decode_frame().

int64_t AVCodecContext::reordered_opaque

opaque 64bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque

Deprecated:
in favor of pkt_pts
  • encoding: unused
  • decoding: Set by user.

Definition at line 2614 of file avcodec.h.

Referenced by avcodec_default_reget_buffer(), avcodec_get_context_defaults3(), ff_get_buffer(), movie_get_frame(), raw_decode(), and update_context_from_user().

uint64_t AVCodecContext::request_channel_layout

Request decoder to use this channel layout if it can (0 for default)

  • encoding: unused
  • decoding: Set by user.

Definition at line 2171 of file avcodec.h.

Referenced by output_configure().

enum AVSampleFormat AVCodecContext::request_sample_fmt

Used to request a sample format from the decoder.

  • encoding: unused.
  • decoding: Set by user.

Definition at line 2185 of file avcodec.h.

Referenced by decode_init(), flac_set_bps(), libopus_decode_init(), and update_sample_fmt().

void(* AVCodecContext::rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb)

Definition at line 2470 of file avcodec.h.

Referenced by encode_thread().

int AVCodecContext::rtp_payload_size

Definition at line 2472 of file avcodec.h.

Referenced by encode_thread(), and ff_MPV_encode_init().

enum AVSampleFormat AVCodecContext::sample_fmt

audio sample format

  • encoding: Set by user.
  • decoding: Set by libavcodec.sample format
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 2111 of file avcodec.h.

Referenced by aac_decode_init(), ac3_decode_init(), add_audio_stream(), add_input_streams(), adpcm_decode_init(), adx_decode_init(), alac_decode_init(), alac_encode_init(), amr_decode_fix_avctx(), amrnb_decode_init(), amrwb_decode_init(), ape_decode_init(), atrac1_decode_init(), atrac3_decode_init(), audio_decode_example(), audio_encode_example(), audio_get_buffer(), avcodec_decode_audio4(), avcodec_encode_audio2(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), bmv_aud_decode_init(), cinaudio_decode_init(), cng_decode_init(), configure_input_audio_filter(), cook_decode_init(), copy_samples(), dca_decode_frame(), dca_decode_init(), decode_frame(), decode_init(), dpcm_decode_init(), dprint_options(), eightsvx_decode_init(), ff_get_buffer(), flac_decode_init(), flac_encode_init(), flac_set_bps(), g722_decode_init(), g723_1_decode_init(), gsm_init(), has_codec_parameters(), ilbc_decode_init(), imc_decode_init(), init_sample_buffers(), libgsm_decode_init(), libopus_decode(), libopus_decode_init(), libopus_encode(), libopus_encode_init(), libspeex_decode_init(), mace_decode_init(), mkv_write_tracks(), mlp_parse(), mp3lame_encode_frame(), mp3lame_encode_init(), mp_decode_frame(), mpc7_decode_init(), mpc8_decode_init(), new_audio_stream(), open_audio(), output_data(), pad_last_frame(), parse_streaminfo(), pcm_bluray_decode_frame(), pcm_bluray_parse_header(), pcm_decode_init(), qcelp_decode_init(), qdm2_decode_init(), ra144_decode_init(), ra288_decode_init(), read_decoding_params(), read_major_sync(), read_restart_header(), s302m_parse_frame_header(), set_bps_params(), shorten_decode_init(), sipr_decoder_init(), smka_decode_frame(), smka_decode_init(), tak_decode_frame(), transcode_init(), truespeech_decode_init(), tta_decode_init(), twin_decode_init(), update_sample_fmt(), vmdaudio_decode_init(), vorbis_decode_init(), wavpack_decode_block(), wavpack_decode_frame(), wavpack_decode_init(), wma_decode_init(), wmavoice_decode_init(), write_audio_frame(), write_element(), and ws_snd_decode_init().

int AVCodecContext::sample_rate

samples per second

Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 2103 of file avcodec.h.

Referenced by aac_decode_frame_int(), aac_decode_init(), aac_encode_frame(), aac_encode_init(), ac3_decode_frame(), add_audio_stream(), add_av_stream(), add_codec(), add_input_streams(), adpcm_encode_init(), adx_encode_header(), adx_encode_init(), adx_read_header(), aea_read_header(), aiff_read_header(), aiff_write_header(), alac_encode_init(), amf_parse_object(), amr_decode_fix_avctx(), amr_read_header(), amr_wb_encode_init(), amrnb_decode_init(), amrwb_decode_init(), apc_read_header(), ape_read_header(), apply_param_change(), audio_encode_example(), audio_read_header(), audio_read_packet(), audio_write_header(), av_get_audio_frame_duration(), avcodec_open2(), avcodec_string(), avisynth_read_header(), avpriv_adx_decode_header(), avpriv_flac_parse_streaminfo(), bfi_read_header(), bmv_read_header(), cdata_read_header(), cdxl_read_packet(), celt_header(), cin_read_header(), cng_decode_init(), compute_status(), configure_input_audio_filter(), create_audio_stream(), create_vorbis_context(), daud_header(), daud_write_header(), dca_decode_frame(), dca_parse(), decode_audio(), decode_frame(), decode_init(), decode_ppc(), decode_stream_header(), decode_wave_header(), dv_extract_audio_info(), dv_init_mux(), dxa_read_header(), ea_read_header(), encode_init(), Faac_encode_init(), ff_aac_ac3_parse(), ff_af_queue_add(), ff_compute_frame_duration(), ff_get_buffer(), ff_mov_read_stsd_entries(), ff_mp4_read_dec_config_descr(), ff_pcm_read_seek(), ff_psy_preprocess_init(), ff_rtp_get_codec_info(), ff_rtp_get_payload_type(), ff_rtp_parse_open(), ff_samples_to_time_base(), ff_voc_get_packet(), ff_wma_init(), ffm_read_header(), ffm_write_header(), film_read_header(), find_expected_header(), find_stream_in_feed(), flac_encode_init(), flac_header(), flv_read_packet(), flv_same_audio_codec(), flv_set_audio_codec(), flv_write_header(), g722_read_header(), g723_1_decode_init(), g723_1_init(), get_aiff_header(), get_audio_flags(), get_best_header(), get_bit_rate(), get_codec_data(), get_sindex(), gsm_init(), gsm_read_header(), gxf_write_header(), handle_file(), has_codec_parameters(), idcin_read_header(), iff_read_header(), ilbc_decode_init(), ilbc_encode_init(), ilbc_read_header(), imc_decode_init(), init_bitstream_params(), init_muxer(), init_pts(), ipmovie_read_header(), iss_read_header(), libgsm_decode_init(), libgsm_encode_init(), libopus_decode_init(), libopus_encode_init(), libopus_write_header(), libspeex_decode_init(), lxf_read_header(), matroska_read_header(), mkv_write_tracks(), mlp_parse(), mmf_read_header(), mov_write_audio_tag(), mov_write_esds_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_uuidprof_tag(), mp3_header_decompress(), mp3_write_xing(), mp3lame_encode_init(), MPA_encode_init(), mpc8_read_header(), mpc_read_header(), mpeg_mux_init(), mpegaudio_parse(), mpegps_read_packet(), mpegts_write_header(), mtv_read_header(), mxf_parse_structural_metadata(), mxf_write_generic_sound_common(), mxf_write_header(), mxf_write_wav_common(), mxg_read_header(), new_audio_stream(), nsv_read_chunk(), ogg_write_header(), ogg_write_packet(), oggvorbis_init_encoder(), ogm_dshow_header(), ogm_header(), oma_read_header(), oma_write_header(), open_audio(), opus_header(), output_packet(), parse_ffconfig(), parse_packet(), parse_strk(), pcm_bluray_parse_header(), pcm_encode_init(), pcm_read_header(), pmp_header(), psy_3gpp_init(), pulse_read_header(), qcp_read_header(), qdm2_decode_init(), r3d_read_reda(), read_desc_chunk(), read_header(), read_major_sync(), read_specific_config(), rl2_read_header(), rm_read_audio_stream_info(), rm_write_header(), roq_dpcm_encode_init(), roq_read_packet(), rso_read_header(), rso_write_header(), rtp_write_header(), rv10_write_header(), s302m_parse_frame_header(), search_for_quantizers_twoloop(), seq_read_header(), set_sample_rate_params(), show_stream(), smacker_read_header(), smjpeg_read_header(), smjpeg_write_header(), sol_read_header(), sox_read_header(), sox_write_header(), spdif_read_packet(), speex_header(), str_read_packet(), stream_component_open(), stream_cycle_channel(), swf_write_header(), tak_decode_frame(), tak_read_header(), thp_read_header(), tmv_read_header(), transcode_init(), tta_decode_init(), tta_read_header(), twin_decode_frame(), twin_decode_init(), validate_options(), vid_read_packet(), vmd_read_header(), vmdaudio_decode_init(), voc_write_packet(), vorbis_decode_init(), vorbis_header(), vqf_read_header(), wav_write_header(), wav_write_trailer(), wc3_read_header(), wmavoice_decode_init(), write_manifest(), write_streamheader(), wsaud_read_header(), wsvqa_read_packet(), wv_read_header(), xa_read_header(), xmv_read_header(), xwma_read_header(), and yop_read_header().

int AVCodecContext::scenechange_factor

Multiplied by qscale for each frame and added to scene_change_score.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2035 of file avcodec.h.

int AVCodecContext::scenechange_threshold

scene change detection threshold 0 is default, larger means fewer detected scene changes.

  • encoding: Set by user.
  • decoding: unused

Definition at line 1906 of file avcodec.h.

Referenced by encode_frame(), encode_picture(), ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), X264_init(), and XAVS_init().

int AVCodecContext::skip_bottom

Number of macroblock rows at the bottom which are skipped.

  • encoding: unused
  • decoding: Set by user.

Definition at line 1964 of file avcodec.h.

Referenced by decode_chunks(), and ff_er_frame_end().

int AVCodecContext::skip_count

Definition at line 2486 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

enum AVDiscard AVCodecContext::skip_idct
  • encoding: unused
  • decoding: Set by user.

Definition at line 2899 of file avcodec.h.

Referenced by MPV_decode_mb_internal(), and stream_component_open().

enum AVDiscard AVCodecContext::skip_loop_filter
  • encoding: unused
  • decoding: Set by user.

Definition at line 2892 of file avcodec.h.

Referenced by decode_slice_header(), decode_wmv9(), ff_vc1_decode_sequence_header(), stream_component_open(), vc1_decode_p_blocks(), vp56_mc(), and vp8_decode_frame().

int AVCodecContext::skip_top

Number of macroblock rows at the top which are skipped.

  • encoding: unused
  • decoding: Set by user.

Definition at line 1957 of file avcodec.h.

Referenced by ff_er_add_slice(), and ff_er_frame_end().

int AVCodecContext::slice_count

slice count

  • encoding: Set by libavcodec.
  • decoding: Set by user (or 0).

Definition at line 1698 of file avcodec.h.

Referenced by ff_rv34_decode_frame(), get_slice_offset(), rv10_decode_frame(), and update_context_from_user().

int AVCodecContext::slice_flags

slice flags

  • encoding: unused
  • decoding: Set by user.

Definition at line 1864 of file avcodec.h.

Referenced by ff_draw_horiz_band(), mpeg_field_start(), and update_context_from_user().

int* AVCodecContext::slice_offset

slice offsets in the frame in bytes

  • encoding: Set/allocated by libavcodec.
  • decoding: Set/allocated by user (or NULL).

Definition at line 1714 of file avcodec.h.

Referenced by avcodec_copy_context(), frame_thread_free(), get_slice_offset(), and update_context_from_user().

int AVCodecContext::slices

Number of slices.

Indicates number of picture subdivisions. Used for parallelized decoding.

  • encoding: Set by user
  • decoding: unused

Definition at line 2094 of file avcodec.h.

Referenced by ff_MPV_common_init(), ffv1_encode_init(), vp8_init(), and X264_init().

float AVCodecContext::spatial_cplx_masking

spatial complexity masking (0-> disabled)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1677 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

char* AVCodecContext::stats_in

pass2 encoding statistics input buffer Concatenated stuff from stats_out of pass1 should be placed here.

  • encoding: Allocated/set/freed by user.
  • decoding: unused

Definition at line 2509 of file avcodec.h.

Referenced by encode_init(), ff_rate_control_init(), ffv1_encode_init(), submit_stats(), transcode(), transcode_init(), vp8_init(), and xvid_encode_init().

char* AVCodecContext::stats_out
unsigned int AVCodecContext::stream_codec_tag

fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').

This is used to work around some encoder bugs.

  • encoding: unused
  • decoding: Set by user, will be converted to uppercase by libavcodec during init.

Definition at line 1372 of file avcodec.h.

Referenced by avi_read_header(), avisynth_read_header(), and ff_MPV_common_init().

int AVCodecContext::strict_std_compliance

strictly follow the standard (MPEG4, ...).

  • encoding: Set by user.
  • decoding: Set by user. Setting this to STRICT or higher means the encoder and decoder will generally do stupid things, whereas setting it to unofficial or lower will mean the encoder might produce output that is not supported by all spec-compliant decoders. Decoders don't differentiate between normal, unofficial and experimental (that is, they always try to decode things when they can) unless they are explicitly asked to behave stupidly (=strictly conform to the specs)

Definition at line 2546 of file avcodec.h.

Referenced by avcodec_open2(), decode_postinit(), encode_init(), ff_fix_long_p_mvs(), ff_get_best_fcode(), ff_MPV_encode_init(), ffm_read_header(), ffm_write_header(), ffv1_encode_init(), find_frame_rate_index(), libgsm_encode_init(), mov_get_codec_tag(), mp3_header_compress(), parse_ffconfig(), and validate_codec_tag().

uint8_t* AVCodecContext::subtitle_header

Header containing style information for text subtitles.

For SUBTITLE_ASS subtitle type, it should contain the whole ASS [Script Info] and [V4+ Styles] section, plus the [Events] line and the Format line following. It shouldn't include any Dialogue line.

Definition at line 2916 of file avcodec.h.

Referenced by ass_decode_init(), ass_encode_init(), avcodec_open2(), avformat_free_context(), ff_ass_subtitle_header(), transcode(), and transcode_init().

int AVCodecContext::subtitle_header_size
float AVCodecContext::temporal_cplx_masking

temporary complexity masking (0-> disabled)

  • encoding: Set by user.
  • decoding: unused

Definition at line 1670 of file avcodec.h.

Referenced by adaptive_quantization(), and ff_MPV_encode_init().

int AVCodecContext::thread_safe_callbacks

Set by the client if its custom get_buffer() callback can be called synchronously from another thread, which allows faster multithreaded decoding.

draw_horiz_band() will be called from other threads regardless of this setting. Ignored if the default get_buffer() is used.

  • encoding: Set by user.
  • decoding: Set by user.

Definition at line 2761 of file avcodec.h.

Referenced by ff_thread_get_buffer(), frame_worker_thread(), and submit_packet().

int AVCodecContext::thread_type

Which multithreading methods to use.

Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread, so clients which cannot provide future frames should not use it.

  • encoding: Set by user, otherwise the default is used.
  • decoding: Set by user, otherwise the default is used.

Definition at line 2742 of file avcodec.h.

Referenced by validate_thread_parameters(), and X264_init().

int AVCodecContext::ticks_per_frame

For some codecs, the time base is closer to the field rate than the frame rate.

Most notably, H.264 and MPEG-2 specify time_base as half of frame duration if no telecine is used ...

Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.

Definition at line 1473 of file avcodec.h.

Referenced by compute_pkt_fields2(), decode_sequence_header_adv(), ff_compute_frame_duration(), ff_h264_decode_init(), mpeg_decode_postinit(), output_packet(), transcode_init(), update_context_from_thread(), vc1_extract_headers(), and vp8_encode().

AVRational AVCodecContext::time_base

This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.

For fixed-fps content, timebase should be 1/framerate and timestamp increments should be identically 1.

  • encoding: MUST be set by user.
  • decoding: Set by libavcodec.
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1464 of file avcodec.h.

Referenced by add_av_stream(), add_codec(), add_video_stream(), avcodec_get_context_defaults3(), avcodec_open2(), avcodec_string(), avi_write_header(), check_recording_time(), cmv_process_header(), compute_pkt_fields(), compute_pkt_fields2(), compute_status(), dc1394_read_common(), decode_frame(), decode_seq_header(), decode_sequence_header_adv(), decode_vol_header(), decode_vop_header(), dirac_header(), do_audio_out(), do_subtitle_out(), do_video_out(), do_video_stats(), dump_stream_format(), dv_extract_video_info(), dvvideo_decode_frame(), encode_ext_header(), encode_init(), estimate_best_b_count(), fbdev_read_header(), ff_af_queue_add(), ff_compute_frame_duration(), ff_flv_encode_picture_header(), ff_framehash_write_header(), ff_h261_encode_picture_header(), ff_h263_decode_picture_header(), ff_h263_encode_picture_header(), ff_h263_show_pict_info(), ff_h264_decode_init(), ff_mpeg4_encode_picture_header(), ff_MPV_encode_init(), ff_MPV_encode_picture(), ff_msmpeg4_encode_ext_header(), ff_rate_control_init(), ff_rate_estimate_qscale(), ff_samples_to_time_base(), ff_set_mpeg4_time(), ff_vbv_update(), ff_vdpau_mpeg4_decode_picture(), ff_xvid_rate_control_init(), ff_xvid_rate_estimate_qscale(), ffm_read_header(), ffm_write_header(), find_frame_rate_index(), flush_encoders(), flv_write_header(), get_video_format_idx(), gif_write_video(), grab_read_header(), h261_decode_picture_header(), h264_slice_header_init(), init_muxer(), init_pass2(), init_pts(), libschroedinger_encode_init(), libschroedinger_handle_first_access_unit(), mkv_write_tracks(), modify_qscale(), mov_get_dv_codec_tag(), mov_write_dvc1_structs(), mov_write_header(), mov_write_uuidprof_tag(), mpeg4_encode_gop_header(), mpeg4_encode_vol_header(), mpeg_decode_postinit(), mpegts_write_header(), mpegvideo_extract_headers(), mpegvideo_parse(), mxf_write_header(), ogg_write_header(), opt_target(), output_packet(), output_picture2(), parse_ffconfig(), parse_forced_key_frames(), parse_packet(), parse_source_parameters(), poll_filter(), rm_write_header(), rtp_write_header(), set_frame_distances(), show_stream(), swf_write_header(), tb_unreliable(), tgq_decode_init(), tgv_decode_init(), tqi_decode_init(), transcode_init(), txd_read_header(), update_context_from_thread(), v4l2_read_header(), v4l2_set_parameters(), vaapi_mpeg4_start_frame(), vfw_read_header(), video_encode_example(), vp8_init(), write_trailer(), write_video_frame(), x11grab_read_header(), X264_init(), XAVS_init(), xvid_correct_framerate(), and xvid_encode_init().

int64_t AVCodecContext::timecode_frame_start

GOP timecode frame start number, in non drop frame format.

  • encoding: Set by user.
  • decoding: unused

Definition at line 2462 of file avcodec.h.

Referenced by mpeg1_encode_sequence_header().

int AVCodecContext::trellis

trellis RD quantization

  • encoding: Set by user.
  • decoding: unused

Definition at line 2443 of file avcodec.h.

Referenced by adpcm_compress_trellis(), adpcm_encode_init(), encode_block(), encode_end(), encode_init(), ff_MPV_encode_init(), g722_encode_init(), X264_init(), XAVS_init(), and xvid_encode_init().

uint64_t AVCodecContext::vbv_delay

VBV delay coded in the last frame (in periods of a 27 MHz clock).

Used for compliant TS muxing.

  • encoding: Set by libavcodec.
  • decoding: unused.

Definition at line 2941 of file avcodec.h.

Referenced by ff_MPV_encode_picture().

int AVCodecContext::width

picture width / height.

  • encoding: MUST be set by user.
  • decoding: Set by libavcodec. Note: For compatibility it is possible to set this instead of coded_width/height before decoding.
Examples:
libavcodec/api-example.c, and libavformat/output-example.c.

Definition at line 1507 of file avcodec.h.

Referenced by a64multi_encode_frame(), aasc_decode_frame(), add_av_stream(), add_codec(), add_input_streams(), add_video_stream(), alloc_buffer(), alloc_picture(), amf_parse_object(), apply_param_change(), asf_read_stream_properties(), asf_write_header1(), aura_decode_frame(), aura_decode_init(), av_mpeg4_decode_header(), avcodec_decode_video2(), avcodec_default_reget_buffer(), avcodec_encode_video2(), avcodec_open2(), avcodec_set_dimensions(), avcodec_string(), avi_read_header(), avi_write_header(), avisynth_read_header(), avpriv_dv_codec_profile(), avs_read_packet(), bethsoftvid_decode_frame(), bfi_decode_frame(), bfi_decode_init(), bfi_read_header(), bink_decode_plane(), binkb_decode_plane(), bitline2chunky(), bitplanar2chunky(), bmp_decode_frame(), bmp_encode_frame(), bmv_read_header(), cdg_decode_init(), cdxl_decode_frame(), cdxl_decode_ham6(), cdxl_decode_ham8(), cdxl_read_packet(), cin_read_header(), cinepak_decode(), cinepak_decode_init(), cinvideo_decode_frame(), cinvideo_decode_init(), cmv_decode_inter(), cmv_decode_intra(), cmv_process_header(), codec_get_buffer(), codec_reinit(), common_init(), compute_status(), configure_input_video_filter(), configure_output_video_filter(), cyuv_decode_init(), dc1394_read_common(), decode_13(), decode_frame(), decode_frame_byterun1(), decode_frame_header(), decode_frame_ilbm(), decode_i2_frame(), decode_i_frame(), decode_init(), decode_p_frame(), decode_picture_header(), decode_seq_header(), decode_sequence_header_adv(), decode_slice_header(), decode_stream_header(), decode_video(), dfa_decode_frame(), dfa_decode_init(), dfa_read_header(), dnxhd_decode_frame(), dnxhd_encode_init(), dnxhd_mb_var_thread(), dnxhd_write_header(), do_video_stats(), draw_char(), dump_stream_format(), dv_extract_video_info(), dv_write_pack(), dvvideo_init_encoder(), dxa_read_header(), ea_read_header(), encode_frame(), encode_init(), encode_picture_ls(), encode_rgb48_10bit(), encode_slice(), erase_screen(), escape124_decode_frame(), escape124_decode_init(), estimate_best_b_count(), execute_code(), fbdev_read_header(), ff_asv_common_init(), ff_ccitt_unpack(), ff_create_schro_frame(), ff_dnxhd_find_cid(), ff_get_buffer(), ff_huffyuv_common_init(), ff_mov_read_stsd_entries(), ff_mpeg_update_thread_context(), ff_MPV_encode_init(), ff_mss12_decode_init(), ff_pnm_decode_header(), ff_print_debug_info(), ff_rm_read_mdpr_codecdata(), ff_rtp_send_jpeg(), ff_rv34_decode_init(), ff_sauce_read(), ff_snow_alloc_blocks(), ff_snow_common_init_after_header(), ff_snow_frame_start(), ff_vc1_decode_entry_point(), ff_vc1_decode_sequence_header(), ffm_read_header(), ffm_write_header(), ffv1_common_init(), ffv1_encode_frame(), ffv1_init_slice_contexts(), fill_picture_parameters(), film_read_header(), find_slice_quant(), find_stream_in_feed(), flashsv_decode_frame(), flashsv_encode_init(), flic_decode_frame_15_16BPP(), flic_decode_frame_8BPP(), get_video_format_idx(), gif_encode_frame(), gif_encode_init(), gif_image_write_header(), gif_image_write_image(), gif_write_header(), gif_write_video(), grab_read_header(), halfpel_interpol(), handle_file(), has_codec_parameters(), hscroll(), idcin_decode_vlcs(), idcin_read_header(), iff_read_header(), img_read_header(), img_read_packet(), init_bundles(), init_image(), init_muxer(), ipmovie_read_header(), ipvideo_decode_frame(), ipvideo_decode_opcodes(), ir2_decode_frame(), ivf_write_header(), lag_decode_arith_plane(), lag_decode_frame(), libopenjpeg_copy_packed16(), libopenjpeg_copy_packed8(), libopenjpeg_copy_unpacked16(), libopenjpeg_copy_unpacked8(), libopenjpeg_create_image(), libopenjpeg_encode_frame(), libschroedinger_encode_init(), libschroedinger_frame_from_data(), libschroedinger_handle_first_access_unit(), matroska_read_header(), mca(), mimic_decode_frame(), mkv_write_tracks(), mm_decode_intra(), motion_compensation(), mov_get_dv_codec_tag(), mov_read_trak(), mov_write_avid_tag(), mov_write_header(), mov_write_isml_manifest(), mov_write_tapt_tag(), mov_write_tkhd_tag(), mov_write_uuidprof_tag(), mov_write_video_tag(), movie_init(), mp_decode_frame(), mp_decode_frame_helper(), mp_decode_init(), mp_decode_line(), mp_read_changes_map(), mpegvideo_extract_headers(), msrle_decode_frame(), msrle_decode_pal4(), mss1_decode_frame(), mss2_decode_frame(), mss3_decode_frame(), mss3_decode_init(), mss4_decode_frame(), mss4_decode_init(), msvideo1_decode_16bit(), msvideo1_decode_8bit(), mtv_read_header(), mxf_parse_mpeg2_frame(), mxf_parse_structural_metadata(), mxf_write_cdci_common(), new_video_stream(), nsv_parse_NSVs_header(), nuv_header(), ogm_dshow_header(), ogm_header(), open_output_file(), open_video(), pam_encode_frame(), parse_ffconfig(), parse_h264_sdp_line(), parse_picture(), parse_picture_segment(), parse_presentation_segment(), parse_vtrk(), pcx_decode_frame(), pcx_encode_frame(), pmp_header(), pnm_decode_frame(), pnm_encode_frame(), pnm_parse(), pre_process_video_frame(), print_report(), ptx_decode_frame(), qtrle_encode_frame(), qtrle_encode_init(), qtrle_encode_line(), queue_picture(), r3d_read_red1(), raw_decode(), raw_encode(), raw_init_decoder(), rawvideo_read_header(), rawvideo_read_packet(), read_argb_line(), read_frame(), read_header(), read_packet(), read_rgb24_component_line(), read_seek(), rl2_decode_init(), rl2_read_header(), rl2_rle_decode(), roq_decode_frame(), roq_decode_init(), roq_encode_init(), roq_read_packet(), rpl_read_header(), rpza_decode_stream(), rv10_write_header(), seq_read_header(), show_stream(), siff_parse_vbv1(), smacker_read_header(), smc_decode_stream(), smjpeg_write_header(), sp5x_decode_frame(), str_read_packet(), sunrast_decode_frame(), sunrast_encode_init(), sunrast_image_write_header(), sunrast_image_write_image(), svq1_decode_init(), svq1_encode_end(), svq1_encode_init(), svq3_decode_init(), swf_write_header(), swf_write_video(), targa_encode_frame(), tgq_decode_frame(), tgv_decode_frame(), tgv_decode_inter(), theora_header(), thp_read_header(), tm2_decode_blocks(), tm2_motion_block(), tmv_decode_frame(), tmv_read_header(), to_meta_with_crop(), tqi_decode_frame(), transcode_init(), truemotion1_decode_16bit(), truemotion1_decode_24bit(), truemotion1_decode_header(), truemotion1_decode_init(), tscc2_decode_init(), txd_decode_frame(), ulti_decode_init(), update_context_from_thread(), update_dimensions(), utvideo_encode_frame(), utvideo_encode_init(), v410_decode_frame(), v410_decode_init(), v410_encode_frame(), v410_encode_init(), v4l2_read_header(), vb_decode_framedata(), vble_decode_frame(), vble_decode_init(), vc1_decode_frame(), vc1_decode_init(), vc1t_read_header(), vc1test_write_header(), vcr1_decode_frame(), vcr1_decode_init(), vfw_read_header(), video_decode_example(), video_encode_example(), video_get_buffer(), video_open(), video_thread(), vmd_decode(), vp3_decode_init(), vp6_parse_header(), vp8_decode(), vp8_init(), wc3_read_header(), write_manifest(), write_packet(), write_streamheader(), write_trailer(), write_video_frame(), wsvqa_read_header(), x11grab_read_header(), X264_init(), xan_decode_chroma(), xan_decode_frame_type0(), xan_decode_frame_type1(), xan_decode_init(), xan_wc3_copy_pixel_run(), xan_wc3_decode_frame(), xan_wc3_output_pixel_run(), XAVS_init(), xbm_encode_frame(), xiph_parse_fmtp_pair(), xmv_read_header(), xvid_encode_frame(), xvid_encode_init(), xwd_decode_frame(), xwd_encode_frame(), yop_decode_frame(), yop_decode_init(), yop_read_header(), yuv4_read_header(), yuv4_read_packet(), zerocodec_decode_frame(), and zmbv_me().

int AVCodecContext::workaround_bugs

Work around bugs in encoders which sometimes cannot be detected automatically.

  • encoding: Set by user
  • decoding: Set by user

Definition at line 2516 of file avcodec.h.

Referenced by ff_h263_decode_init(), ff_h264_decode_init(), ff_mpeg4_set_direct_mv(), and stream_component_open().

int AVCodecContext::xvmc_acceleration

The documentation for this struct was generated from the following file: