Basic definitions, functions for querying libavcodec capabilities, allocating core structures, etc. More...

Modules
	AVPacket
	Types and functions for working with AVPacket.

	AVPicture
	Functions for working with AVPicture.

Data Structures
struct	AVCodecDescriptor
	This struct describes the properties of a single codec described by an AVCodecID. More...

struct	RcOverride

struct	AVPanScan
	Pan Scan area. More...

struct	AVCodecContext
	main external API structure. More...

struct	AVProfile
	AVProfile. More...

struct	AVCodec
	AVCodec. More...

struct	AVHWAccel
	AVHWAccel. More...

struct	AVSubtitleRect

struct	AVSubtitle

Macros
#define	AV_CODEC_PROP_INTRA_ONLY (1 << 0)
	Codec uses only intra compression.

#define	AV_CODEC_PROP_LOSSY (1 << 1)
	Codec supports lossy compression.

#define	AV_CODEC_PROP_LOSSLESS (1 << 2)
	Codec supports lossless compression.

#define	AV_CODEC_PROP_BITMAP_SUB (1 << 16)
	Subtitle codec is bitmap based Decoded AVSubtitle data can be read from the AVSubtitleRect->pict field.

#define	AV_CODEC_PROP_TEXT_SUB (1 << 17)
	Subtitle codec is text based.

#define	FF_MAX_B_FRAMES 16

#define	CODEC_FLAG_UNALIGNED 0x0001
	Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e.g.

#define	CODEC_FLAG_QSCALE 0x0002
	Use fixed qscale.

#define	CODEC_FLAG_4MV 0x0004
	4 MV per MB allowed / advanced prediction for H.263.

#define	CODEC_FLAG_QPEL 0x0010
	Use qpel MC.

#define	CODEC_FLAG_GMC 0x0020
	Use GMC.

#define	CODEC_FLAG_MV0 0x0040
	Always try a MB with MV=<0,0>.

#define	CODEC_FLAG_INPUT_PRESERVED 0x0100
	The parent program guarantees that the input for B-frames containing streams is not written to for at least s->max_b_frames+1 frames, if this is not set the input will be copied.

#define	CODEC_FLAG_PASS1 0x0200
	Use internal 2pass ratecontrol in first pass mode.

#define	CODEC_FLAG_PASS2 0x0400
	Use internal 2pass ratecontrol in second pass mode.

#define	CODEC_FLAG_GRAY 0x2000
	Only decode/encode grayscale.

#define	CODEC_FLAG_EMU_EDGE 0x4000
	Don't draw edges.

#define	CODEC_FLAG_PSNR 0x8000
	error[?] variables will be set during encoding.

#define	CODEC_FLAG_TRUNCATED

#define	CODEC_FLAG_NORMALIZE_AQP 0x00020000
	Normalize adaptive quantization.

#define	CODEC_FLAG_INTERLACED_DCT 0x00040000
	Use interlaced DCT.

#define	CODEC_FLAG_LOW_DELAY 0x00080000
	Force low delay.

#define	CODEC_FLAG_GLOBAL_HEADER 0x00400000
	Place global headers in extradata instead of every keyframe.

#define	CODEC_FLAG_BITEXACT 0x00800000
	Use only bitexact stuff (except (I)DCT).

#define	CODEC_FLAG_AC_PRED 0x01000000
	H.263 advanced intra coding / MPEG-4 AC prediction.

#define	CODEC_FLAG_LOOP_FILTER 0x00000800
	loop filter

#define	CODEC_FLAG_INTERLACED_ME 0x20000000
	interlaced motion estimation

#define	CODEC_FLAG_CLOSED_GOP 0x80000000

#define	CODEC_FLAG2_FAST 0x00000001
	Allow non spec compliant speedup tricks.

#define	CODEC_FLAG2_NO_OUTPUT 0x00000004
	Skip bitstream encoding.

#define	CODEC_FLAG2_LOCAL_HEADER 0x00000008
	Place global headers at every keyframe instead of in extradata.

#define	CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000
	timecode is in drop frame format. DEPRECATED!!!!

#define	CODEC_FLAG2_IGNORE_CROP 0x00010000
	Discard cropping information from SPS.

#define	CODEC_FLAG2_CHUNKS 0x00008000
	Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.

#define	CODEC_FLAG2_SHOW_ALL 0x00400000
	Show all frames before the first keyframe.

#define	CODEC_CAP_DRAW_HORIZ_BAND 0x0001
	Decoder can use draw_horiz_band callback.

#define	CODEC_CAP_DR1 0x0002
	Codec uses get_buffer() for allocating buffers and supports custom allocators.

#define	CODEC_CAP_TRUNCATED 0x0008

#define	CODEC_CAP_HWACCEL 0x0010

#define	CODEC_CAP_DELAY 0x0020
	Encoder or decoder requires flushing with NULL input at the end in order to give the complete and correct output.

#define	CODEC_CAP_SMALL_LAST_FRAME 0x0040
	Codec can be fed a final frame with a smaller size.

#define	CODEC_CAP_SUBFRAMES 0x0100
	Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time, demuxers which do not do are connected to a parser to split what they return into proper frames.

#define	CODEC_CAP_EXPERIMENTAL 0x0200
	Codec is experimental and is thus avoided in favor of non experimental encoders.

#define	CODEC_CAP_CHANNEL_CONF 0x0400
	Codec should fill in channel configuration and samplerate instead of container.

#define	CODEC_CAP_NEG_LINESIZES 0x0800
	Codec is able to deal with negative linesizes.

#define	CODEC_CAP_FRAME_THREADS 0x1000
	Codec supports frame-level multithreading.

#define	CODEC_CAP_SLICE_THREADS 0x2000
	Codec supports slice-based (or partition-based) multithreading.

#define	CODEC_CAP_PARAM_CHANGE 0x4000
	Codec supports changed parameters at any point.

#define	CODEC_CAP_AUTO_THREADS 0x8000
	Codec supports avctx->thread_count == 0 (auto).

#define	CODEC_CAP_VARIABLE_FRAME_SIZE 0x10000
	Audio encoder supports receiving a different number of samples in each call.

#define	CODEC_CAP_INTRA_ONLY 0x40000000
	Codec is intra only.

#define	CODEC_CAP_LOSSLESS 0x80000000
	Codec is lossless.

#define	MB_TYPE_INTRA4x4 0x0001

#define	MB_TYPE_INTRA16x16 0x0002

#define	MB_TYPE_INTRA_PCM 0x0004

#define	MB_TYPE_16x16 0x0008

#define	MB_TYPE_16x8 0x0010

#define	MB_TYPE_8x16 0x0020

#define	MB_TYPE_8x8 0x0040

#define	MB_TYPE_INTERLACED 0x0080

#define	MB_TYPE_DIRECT2 0x0100

#define	MB_TYPE_ACPRED 0x0200

#define	MB_TYPE_GMC 0x0400

#define	MB_TYPE_SKIP 0x0800

#define	MB_TYPE_P0L0 0x1000

#define	MB_TYPE_P1L0 0x2000

#define	MB_TYPE_P0L1 0x4000

#define	MB_TYPE_P1L1 0x8000

#define	MB_TYPE_L0 (MB_TYPE_P0L0 \| MB_TYPE_P1L0)

#define	MB_TYPE_L1 (MB_TYPE_P0L1 \| MB_TYPE_P1L1)

#define	MB_TYPE_L0L1 (MB_TYPE_L0 \| MB_TYPE_L1)

#define	MB_TYPE_QUANT 0x00010000

#define	MB_TYPE_CBP 0x00020000

#define	FF_QSCALE_TYPE_MPEG1 0

#define	FF_QSCALE_TYPE_MPEG2 1

#define	FF_QSCALE_TYPE_H264 2

#define	FF_QSCALE_TYPE_VP56 3

#define	AV_GET_BUFFER_FLAG_REF (1 << 0)
	The decoder will keep a reference to the frame and may reuse it later.

#define	AV_SUBTITLE_FLAG_FORCED 0x00000001

Enumerations
enum	AVCodecID { AV_CODEC_ID_NONE, AV_CODEC_ID_MPEG1VIDEO, AV_CODEC_ID_MPEG2VIDEO, AV_CODEC_ID_MPEG2VIDEO_XVMC, AV_CODEC_ID_H261, AV_CODEC_ID_H263, AV_CODEC_ID_RV10, AV_CODEC_ID_RV20, AV_CODEC_ID_MJPEG, AV_CODEC_ID_MJPEGB, AV_CODEC_ID_LJPEG, AV_CODEC_ID_SP5X, AV_CODEC_ID_JPEGLS, AV_CODEC_ID_MPEG4, AV_CODEC_ID_RAWVIDEO, AV_CODEC_ID_MSMPEG4V1, AV_CODEC_ID_MSMPEG4V2, AV_CODEC_ID_MSMPEG4V3, AV_CODEC_ID_WMV1, AV_CODEC_ID_WMV2, AV_CODEC_ID_H263P, AV_CODEC_ID_H263I, AV_CODEC_ID_FLV1, AV_CODEC_ID_SVQ1, AV_CODEC_ID_SVQ3, AV_CODEC_ID_DVVIDEO, AV_CODEC_ID_HUFFYUV, AV_CODEC_ID_CYUV, AV_CODEC_ID_H264, AV_CODEC_ID_INDEO3, AV_CODEC_ID_VP3, AV_CODEC_ID_THEORA, AV_CODEC_ID_ASV1, AV_CODEC_ID_ASV2, AV_CODEC_ID_FFV1, AV_CODEC_ID_4XM, AV_CODEC_ID_VCR1, AV_CODEC_ID_CLJR, AV_CODEC_ID_MDEC, AV_CODEC_ID_ROQ, AV_CODEC_ID_INTERPLAY_VIDEO, AV_CODEC_ID_XAN_WC3, AV_CODEC_ID_XAN_WC4, AV_CODEC_ID_RPZA, AV_CODEC_ID_CINEPAK, AV_CODEC_ID_WS_VQA, AV_CODEC_ID_MSRLE, AV_CODEC_ID_MSVIDEO1, AV_CODEC_ID_IDCIN, AV_CODEC_ID_8BPS, AV_CODEC_ID_SMC, AV_CODEC_ID_FLIC, AV_CODEC_ID_TRUEMOTION1, AV_CODEC_ID_VMDVIDEO, AV_CODEC_ID_MSZH, AV_CODEC_ID_ZLIB, AV_CODEC_ID_QTRLE, AV_CODEC_ID_TSCC, AV_CODEC_ID_ULTI, AV_CODEC_ID_QDRAW, AV_CODEC_ID_VIXL, AV_CODEC_ID_QPEG, AV_CODEC_ID_PNG, AV_CODEC_ID_PPM, AV_CODEC_ID_PBM, AV_CODEC_ID_PGM, AV_CODEC_ID_PGMYUV, AV_CODEC_ID_PAM, AV_CODEC_ID_FFVHUFF, AV_CODEC_ID_RV30, AV_CODEC_ID_RV40, AV_CODEC_ID_VC1, AV_CODEC_ID_WMV3, AV_CODEC_ID_LOCO, AV_CODEC_ID_WNV1, AV_CODEC_ID_AASC, AV_CODEC_ID_INDEO2, AV_CODEC_ID_FRAPS, AV_CODEC_ID_TRUEMOTION2, AV_CODEC_ID_BMP, AV_CODEC_ID_CSCD, AV_CODEC_ID_MMVIDEO, AV_CODEC_ID_ZMBV, AV_CODEC_ID_AVS, AV_CODEC_ID_SMACKVIDEO, AV_CODEC_ID_NUV, AV_CODEC_ID_KMVC, AV_CODEC_ID_FLASHSV, AV_CODEC_ID_CAVS, AV_CODEC_ID_JPEG2000, AV_CODEC_ID_VMNC, AV_CODEC_ID_VP5, AV_CODEC_ID_VP6, AV_CODEC_ID_VP6F, AV_CODEC_ID_TARGA, AV_CODEC_ID_DSICINVIDEO, AV_CODEC_ID_TIERTEXSEQVIDEO, AV_CODEC_ID_TIFF, AV_CODEC_ID_GIF, AV_CODEC_ID_DXA, AV_CODEC_ID_DNXHD, AV_CODEC_ID_THP, AV_CODEC_ID_SGI, AV_CODEC_ID_C93, AV_CODEC_ID_BETHSOFTVID, AV_CODEC_ID_PTX, AV_CODEC_ID_TXD, AV_CODEC_ID_VP6A, AV_CODEC_ID_AMV, AV_CODEC_ID_VB, AV_CODEC_ID_PCX, AV_CODEC_ID_SUNRAST, AV_CODEC_ID_INDEO4, AV_CODEC_ID_INDEO5, AV_CODEC_ID_MIMIC, AV_CODEC_ID_RL2, AV_CODEC_ID_ESCAPE124, AV_CODEC_ID_DIRAC, AV_CODEC_ID_BFI, AV_CODEC_ID_CMV, AV_CODEC_ID_MOTIONPIXELS, AV_CODEC_ID_TGV, AV_CODEC_ID_TGQ, AV_CODEC_ID_TQI, AV_CODEC_ID_AURA, AV_CODEC_ID_AURA2, AV_CODEC_ID_V210X, AV_CODEC_ID_TMV, AV_CODEC_ID_V210, AV_CODEC_ID_DPX, AV_CODEC_ID_MAD, AV_CODEC_ID_FRWU, AV_CODEC_ID_FLASHSV2, AV_CODEC_ID_CDGRAPHICS, AV_CODEC_ID_R210, AV_CODEC_ID_ANM, AV_CODEC_ID_BINKVIDEO, AV_CODEC_ID_IFF_ILBM, AV_CODEC_ID_IFF_BYTERUN1, AV_CODEC_ID_KGV1, AV_CODEC_ID_YOP, AV_CODEC_ID_VP8, AV_CODEC_ID_PICTOR, AV_CODEC_ID_ANSI, AV_CODEC_ID_A64_MULTI, AV_CODEC_ID_A64_MULTI5, AV_CODEC_ID_R10K, AV_CODEC_ID_MXPEG, AV_CODEC_ID_LAGARITH, AV_CODEC_ID_PRORES, AV_CODEC_ID_JV, AV_CODEC_ID_DFA, AV_CODEC_ID_WMV3IMAGE, AV_CODEC_ID_VC1IMAGE, AV_CODEC_ID_UTVIDEO, AV_CODEC_ID_BMV_VIDEO, AV_CODEC_ID_VBLE, AV_CODEC_ID_DXTORY, AV_CODEC_ID_V410, AV_CODEC_ID_XWD, AV_CODEC_ID_CDXL, AV_CODEC_ID_XBM, AV_CODEC_ID_ZEROCODEC, AV_CODEC_ID_MSS1, AV_CODEC_ID_MSA1, AV_CODEC_ID_TSCC2, AV_CODEC_ID_MTS2, AV_CODEC_ID_CLLC, AV_CODEC_ID_MSS2, AV_CODEC_ID_VP9, AV_CODEC_ID_AIC, AV_CODEC_ID_ESCAPE130_DEPRECATED, AV_CODEC_ID_G2M_DEPRECATED, AV_CODEC_ID_WEBP_DEPRECATED, AV_CODEC_ID_BRENDER_PIX = MKBETAG('B','P','I','X'), AV_CODEC_ID_Y41P = MKBETAG('Y','4','1','P'), AV_CODEC_ID_ESCAPE130 = MKBETAG('E','1','3','0'), AV_CODEC_ID_EXR = MKBETAG('0','E','X','R'), AV_CODEC_ID_AVRP = MKBETAG('A','V','R','P'), AV_CODEC_ID_012V = MKBETAG('0','1','2','V'), AV_CODEC_ID_G2M = MKBETAG( 0 ,'G','2','M'), AV_CODEC_ID_AVUI = MKBETAG('A','V','U','I'), AV_CODEC_ID_AYUV = MKBETAG('A','Y','U','V'), AV_CODEC_ID_TARGA_Y216 = MKBETAG('T','2','1','6'), AV_CODEC_ID_V308 = MKBETAG('V','3','0','8'), AV_CODEC_ID_V408 = MKBETAG('V','4','0','8'), AV_CODEC_ID_YUV4 = MKBETAG('Y','U','V','4'), AV_CODEC_ID_SANM = MKBETAG('S','A','N','M'), AV_CODEC_ID_PAF_VIDEO = MKBETAG('P','A','F','V'), AV_CODEC_ID_AVRN = MKBETAG('A','V','R','n'), AV_CODEC_ID_CPIA = MKBETAG('C','P','I','A'), AV_CODEC_ID_XFACE = MKBETAG('X','F','A','C'), AV_CODEC_ID_SGIRLE = MKBETAG('S','G','I','R'), AV_CODEC_ID_MVC1 = MKBETAG('M','V','C','1'), AV_CODEC_ID_MVC2 = MKBETAG('M','V','C','2'), AV_CODEC_ID_SNOW = MKBETAG('S','N','O','W'), AV_CODEC_ID_WEBP = MKBETAG('W','E','B','P'), AV_CODEC_ID_SMVJPEG = MKBETAG('S','M','V','J'), AV_CODEC_ID_HEVC = MKBETAG('H','2','6','5'), AV_CODEC_ID_FIRST_AUDIO = 0x10000, AV_CODEC_ID_PCM_S16LE = 0x10000, AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_U16LE, AV_CODEC_ID_PCM_U16BE, AV_CODEC_ID_PCM_S8, AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_MULAW, AV_CODEC_ID_PCM_ALAW, AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE, AV_CODEC_ID_PCM_U32LE, AV_CODEC_ID_PCM_U32BE, AV_CODEC_ID_PCM_S24LE, AV_CODEC_ID_PCM_S24BE, AV_CODEC_ID_PCM_U24LE, AV_CODEC_ID_PCM_U24BE, AV_CODEC_ID_PCM_S24DAUD, AV_CODEC_ID_PCM_ZORK, AV_CODEC_ID_PCM_S16LE_PLANAR, AV_CODEC_ID_PCM_DVD, AV_CODEC_ID_PCM_F32BE, AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F64BE, AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_BLURAY, AV_CODEC_ID_PCM_LXF, AV_CODEC_ID_S302M, AV_CODEC_ID_PCM_S8_PLANAR, AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED, AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED, AV_CODEC_ID_PCM_S24LE_PLANAR = MKBETAG(24,'P','S','P'), AV_CODEC_ID_PCM_S32LE_PLANAR = MKBETAG(32,'P','S','P'), AV_CODEC_ID_PCM_S16BE_PLANAR = MKBETAG('P','S','P',16), AV_CODEC_ID_ADPCM_IMA_QT = 0x11000, AV_CODEC_ID_ADPCM_IMA_WAV, AV_CODEC_ID_ADPCM_IMA_DK3, AV_CODEC_ID_ADPCM_IMA_DK4, AV_CODEC_ID_ADPCM_IMA_WS, AV_CODEC_ID_ADPCM_IMA_SMJPEG, AV_CODEC_ID_ADPCM_MS, AV_CODEC_ID_ADPCM_4XM, AV_CODEC_ID_ADPCM_XA, AV_CODEC_ID_ADPCM_ADX, AV_CODEC_ID_ADPCM_EA, AV_CODEC_ID_ADPCM_G726, AV_CODEC_ID_ADPCM_CT, AV_CODEC_ID_ADPCM_SWF, AV_CODEC_ID_ADPCM_YAMAHA, AV_CODEC_ID_ADPCM_SBPRO_4, AV_CODEC_ID_ADPCM_SBPRO_3, AV_CODEC_ID_ADPCM_SBPRO_2, AV_CODEC_ID_ADPCM_THP, AV_CODEC_ID_ADPCM_IMA_AMV, AV_CODEC_ID_ADPCM_EA_R1, AV_CODEC_ID_ADPCM_EA_R3, AV_CODEC_ID_ADPCM_EA_R2, AV_CODEC_ID_ADPCM_IMA_EA_SEAD, AV_CODEC_ID_ADPCM_IMA_EA_EACS, AV_CODEC_ID_ADPCM_EA_XAS, AV_CODEC_ID_ADPCM_EA_MAXIS_XA, AV_CODEC_ID_ADPCM_IMA_ISS, AV_CODEC_ID_ADPCM_G722, AV_CODEC_ID_ADPCM_IMA_APC, AV_CODEC_ID_VIMA = MKBETAG('V','I','M','A'), AV_CODEC_ID_ADPCM_AFC = MKBETAG('A','F','C',' '), AV_CODEC_ID_ADPCM_IMA_OKI = MKBETAG('O','K','I',' '), AV_CODEC_ID_ADPCM_DTK = MKBETAG('D','T','K',' '), AV_CODEC_ID_ADPCM_IMA_RAD = MKBETAG('R','A','D',' '), AV_CODEC_ID_ADPCM_G726LE = MKBETAG('6','2','7','G'), AV_CODEC_ID_AMR_NB = 0x12000, AV_CODEC_ID_AMR_WB, AV_CODEC_ID_RA_144 = 0x13000, AV_CODEC_ID_RA_288, AV_CODEC_ID_ROQ_DPCM = 0x14000, AV_CODEC_ID_INTERPLAY_DPCM, AV_CODEC_ID_XAN_DPCM, AV_CODEC_ID_SOL_DPCM, AV_CODEC_ID_MP2 = 0x15000, AV_CODEC_ID_MP3, AV_CODEC_ID_AAC, AV_CODEC_ID_AC3, AV_CODEC_ID_DTS, AV_CODEC_ID_VORBIS, AV_CODEC_ID_DVAUDIO, AV_CODEC_ID_WMAV1, AV_CODEC_ID_WMAV2, AV_CODEC_ID_MACE3, AV_CODEC_ID_MACE6, AV_CODEC_ID_VMDAUDIO, AV_CODEC_ID_FLAC, AV_CODEC_ID_MP3ADU, AV_CODEC_ID_MP3ON4, AV_CODEC_ID_SHORTEN, AV_CODEC_ID_ALAC, AV_CODEC_ID_WESTWOOD_SND1, AV_CODEC_ID_GSM, AV_CODEC_ID_QDM2, AV_CODEC_ID_COOK, AV_CODEC_ID_TRUESPEECH, AV_CODEC_ID_TTA, AV_CODEC_ID_SMACKAUDIO, AV_CODEC_ID_QCELP, AV_CODEC_ID_WAVPACK, AV_CODEC_ID_DSICINAUDIO, AV_CODEC_ID_IMC, AV_CODEC_ID_MUSEPACK7, AV_CODEC_ID_MLP, AV_CODEC_ID_GSM_MS, AV_CODEC_ID_ATRAC3, AV_CODEC_ID_APE, AV_CODEC_ID_NELLYMOSER, AV_CODEC_ID_MUSEPACK8, AV_CODEC_ID_SPEEX, AV_CODEC_ID_WMAVOICE, AV_CODEC_ID_WMAPRO, AV_CODEC_ID_WMALOSSLESS, AV_CODEC_ID_ATRAC3P, AV_CODEC_ID_EAC3, AV_CODEC_ID_SIPR, AV_CODEC_ID_MP1, AV_CODEC_ID_TWINVQ, AV_CODEC_ID_TRUEHD, AV_CODEC_ID_MP4ALS, AV_CODEC_ID_ATRAC1, AV_CODEC_ID_BINKAUDIO_RDFT, AV_CODEC_ID_BINKAUDIO_DCT, AV_CODEC_ID_AAC_LATM, AV_CODEC_ID_QDMC, AV_CODEC_ID_CELT, AV_CODEC_ID_G723_1, AV_CODEC_ID_G729, AV_CODEC_ID_8SVX_EXP, AV_CODEC_ID_8SVX_FIB, AV_CODEC_ID_BMV_AUDIO, AV_CODEC_ID_RALF, AV_CODEC_ID_IAC, AV_CODEC_ID_ILBC, AV_CODEC_ID_OPUS_DEPRECATED, AV_CODEC_ID_COMFORT_NOISE, AV_CODEC_ID_TAK_DEPRECATED, AV_CODEC_ID_METASOUND, AV_CODEC_ID_FFWAVESYNTH = MKBETAG('F','F','W','S'), AV_CODEC_ID_SONIC = MKBETAG('S','O','N','C'), AV_CODEC_ID_SONIC_LS = MKBETAG('S','O','N','L'), AV_CODEC_ID_PAF_AUDIO = MKBETAG('P','A','F','A'), AV_CODEC_ID_OPUS = MKBETAG('O','P','U','S'), AV_CODEC_ID_TAK = MKBETAG('t','B','a','K'), AV_CODEC_ID_EVRC = MKBETAG('s','e','v','c'), AV_CODEC_ID_SMV = MKBETAG('s','s','m','v'), AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, AV_CODEC_ID_DVD_SUBTITLE = 0x17000, AV_CODEC_ID_DVB_SUBTITLE, AV_CODEC_ID_TEXT, AV_CODEC_ID_XSUB, AV_CODEC_ID_SSA, AV_CODEC_ID_MOV_TEXT, AV_CODEC_ID_HDMV_PGS_SUBTITLE, AV_CODEC_ID_DVB_TELETEXT, AV_CODEC_ID_SRT, AV_CODEC_ID_MICRODVD = MKBETAG('m','D','V','D'), AV_CODEC_ID_EIA_608 = MKBETAG('c','6','0','8'), AV_CODEC_ID_JACOSUB = MKBETAG('J','S','U','B'), AV_CODEC_ID_SAMI = MKBETAG('S','A','M','I'), AV_CODEC_ID_REALTEXT = MKBETAG('R','T','X','T'), AV_CODEC_ID_SUBVIEWER1 = MKBETAG('S','b','V','1'), AV_CODEC_ID_SUBVIEWER = MKBETAG('S','u','b','V'), AV_CODEC_ID_SUBRIP = MKBETAG('S','R','i','p'), AV_CODEC_ID_WEBVTT = MKBETAG('W','V','T','T'), AV_CODEC_ID_MPL2 = MKBETAG('M','P','L','2'), AV_CODEC_ID_VPLAYER = MKBETAG('V','P','l','r'), AV_CODEC_ID_PJS = MKBETAG('P','h','J','S'), AV_CODEC_ID_ASS = MKBETAG('A','S','S',' '), AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, AV_CODEC_ID_TTF = 0x18000, AV_CODEC_ID_BINTEXT = MKBETAG('B','T','X','T'), AV_CODEC_ID_XBIN = MKBETAG('X','B','I','N'), AV_CODEC_ID_IDF = MKBETAG( 0 ,'I','D','F'), AV_CODEC_ID_OTF = MKBETAG( 0 ,'O','T','F'), AV_CODEC_ID_SMPTE_KLV = MKBETAG('K','L','V','A'), AV_CODEC_ID_DVD_NAV = MKBETAG('D','N','A','V'), AV_CODEC_ID_PROBE = 0x19000, AV_CODEC_ID_MPEG2TS = 0x20000, AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, AV_CODEC_ID_FFMETADATA = 0x21000 }
	Identify the syntax and semantics of the bitstream. More...

enum	AVColorPrimaries { AVCOL_PRI_BT709 = 1, AVCOL_PRI_UNSPECIFIED = 2, AVCOL_PRI_BT470M = 4, AVCOL_PRI_BT470BG = 5, AVCOL_PRI_SMPTE170M = 6, AVCOL_PRI_SMPTE240M = 7, AVCOL_PRI_FILM = 8, AVCOL_PRI_NB }

enum	AVColorTransferCharacteristic { AVCOL_TRC_BT709 = 1, AVCOL_TRC_UNSPECIFIED = 2, AVCOL_TRC_GAMMA22 = 4, AVCOL_TRC_GAMMA28 = 5, AVCOL_TRC_SMPTE240M = 7, AVCOL_TRC_NB }

enum	AVChromaLocation { AVCHROMA_LOC_UNSPECIFIED = 0, AVCHROMA_LOC_LEFT = 1, AVCHROMA_LOC_CENTER = 2, AVCHROMA_LOC_TOPLEFT = 3, AVCHROMA_LOC_TOP = 4, AVCHROMA_LOC_BOTTOMLEFT = 5, AVCHROMA_LOC_BOTTOM = 6, AVCHROMA_LOC_NB }
	X X 3 4 X X are luma samples, 1 2 1-6 are possible chroma positions X X 5 6 X 0 is undefined/unknown position. More...

enum	AVAudioServiceType { AV_AUDIO_SERVICE_TYPE_MAIN = 0, AV_AUDIO_SERVICE_TYPE_EFFECTS = 1, AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2, AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3, AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4, AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5, AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6, AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7, AV_AUDIO_SERVICE_TYPE_KARAOKE = 8, AV_AUDIO_SERVICE_TYPE_NB }

enum	AVFieldOrder { AV_FIELD_UNKNOWN, AV_FIELD_PROGRESSIVE, AV_FIELD_TT, AV_FIELD_BB, AV_FIELD_TB, AV_FIELD_BT }

enum	AVSubtitleType { SUBTITLE_NONE, SUBTITLE_BITMAP, SUBTITLE_TEXT, SUBTITLE_ASS }

Functions
AVRational	av_codec_get_pkt_timebase (const AVCodecContext *avctx)

void	av_codec_set_pkt_timebase (AVCodecContext *avctx, AVRational val)

const AVCodecDescriptor *	av_codec_get_codec_descriptor (const AVCodecContext *avctx)

void	av_codec_set_codec_descriptor (AVCodecContext avctx, const AVCodecDescriptor desc)

int	av_codec_get_lowres (const AVCodecContext *avctx)

void	av_codec_set_lowres (AVCodecContext *avctx, int val)

int	av_codec_get_seek_preroll (const AVCodecContext *avctx)

void	av_codec_set_seek_preroll (AVCodecContext *avctx, int val)

int	av_codec_get_max_lowres (const AVCodec *codec)

AVCodec *	av_codec_next (const AVCodec *c)
	If c is NULL, returns the first registered codec, if c is non-NULL, returns the next registered codec after c, or NULL if c is the last one.

unsigned	avcodec_version (void)
	Return the LIBAVCODEC_VERSION_INT constant.

const char *	avcodec_configuration (void)
	Return the libavcodec build-time configuration.

const char *	avcodec_license (void)
	Return the libavcodec license.

void	avcodec_register (AVCodec *codec)
	Register the codec codec and initialize libavcodec.

void	avcodec_register_all (void)
	Register all the codecs, parsers and bitstream filters which were enabled at configuration time.

AVCodecContext *	avcodec_alloc_context3 (const AVCodec *codec)
	Allocate an AVCodecContext and set its fields to default values.

int	avcodec_get_context_defaults3 (AVCodecContext s, const AVCodec codec)
	Set the fields of the given AVCodecContext to default values corresponding to the given codec (defaults may be codec-dependent).

const AVClass *	avcodec_get_class (void)
	Get the AVClass for AVCodecContext.

const AVClass *	avcodec_get_frame_class (void)
	Get the AVClass for AVFrame.

const AVClass *	avcodec_get_subtitle_rect_class (void)
	Get the AVClass for AVSubtitleRect.

int	avcodec_copy_context (AVCodecContext dest, const AVCodecContext src)
	Copy the settings of the source AVCodecContext into the destination AVCodecContext.

AVFrame *	avcodec_alloc_frame (void)
	Allocate an AVFrame and set its fields to default values.

void	avcodec_get_frame_defaults (AVFrame *frame)
	Set the fields of the given AVFrame to default values.

void	avcodec_free_frame (AVFrame **frame)
	Free the frame and any dynamically allocated objects in it, e.g.

int	avcodec_open2 (AVCodecContext avctx, const AVCodec codec, AVDictionary **options)
	Initialize the AVCodecContext to use the given AVCodec.

int	avcodec_close (AVCodecContext *avctx)
	Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext itself).

void	avsubtitle_free (AVSubtitle *sub)
	Free all allocated data in the given subtitle struct.

Detailed Description

Basic definitions, functions for querying libavcodec capabilities, allocating core structures, etc.

Macro Definition Documentation

#define AV_CODEC_PROP_INTRA_ONLY (1 << 0)

Codec uses only intra compression.

Video codecs only.

Definition at line 550 of file avcodec.h.

Referenced by is_intra_only(), and show_codecs().

#define AV_CODEC_PROP_LOSSY (1 << 1)

Codec supports lossy compression.

Audio and video codecs only.

Note: a codec may support both lossy and lossless compression modes

Definition at line 556 of file avcodec.h.

Referenced by show_codecs().

#define AV_CODEC_PROP_LOSSLESS (1 << 2)

Codec supports lossless compression.

Audio and video codecs only.

Definition at line 560 of file avcodec.h.

Referenced by show_codecs().

#define AV_CODEC_PROP_BITMAP_SUB (1 << 16)

Subtitle codec is bitmap based Decoded AVSubtitle data can be read from the AVSubtitleRect->pict field.

Definition at line 565 of file avcodec.h.

Referenced by avcodec_decode_subtitle2(), and avcodec_open2().

#define AV_CODEC_PROP_TEXT_SUB (1 << 17)

Subtitle codec is text based.

Decoded AVSubtitle data can be read from the AVSubtitleRect->ass field.

Definition at line 570 of file avcodec.h.

Referenced by avcodec_decode_subtitle2().

#define FF_MAX_B_FRAMES 16

Definition at line 680 of file avcodec.h.

#define CODEC_FLAG_UNALIGNED 0x0001

Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e.g.

due to cropping).

Definition at line 691 of file avcodec.h.

Referenced by ff_h264_decode_seq_parameter_set(), and ff_hevc_decode_nal_sps().

#define CODEC_FLAG_QSCALE 0x0002

Use fixed qscale.

Definition at line 692 of file avcodec.h.

Referenced by aac_encode_frame(), aac_encode_init(), config(), config_props(), encode_frame(), encode_init(), encode_picture(), estimate_best_b_count(), Faac_encode_init(), ff_MPV_encode_init(), lame_window_init(), libschroedinger_encode_init(), mp3lame_encode_init(), new_output_stream(), oggvorbis_init_encoder(), parse_ffconfig(), twolame_encode_init(), vorbis_encode_init(), and xvid_encode_init().

#define CODEC_FLAG_4MV 0x0004

4 MV per MB allowed / advanced prediction for H.263.

Definition at line 693 of file avcodec.h.

Referenced by config_props(), encode_init(), ff_estimate_p_frame_motion(), ff_fix_long_p_mvs(), ff_MPV_encode_init(), parse_ffconfig(), and xvid_encode_init().

#define CODEC_FLAG_QPEL 0x0010

Use qpel MC.

Definition at line 694 of file avcodec.h.

Referenced by config_props(), encode_frame(), encode_init(), encode_q_branch(), estimate_best_b_count(), ff_init_me(), ff_MPV_encode_init(), get_flags(), and xvid_encode_init().

#define CODEC_FLAG_GMC 0x0020

Use GMC.

Definition at line 695 of file avcodec.h.

Referenced by xvid_encode_init().

#define CODEC_FLAG_MV0 0x0040

Always try a MB with MV=<0,0>.

Definition at line 696 of file avcodec.h.

Referenced by epzs_motion_search_internal(), ff_estimate_b_frame_motion(), and ff_estimate_p_frame_motion().

#define CODEC_FLAG_INPUT_PRESERVED 0x0100

The parent program guarantees that the input for B-frames containing streams is not written to for at least s->max_b_frames+1 frames, if this is not set the input will be copied.

Definition at line 702 of file avcodec.h.

Referenced by estimate_best_b_count(), and ff_thread_video_encode_frame().

#define CODEC_FLAG_PASS1 0x0200

Use internal 2pass ratecontrol in first pass mode.

Definition at line 703 of file avcodec.h.

Referenced by avcodec_encode_video2(), avcodec_string(), encode_422_bitstream(), encode_bgra_bitstream(), encode_frame(), encode_gray_bitstream(), encode_init(), encode_line(), encode_thread(), ff_h263_encode_mb(), ff_mpeg4_encode_mb(), ff_MPV_encode_picture(), new_video_stream(), transcode_init(), vp8_encode(), vpx_init(), write_slice_end(), X264_init(), XAVS_init(), and xvid_encode_init().

#define CODEC_FLAG_PASS2 0x0400

Use internal 2pass ratecontrol in second pass mode.

Definition at line 704 of file avcodec.h.

Referenced by avcodec_string(), encode_frame(), encode_init(), encode_picture(), ff_MPV_encode_init(), ff_rate_control_init(), ff_rate_control_uninit(), ff_rate_estimate_qscale(), new_video_stream(), select_input_picture(), transcode_init(), vpx_init(), X264_init(), XAVS_init(), and xvid_encode_init().

#define CODEC_FLAG_GRAY 0x2000

Only decode/encode grayscale.

Definition at line 705 of file avcodec.h.

Referenced by apply_8x8(), apply_obmc(), backup_mb_border(), comp_block(), dct_get(), decode_frame(), decode_slice(), decode_slice_thread(), dnxhd_decode_macroblock(), encode_mb_internal(), encode_slice_data(), ff_h264_filter_mb(), ff_mspel_motion(), ff_wmv2_add_mb(), ff_xvmc_decode_mb(), gmc1_motion(), gmc_motion(), h264_filter_mb_fast_internal(), hl_decode_mb(), hl_decode_mb_444(), idct_put(), mc_dir_part(), mpeg_motion_internal(), mpeg_motion_lowres(), MPV_decode_mb_internal(), MPV_motion_lowres(), qpel_motion(), render_slice(), svq1_decode_frame(), svq3_mc_dir_part(), tgq_idct_put_mb(), tgq_idct_put_mb_dconly(), tqi_idct_put(), unpack_dct_coeffs(), vble_decode_frame(), vc1_decode_b_mb(), vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_init(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), vc1_decode_p_mb_intfr(), vc1_interp_mc(), vc1_mc_1mv(), vc1_mc_4mv_chroma(), vc1_mc_4mv_chroma4(), vc1_smooth_overlap_filter_iblk(), xchg_mb_border(), and xvid_encode_init().

#define CODEC_FLAG_EMU_EDGE 0x4000

Don't draw edges.

Definition at line 706 of file avcodec.h.

Referenced by add_input_streams(), amv_encode_picture(), apply_8x8(), chroma_4mv_motion(), decode_b(), decode_frame(), decode_init(), dirac_decode_init(), ff_draw_horiz_band(), ff_mjpeg_decode_frame(), ff_MPV_frame_end(), ff_rv34_decode_init(), ff_snow_frame_start(), ff_vp8_decode_frame(), hpel_motion(), intra_predict(), load_input_picture(), mjpeg_decode_scan(), stream_component_open(), update_frame_pool(), vc1_decode_init(), video_get_buffer(), vp8_decode_mb_row_no_filter(), wmv2_decode_init(), and wmv9_init().

#define CODEC_FLAG_PSNR 0x8000

error[?] variables will be set during encoding.

Definition at line 707 of file avcodec.h.

Referenced by do_video_stats(), encode_frame(), encode_thread(), estimate_best_b_count(), MPV_decode_mb_internal(), new_video_stream(), print_report(), vpx_init(), X264_init(), and XAVS_init().

#define CODEC_FLAG_TRUNCATED

Value:

0x00010000 /** Input bitstream might be truncated at a random

location instead of only at frame boundaries. */

Examples:: doc/examples/decoding_encoding.c.

Definition at line 708 of file avcodec.h.

Referenced by ff_h263_decode_frame(), get_consumed_bytes(), mpeg_decode_frame(), validate_thread_parameters(), and video_decode_example().

#define CODEC_FLAG_NORMALIZE_AQP 0x00020000

Normalize adaptive quantization.

Definition at line 709 of file avcodec.h.

Referenced by adaptive_quantization().

#define CODEC_FLAG_INTERLACED_DCT 0x00040000

Use interlaced DCT.

Definition at line 710 of file avcodec.h.

Referenced by dnxhd_encode_init(), do_video_out(), dv_guess_dct_mode(), encode_frame(), encode_init(), encode_mb_internal(), ff_dnxhd_find_cid(), ff_MPV_encode_init(), X264_init(), and XAVS_init().

#define CODEC_FLAG_LOW_DELAY 0x00080000

Force low delay.

Definition at line 711 of file avcodec.h.

Referenced by config(), config_props(), decode_vop_header(), ff_mpeg4_decode_picture_header(), ff_MPV_encode_init(), h264_set_parameter_from_sps(), mpeg1_decode_sequence(), mpeg_decode_sequence_extension(), validate_thread_parameters(), and vc1_decode_frame().

#define CODEC_FLAG_GLOBAL_HEADER 0x00400000

Place global headers in extradata instead of every keyframe.

Examples:: doc/examples/muxing.c.

Definition at line 712 of file avcodec.h.

Referenced by aac_encode_init(), aacPlus_encode_init(), add_stream(), av_parser_change(), encode_init(), Faac_encode_init(), ff_mpeg4_encode_picture_header(), ffm2_read_header(), ffm_read_header(), ffm_write_header(), init_muxer(), new_output_stream(), remove_extradata(), X264_init(), XAVS_init(), and xvid_encode_init().

#define CODEC_FLAG_BITEXACT 0x00800000

Use only bitexact stuff (except (I)DCT).

Definition at line 713 of file avcodec.h.

Referenced by aac_decode_init(), aac_encode_frame(), ac3_decode_init(), atrac1_decode_init(), atrac3_decode_init(), configure_input_video_filter(), dca_decode_init(), decode_init(), dsp_init(), dsputil_init_mmxext(), dsputil_init_sse2(), encode_frame(), encode_init(), ff_ac3_encode_init(), ff_dct_common_init(), ff_dsputil_init_pix_mmx(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_ppc(), ff_fmt_convert_init_x86(), ff_framehash_write_header(), ff_MPV_common_init_x86(), ff_proresdsp_x86_init(), ff_twinvq_decode_init(), ff_vp3dsp_init_bfin(), ff_vp3dsp_init_x86(), ff_wma_init(), flac_write_header(), get_cox(), hadamard_func(), hpeldsp_init_3dnow(), hpeldsp_init_mmxext(), imc_decode_init(), init_muxer(), jpeg_put_comments(), main(), mkv_write_attachments(), mkv_write_header(), mov_write_udta_tag(), mp3_write_xing(), mp3lame_encode_init(), mpeg4_encode_vol_header(), mxf_write_header(), mxf_write_identification(), ogg_write_header(), oggvorbis_encode_init(), parse_ffconfig(), ra288_decode_init(), rtp_write_header(), vorbis_decode_init(), and vp3_decode_init().

#define CODEC_FLAG_AC_PRED 0x01000000

H.263 advanced intra coding / MPEG-4 AC prediction.

Definition at line 715 of file avcodec.h.

Referenced by ff_mpeg4_encode_mb(), ff_MPV_encode_init(), and xvid_encode_init().

#define CODEC_FLAG_LOOP_FILTER 0x00000800

loop filter

Definition at line 716 of file avcodec.h.

Referenced by ff_MPV_encode_init(), and X264_init().

#define CODEC_FLAG_INTERLACED_ME 0x20000000

interlaced motion estimation

Definition at line 717 of file avcodec.h.

Referenced by do_video_out(), encode_init(), encode_picture(), ff_estimate_b_frame_motion(), ff_estimate_p_frame_motion(), ff_MPV_encode_init(), init_context_frame(), and libschroedinger_encode_init().

#define CODEC_FLAG_CLOSED_GOP 0x80000000

Definition at line 718 of file avcodec.h.

Referenced by ff_MPV_encode_init(), libschroedinger_encode_init(), mpeg1_encode_sequence_header(), mpeg4_encode_gop_header(), select_input_picture(), X264_init(), and xvid_encode_init().

#define CODEC_FLAG2_FAST 0x00000001

Allow non spec compliant speedup tricks.

Definition at line 719 of file avcodec.h.

Referenced by decode_slice_header(), ff_h264_decode_nal(), mpeg_decode_mb(), and stream_component_open().

#define CODEC_FLAG2_NO_OUTPUT 0x00000004

Skip bitstream encoding.

Definition at line 720 of file avcodec.h.

Referenced by encode_422_bitstream(), encode_bgra_bitstream(), encode_frame(), encode_gray_bitstream(), ff_h263_encode_motion_vector(), and mpeg4_encode_blocks().

#define CODEC_FLAG2_LOCAL_HEADER 0x00000008

Place global headers at every keyframe instead of in extradata.

Definition at line 721 of file avcodec.h.

Referenced by av_parser_change(), dump_extradata(), and remove_extradata().

#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000

timecode is in drop frame format. DEPRECATED!!!!

Definition at line 722 of file avcodec.h.

Referenced by encode_init(), and mov_parse_stsd_data().

#define CODEC_FLAG2_IGNORE_CROP 0x00010000

Discard cropping information from SPS.

Definition at line 723 of file avcodec.h.

Referenced by decode_vui(), ff_h264_decode_seq_parameter_set(), and ff_hevc_decode_nal_sps().

#define CODEC_FLAG2_CHUNKS 0x00008000

Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.

Definition at line 725 of file avcodec.h.

Referenced by decode_frame(), decode_nal_units(), and validate_thread_parameters().

#define CODEC_FLAG2_SHOW_ALL 0x00400000

Show all frames before the first keyframe.

Definition at line 726 of file avcodec.h.

Referenced by decode_chunks(), decode_frame(), and decode_nal_units().

#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001

Decoder can use draw_horiz_band callback.

Definition at line 735 of file avcodec.h.

Referenced by ff_MPV_frame_end(), and print_codecs().

#define CODEC_CAP_DR1 0x0002

Codec uses get_buffer() for allocating buffers and supports custom allocators.

If not set, it might not use get_buffer() at all or use operations that assume the buffer was allocated by avcodec_default_get_buffer.

Definition at line 741 of file avcodec.h.

Referenced by avcodec_decode_video2(), print_codecs(), and stream_component_open().

#define CODEC_CAP_TRUNCATED 0x0008

Examples:: doc/examples/decoding_encoding.c.

Definition at line 742 of file avcodec.h.

Referenced by video_decode_example().

#define CODEC_CAP_HWACCEL 0x0010

Definition at line 744 of file avcodec.h.

#define CODEC_CAP_DELAY 0x0020

Encoder or decoder requires flushing with NULL input at the end in order to give the complete and correct output.

NOTE: If this flag is not set, the codec is guaranteed to never be fed with with NULL data. The user can still send NULL data to the public encode or decode function, but libavcodec will not pass it along to the codec unless this flag is set.

Decoders: The decoder has a non-zero delay and needs to be fed with avpkt->data=NULL, avpkt->size=0 at the end to get the delayed data until the decoder no longer returns frames.

Encoders: The encoder needs to be fed with NULL data at the end of encoding until the encoder no longer returns data.

NOTE: For encoders implementing the AVCodec.encode2() function, setting this flag also means that the encoder must set the pts and duration for each output packet. If this flag is not set, the pts and duration will be determined by libavcodec from the input frame.

Definition at line 768 of file avcodec.h.

Referenced by avcodec_decode_audio4(), avcodec_decode_subtitle2(), avcodec_decode_video2(), avcodec_encode_audio2(), avcodec_encode_video2(), do_video_out(), mpeg12_class(), and submit_packet().

#define CODEC_CAP_SMALL_LAST_FRAME 0x0040

Codec can be fed a final frame with a smaller size.

This can be used to prevent truncation of the last audio samples.

Definition at line 773 of file avcodec.h.

Referenced by avcodec_encode_audio2().

#define CODEC_CAP_SUBFRAMES 0x0100

Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time, demuxers which do not do are connected to a parser to split what they return into proper frames.

This flag is reserved to the very rare category of codecs which have a bitstream that cannot be split into frames without timeconsuming operations like full decoding. Demuxers carring such bitstreams thus may return multiple frames in a packet. This has many disadvantages like prohibiting stream copy in many cases thus it should only be considered as a last resort.

Definition at line 791 of file avcodec.h.

#define CODEC_CAP_EXPERIMENTAL 0x0200

Codec is experimental and is thus avoided in favor of non experimental encoders.

Definition at line 796 of file avcodec.h.

Referenced by avcodec_open2(), find_encdec(), and print_codecs().

#define CODEC_CAP_CHANNEL_CONF 0x0400

Codec should fill in channel configuration and samplerate instead of container.

Definition at line 800 of file avcodec.h.

Referenced by try_decode_frame().

#define CODEC_CAP_NEG_LINESIZES 0x0800

Codec is able to deal with negative linesizes.

Definition at line 805 of file avcodec.h.

#define CODEC_CAP_FRAME_THREADS 0x1000

Codec supports frame-level multithreading.

Definition at line 810 of file avcodec.h.

Referenced by print_codec(), print_codecs(), and validate_thread_parameters().

#define CODEC_CAP_SLICE_THREADS 0x2000

Codec supports slice-based (or partition-based) multithreading.

Definition at line 814 of file avcodec.h.

Referenced by mpeg12_class(), print_codec(), print_codecs(), and validate_thread_parameters().

#define CODEC_CAP_PARAM_CHANGE 0x4000

Codec supports changed parameters at any point.

Definition at line 818 of file avcodec.h.

Referenced by apply_param_change(), and reap_filters().

#define CODEC_CAP_AUTO_THREADS 0x8000

Codec supports avctx->thread_count == 0 (auto).

Definition at line 822 of file avcodec.h.

Referenced by avcodec_open2(), and validate_thread_parameters().

#define CODEC_CAP_VARIABLE_FRAME_SIZE 0x10000

Audio encoder supports receiving a different number of samples in each call.

Examples:: doc/examples/muxing.c.

Definition at line 826 of file avcodec.h.

Referenced by avcodec_encode_audio2(), decode_audio(), and open_audio().

#define CODEC_CAP_INTRA_ONLY 0x40000000

Codec is intra only.

Definition at line 830 of file avcodec.h.

Referenced by ff_frame_thread_encoder_init().

#define CODEC_CAP_LOSSLESS 0x80000000

Codec is lossless.

Definition at line 834 of file avcodec.h.

Referenced by choose_sample_fmt().

#define MB_TYPE_INTRA4x4 0x0001

Definition at line 837 of file avcodec.h.

Referenced by ff_er_frame_end(), and svq3_decode_mb().

#define MB_TYPE_INTRA16x16 0x0002

Definition at line 838 of file avcodec.h.

Referenced by decode_cabac_intra_mb_type(), rv34_decode_intra_mb_header(), and svq3_decode_mb().

#define MB_TYPE_INTRA_PCM 0x0004

Definition at line 839 of file avcodec.h.

Referenced by decode_cabac_intra_mb_type().

#define MB_TYPE_16x16 0x0008

#define MB_TYPE_16x8 0x0010

Definition at line 841 of file avcodec.h.

Referenced by ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_mpeg4_set_direct_mv(), fill_decode_caches(), get_dct8x8_allowed(), mpeg4_decode_mb(), mpeg_decode_mb(), pred_spatial_direct_motion(), and pred_temp_direct_motion().

#define MB_TYPE_8x16 0x0020

Definition at line 842 of file avcodec.h.

Referenced by filter_mb_dir(), get_dct8x8_allowed(), pred_spatial_direct_motion(), and pred_temp_direct_motion().

#define MB_TYPE_8x8 0x0040

Definition at line 843 of file avcodec.h.

Referenced by ff_h263_decode_mb(), ff_h263_update_motion_val(), ff_mpeg4_set_direct_mv(), fill_decode_caches(), get_dct8x8_allowed(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), pred_spatial_direct_motion(), pred_temp_direct_motion(), and preview_obmc().

#define MB_TYPE_INTERLACED 0x0080

Definition at line 844 of file avcodec.h.

Referenced by decode_mb_skip(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_mpeg4_set_direct_mv(), mpeg4_decode_mb(), mpeg_decode_mb(), pred_spatial_direct_motion(), and pred_temp_direct_motion().

#define MB_TYPE_DIRECT2 0x0100

Definition at line 845 of file avcodec.h.

Referenced by decode_cabac_mb_ref(), decode_mb_skip(), ff_mpeg4_set_direct_mv(), fill_decode_caches(), get_dct8x8_allowed(), mpeg4_decode_mb(), pred_spatial_direct_motion(), and pred_temp_direct_motion().

#define MB_TYPE_ACPRED 0x0200

Definition at line 846 of file avcodec.h.

Referenced by ff_h263_decode_mb(), mpeg4_decode_mb(), and mpeg4_decode_partition_b().

#define MB_TYPE_GMC 0x0400

Definition at line 847 of file avcodec.h.

Referenced by mpeg4_decode_mb(), and mpeg4_decode_partition_a().

#define MB_TYPE_SKIP 0x0800

Definition at line 848 of file avcodec.h.

Referenced by decode_mb_skip(), ff_h263_decode_mb(), ff_h264_decode_mb_cabac(), fill_decode_caches(), h261_decode_mb_skipped(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg_decode_mb(), msmpeg4v12_decode_mb(), msmpeg4v34_decode_mb(), parse_mb_skip(), preview_obmc(), svq3_decode_mb(), vc1_decode_b_mb_intfr(), vc1_decode_p_mb(), and vc1_decode_p_mb_intfr().

#define MB_TYPE_P0L0 0x1000

Definition at line 849 of file avcodec.h.

Referenced by decode_mb_skip(), and pred_temp_direct_motion().

#define MB_TYPE_P1L0 0x2000

Definition at line 850 of file avcodec.h.

Referenced by decode_mb_skip(), and pred_spatial_direct_motion().

#define MB_TYPE_P0L1 0x4000

Definition at line 851 of file avcodec.h.

Referenced by pred_temp_direct_motion().

#define MB_TYPE_P1L1 0x8000

Definition at line 852 of file avcodec.h.

Referenced by pred_spatial_direct_motion().

#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)

Definition at line 853 of file avcodec.h.

Referenced by ff_er_frame_end(), ff_h263_decode_mb(), ff_h263_update_motion_val(), h261_decode_mb(), h261_decode_mb_skipped(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg_decode_mb(), msmpeg4v12_decode_mb(), msmpeg4v34_decode_mb(), parse_mb_skip(), pred_spatial_direct_motion(), preview_obmc(), and rv34_pred_mv_b().

#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)

Definition at line 854 of file avcodec.h.

Referenced by rv34_pred_mv_b().

#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)

Definition at line 855 of file avcodec.h.

Referenced by decode_mb_skip(), ff_mpeg4_set_direct_mv(), mpeg4_decode_mb(), mpeg_decode_mb(), pred_spatial_direct_motion(), and pred_temp_direct_motion().

#define MB_TYPE_QUANT 0x00010000

Definition at line 856 of file avcodec.h.

Referenced by mpeg_decode_mb().

#define MB_TYPE_CBP 0x00020000

Definition at line 857 of file avcodec.h.

Referenced by mpeg_decode_mb().

#define FF_QSCALE_TYPE_MPEG1 0

Definition at line 889 of file avcodec.h.

Referenced by ff_h263_decode_frame(), ff_mjpeg_decode_frame(), finish_frame(), norm_qscale(), and rv10_decode_frame().

#define FF_QSCALE_TYPE_MPEG2 1

Definition at line 890 of file avcodec.h.

Referenced by norm_qscale(), and slice_end().

#define FF_QSCALE_TYPE_H264 2

Definition at line 891 of file avcodec.h.

Referenced by norm_qscale().

#define FF_QSCALE_TYPE_VP56 3

Definition at line 892 of file avcodec.h.

Referenced by norm_qscale().

#define AV_GET_BUFFER_FLAG_REF (1 << 0)

The decoder will keep a reference to the frame and may reuse it later.

Definition at line 909 of file avcodec.h.

Referenced by alloc_frame(), alloc_frame_buffer(), alloc_picture(), cdg_decode_frame(), cmv_decode_frame(), copy_frame(), decode_frame(), decode_p_frame(), decode_pic(), decode_thread(), dirac_decode_data_unit(), dirac_decode_picture_header(), encode_init(), escape124_decode_frame(), execute_code(), ff_mjpeg_decode_sof(), ff_snow_common_init_after_header(), ff_snow_frame_start(), ff_vp56_decode_frame(), get_buffer(), get_buffer_internal(), ipvideo_decode_frame(), mimic_decode_frame(), mss2_decode_frame(), mxpeg_decode_frame(), reget_buffer_internal(), svq1_decode_frame(), tgv_decode_frame(), vmdvideo_decode_frame(), vp8_alloc_frame(), vp9_decode_frame(), xan_decode_frame(), and zerocodec_decode_frame().

#define AV_SUBTITLE_FLAG_FORCED 0x00000001

Definition at line 3147 of file avcodec.h.

Referenced by decode_dvd_subtitles(), and display_end_segment().

Enumeration Type Documentation

enum AVCodecID

Identify the syntax and semantics of the bitstream.

The principle is roughly: Two decoders with the same ID can decode the same streams. Two encoders with the same ID can encode compatible streams. There may be slight deviations from the principle due to implementation details.

If you add a codec ID to this list, add it so that

no value of a existing codec ID changes (that would break ABI),
Give it a value which when taken as ASCII is recognized uniquely by a human as this specific codec. This ensures that 2 forks can independently add AVCodecIDs without producing conflicts.

After adding new codec IDs, do not forget to add an entry to the codec descriptor list and bump libavcodec minor version.

Enumerator:

AV_CODEC_ID_NONE
AV_CODEC_ID_MPEG1VIDEO
AV_CODEC_ID_MPEG2VIDEO	preferred ID for MPEG-1/2 video decoding
AV_CODEC_ID_MPEG2VIDEO_XVMC
AV_CODEC_ID_H261
AV_CODEC_ID_H263
AV_CODEC_ID_RV10
AV_CODEC_ID_RV20
AV_CODEC_ID_MJPEG
AV_CODEC_ID_MJPEGB
AV_CODEC_ID_LJPEG
AV_CODEC_ID_SP5X
AV_CODEC_ID_JPEGLS
AV_CODEC_ID_MPEG4
AV_CODEC_ID_RAWVIDEO
AV_CODEC_ID_MSMPEG4V1
AV_CODEC_ID_MSMPEG4V2
AV_CODEC_ID_MSMPEG4V3
AV_CODEC_ID_WMV1
AV_CODEC_ID_WMV2
AV_CODEC_ID_H263P
AV_CODEC_ID_H263I
AV_CODEC_ID_FLV1
AV_CODEC_ID_SVQ1
AV_CODEC_ID_SVQ3
AV_CODEC_ID_DVVIDEO
AV_CODEC_ID_HUFFYUV
AV_CODEC_ID_CYUV
AV_CODEC_ID_H264
AV_CODEC_ID_INDEO3
AV_CODEC_ID_VP3
AV_CODEC_ID_THEORA
AV_CODEC_ID_ASV1
AV_CODEC_ID_ASV2
AV_CODEC_ID_FFV1
AV_CODEC_ID_4XM
AV_CODEC_ID_VCR1
AV_CODEC_ID_CLJR
AV_CODEC_ID_MDEC
AV_CODEC_ID_ROQ
AV_CODEC_ID_INTERPLAY_VIDEO
AV_CODEC_ID_XAN_WC3
AV_CODEC_ID_XAN_WC4
AV_CODEC_ID_RPZA
AV_CODEC_ID_CINEPAK
AV_CODEC_ID_WS_VQA
AV_CODEC_ID_MSRLE
AV_CODEC_ID_MSVIDEO1
AV_CODEC_ID_IDCIN
AV_CODEC_ID_8BPS
AV_CODEC_ID_SMC
AV_CODEC_ID_FLIC
AV_CODEC_ID_TRUEMOTION1
AV_CODEC_ID_VMDVIDEO
AV_CODEC_ID_MSZH
AV_CODEC_ID_ZLIB
AV_CODEC_ID_QTRLE
AV_CODEC_ID_TSCC
AV_CODEC_ID_ULTI
AV_CODEC_ID_QDRAW
AV_CODEC_ID_VIXL
AV_CODEC_ID_QPEG
AV_CODEC_ID_PNG
AV_CODEC_ID_PPM
AV_CODEC_ID_PBM
AV_CODEC_ID_PGM
AV_CODEC_ID_PGMYUV
AV_CODEC_ID_PAM
AV_CODEC_ID_FFVHUFF
AV_CODEC_ID_RV30
AV_CODEC_ID_RV40
AV_CODEC_ID_VC1
AV_CODEC_ID_WMV3
AV_CODEC_ID_LOCO
AV_CODEC_ID_WNV1
AV_CODEC_ID_AASC
AV_CODEC_ID_INDEO2
AV_CODEC_ID_FRAPS
AV_CODEC_ID_TRUEMOTION2
AV_CODEC_ID_BMP
AV_CODEC_ID_CSCD
AV_CODEC_ID_MMVIDEO
AV_CODEC_ID_ZMBV
AV_CODEC_ID_AVS
AV_CODEC_ID_SMACKVIDEO
AV_CODEC_ID_NUV
AV_CODEC_ID_KMVC
AV_CODEC_ID_FLASHSV
AV_CODEC_ID_CAVS
AV_CODEC_ID_JPEG2000
AV_CODEC_ID_VMNC
AV_CODEC_ID_VP5
AV_CODEC_ID_VP6
AV_CODEC_ID_VP6F
AV_CODEC_ID_TARGA
AV_CODEC_ID_DSICINVIDEO
AV_CODEC_ID_TIERTEXSEQVIDEO
AV_CODEC_ID_TIFF
AV_CODEC_ID_GIF
AV_CODEC_ID_DXA
AV_CODEC_ID_DNXHD
AV_CODEC_ID_THP
AV_CODEC_ID_SGI
AV_CODEC_ID_C93
AV_CODEC_ID_BETHSOFTVID
AV_CODEC_ID_PTX
AV_CODEC_ID_TXD
AV_CODEC_ID_VP6A
AV_CODEC_ID_AMV
AV_CODEC_ID_VB
AV_CODEC_ID_PCX
AV_CODEC_ID_SUNRAST
AV_CODEC_ID_INDEO4
AV_CODEC_ID_INDEO5
AV_CODEC_ID_MIMIC
AV_CODEC_ID_RL2
AV_CODEC_ID_ESCAPE124
AV_CODEC_ID_DIRAC
AV_CODEC_ID_BFI
AV_CODEC_ID_CMV
AV_CODEC_ID_MOTIONPIXELS
AV_CODEC_ID_TGV
AV_CODEC_ID_TGQ
AV_CODEC_ID_TQI
AV_CODEC_ID_AURA
AV_CODEC_ID_AURA2
AV_CODEC_ID_V210X
AV_CODEC_ID_TMV
AV_CODEC_ID_V210
AV_CODEC_ID_DPX
AV_CODEC_ID_MAD
AV_CODEC_ID_FRWU
AV_CODEC_ID_FLASHSV2
AV_CODEC_ID_CDGRAPHICS
AV_CODEC_ID_R210
AV_CODEC_ID_ANM
AV_CODEC_ID_BINKVIDEO
AV_CODEC_ID_IFF_ILBM
AV_CODEC_ID_IFF_BYTERUN1
AV_CODEC_ID_KGV1
AV_CODEC_ID_YOP
AV_CODEC_ID_VP8
AV_CODEC_ID_PICTOR
AV_CODEC_ID_ANSI
AV_CODEC_ID_A64_MULTI
AV_CODEC_ID_A64_MULTI5
AV_CODEC_ID_R10K
AV_CODEC_ID_MXPEG
AV_CODEC_ID_LAGARITH
AV_CODEC_ID_PRORES
AV_CODEC_ID_JV
AV_CODEC_ID_DFA
AV_CODEC_ID_WMV3IMAGE
AV_CODEC_ID_VC1IMAGE
AV_CODEC_ID_UTVIDEO
AV_CODEC_ID_BMV_VIDEO
AV_CODEC_ID_VBLE
AV_CODEC_ID_DXTORY
AV_CODEC_ID_V410
AV_CODEC_ID_XWD
AV_CODEC_ID_CDXL
AV_CODEC_ID_XBM
AV_CODEC_ID_ZEROCODEC
AV_CODEC_ID_MSS1
AV_CODEC_ID_MSA1
AV_CODEC_ID_TSCC2
AV_CODEC_ID_MTS2
AV_CODEC_ID_CLLC
AV_CODEC_ID_MSS2
AV_CODEC_ID_VP9
AV_CODEC_ID_AIC
AV_CODEC_ID_ESCAPE130_DEPRECATED
AV_CODEC_ID_G2M_DEPRECATED
AV_CODEC_ID_WEBP_DEPRECATED
AV_CODEC_ID_BRENDER_PIX
AV_CODEC_ID_Y41P
AV_CODEC_ID_ESCAPE130
AV_CODEC_ID_EXR
AV_CODEC_ID_AVRP
AV_CODEC_ID_012V
AV_CODEC_ID_G2M
AV_CODEC_ID_AVUI
AV_CODEC_ID_AYUV
AV_CODEC_ID_TARGA_Y216
AV_CODEC_ID_V308
AV_CODEC_ID_V408
AV_CODEC_ID_YUV4
AV_CODEC_ID_SANM
AV_CODEC_ID_PAF_VIDEO
AV_CODEC_ID_AVRN
AV_CODEC_ID_CPIA
AV_CODEC_ID_XFACE
AV_CODEC_ID_SGIRLE
AV_CODEC_ID_MVC1
AV_CODEC_ID_MVC2
AV_CODEC_ID_SNOW
AV_CODEC_ID_WEBP
AV_CODEC_ID_SMVJPEG
AV_CODEC_ID_HEVC
AV_CODEC_ID_FIRST_AUDIO	A dummy id pointing at the start of audio codecs.
AV_CODEC_ID_PCM_S16LE
AV_CODEC_ID_PCM_S16BE
AV_CODEC_ID_PCM_U16LE
AV_CODEC_ID_PCM_U16BE
AV_CODEC_ID_PCM_S8
AV_CODEC_ID_PCM_U8
AV_CODEC_ID_PCM_MULAW
AV_CODEC_ID_PCM_ALAW
AV_CODEC_ID_PCM_S32LE
AV_CODEC_ID_PCM_S32BE
AV_CODEC_ID_PCM_U32LE
AV_CODEC_ID_PCM_U32BE
AV_CODEC_ID_PCM_S24LE
AV_CODEC_ID_PCM_S24BE
AV_CODEC_ID_PCM_U24LE
AV_CODEC_ID_PCM_U24BE
AV_CODEC_ID_PCM_S24DAUD
AV_CODEC_ID_PCM_ZORK
AV_CODEC_ID_PCM_S16LE_PLANAR
AV_CODEC_ID_PCM_DVD
AV_CODEC_ID_PCM_F32BE
AV_CODEC_ID_PCM_F32LE
AV_CODEC_ID_PCM_F64BE
AV_CODEC_ID_PCM_F64LE
AV_CODEC_ID_PCM_BLURAY
AV_CODEC_ID_PCM_LXF
AV_CODEC_ID_S302M
AV_CODEC_ID_PCM_S8_PLANAR
AV_CODEC_ID_PCM_S24LE_PLANAR_DEPRECATED
AV_CODEC_ID_PCM_S32LE_PLANAR_DEPRECATED
AV_CODEC_ID_PCM_S24LE_PLANAR
AV_CODEC_ID_PCM_S32LE_PLANAR
AV_CODEC_ID_PCM_S16BE_PLANAR
AV_CODEC_ID_ADPCM_IMA_QT
AV_CODEC_ID_ADPCM_IMA_WAV
AV_CODEC_ID_ADPCM_IMA_DK3
AV_CODEC_ID_ADPCM_IMA_DK4
AV_CODEC_ID_ADPCM_IMA_WS
AV_CODEC_ID_ADPCM_IMA_SMJPEG
AV_CODEC_ID_ADPCM_MS
AV_CODEC_ID_ADPCM_4XM
AV_CODEC_ID_ADPCM_XA
AV_CODEC_ID_ADPCM_ADX
AV_CODEC_ID_ADPCM_EA
AV_CODEC_ID_ADPCM_G726
AV_CODEC_ID_ADPCM_CT
AV_CODEC_ID_ADPCM_SWF
AV_CODEC_ID_ADPCM_YAMAHA
AV_CODEC_ID_ADPCM_SBPRO_4
AV_CODEC_ID_ADPCM_SBPRO_3
AV_CODEC_ID_ADPCM_SBPRO_2
AV_CODEC_ID_ADPCM_THP
AV_CODEC_ID_ADPCM_IMA_AMV
AV_CODEC_ID_ADPCM_EA_R1
AV_CODEC_ID_ADPCM_EA_R3
AV_CODEC_ID_ADPCM_EA_R2
AV_CODEC_ID_ADPCM_IMA_EA_SEAD
AV_CODEC_ID_ADPCM_IMA_EA_EACS
AV_CODEC_ID_ADPCM_EA_XAS
AV_CODEC_ID_ADPCM_EA_MAXIS_XA
AV_CODEC_ID_ADPCM_IMA_ISS
AV_CODEC_ID_ADPCM_G722
AV_CODEC_ID_ADPCM_IMA_APC
AV_CODEC_ID_VIMA
AV_CODEC_ID_ADPCM_AFC
AV_CODEC_ID_ADPCM_IMA_OKI
AV_CODEC_ID_ADPCM_DTK
AV_CODEC_ID_ADPCM_IMA_RAD
AV_CODEC_ID_ADPCM_G726LE
AV_CODEC_ID_AMR_NB
AV_CODEC_ID_AMR_WB
AV_CODEC_ID_RA_144
AV_CODEC_ID_RA_288
AV_CODEC_ID_ROQ_DPCM
AV_CODEC_ID_INTERPLAY_DPCM
AV_CODEC_ID_XAN_DPCM
AV_CODEC_ID_SOL_DPCM
AV_CODEC_ID_MP2
AV_CODEC_ID_MP3	preferred ID for decoding MPEG audio layer 1, 2 or 3
AV_CODEC_ID_AAC
AV_CODEC_ID_AC3
AV_CODEC_ID_DTS
AV_CODEC_ID_VORBIS
AV_CODEC_ID_DVAUDIO
AV_CODEC_ID_WMAV1
AV_CODEC_ID_WMAV2
AV_CODEC_ID_MACE3
AV_CODEC_ID_MACE6
AV_CODEC_ID_VMDAUDIO
AV_CODEC_ID_FLAC
AV_CODEC_ID_MP3ADU
AV_CODEC_ID_MP3ON4
AV_CODEC_ID_SHORTEN
AV_CODEC_ID_ALAC
AV_CODEC_ID_WESTWOOD_SND1
AV_CODEC_ID_GSM	as in Berlin toast format
AV_CODEC_ID_QDM2
AV_CODEC_ID_COOK
AV_CODEC_ID_TRUESPEECH
AV_CODEC_ID_TTA
AV_CODEC_ID_SMACKAUDIO
AV_CODEC_ID_QCELP
AV_CODEC_ID_WAVPACK
AV_CODEC_ID_DSICINAUDIO
AV_CODEC_ID_IMC
AV_CODEC_ID_MUSEPACK7
AV_CODEC_ID_MLP
AV_CODEC_ID_GSM_MS
AV_CODEC_ID_ATRAC3
AV_CODEC_ID_APE
AV_CODEC_ID_NELLYMOSER
AV_CODEC_ID_MUSEPACK8
AV_CODEC_ID_SPEEX
AV_CODEC_ID_WMAVOICE
AV_CODEC_ID_WMAPRO
AV_CODEC_ID_WMALOSSLESS
AV_CODEC_ID_ATRAC3P
AV_CODEC_ID_EAC3
AV_CODEC_ID_SIPR
AV_CODEC_ID_MP1
AV_CODEC_ID_TWINVQ
AV_CODEC_ID_TRUEHD
AV_CODEC_ID_MP4ALS
AV_CODEC_ID_ATRAC1
AV_CODEC_ID_BINKAUDIO_RDFT
AV_CODEC_ID_BINKAUDIO_DCT
AV_CODEC_ID_AAC_LATM
AV_CODEC_ID_QDMC
AV_CODEC_ID_CELT
AV_CODEC_ID_G723_1
AV_CODEC_ID_G729
AV_CODEC_ID_8SVX_EXP
AV_CODEC_ID_8SVX_FIB
AV_CODEC_ID_BMV_AUDIO
AV_CODEC_ID_RALF
AV_CODEC_ID_IAC
AV_CODEC_ID_ILBC
AV_CODEC_ID_OPUS_DEPRECATED
AV_CODEC_ID_COMFORT_NOISE
AV_CODEC_ID_TAK_DEPRECATED
AV_CODEC_ID_METASOUND
AV_CODEC_ID_FFWAVESYNTH
AV_CODEC_ID_SONIC
AV_CODEC_ID_SONIC_LS
AV_CODEC_ID_PAF_AUDIO
AV_CODEC_ID_OPUS
AV_CODEC_ID_TAK
AV_CODEC_ID_EVRC
AV_CODEC_ID_SMV
AV_CODEC_ID_FIRST_SUBTITLE	A dummy ID pointing at the start of subtitle codecs.
AV_CODEC_ID_DVD_SUBTITLE
AV_CODEC_ID_DVB_SUBTITLE
AV_CODEC_ID_TEXT	raw UTF-8 text
AV_CODEC_ID_XSUB
AV_CODEC_ID_SSA
AV_CODEC_ID_MOV_TEXT
AV_CODEC_ID_HDMV_PGS_SUBTITLE
AV_CODEC_ID_DVB_TELETEXT
AV_CODEC_ID_SRT
AV_CODEC_ID_MICRODVD
AV_CODEC_ID_EIA_608
AV_CODEC_ID_JACOSUB
AV_CODEC_ID_SAMI
AV_CODEC_ID_REALTEXT
AV_CODEC_ID_SUBVIEWER1
AV_CODEC_ID_SUBVIEWER
AV_CODEC_ID_SUBRIP
AV_CODEC_ID_WEBVTT
AV_CODEC_ID_MPL2
AV_CODEC_ID_VPLAYER
AV_CODEC_ID_PJS
AV_CODEC_ID_ASS	ASS as defined in Matroska.
AV_CODEC_ID_FIRST_UNKNOWN	A dummy ID pointing at the start of various fake codecs.
AV_CODEC_ID_TTF
AV_CODEC_ID_BINTEXT
AV_CODEC_ID_XBIN
AV_CODEC_ID_IDF
AV_CODEC_ID_OTF
AV_CODEC_ID_SMPTE_KLV
AV_CODEC_ID_DVD_NAV
AV_CODEC_ID_PROBE	codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it
AV_CODEC_ID_MPEG2TS	FAKE codec to indicate a raw MPEG-2 TS stream (only used by libavformat)
AV_CODEC_ID_MPEG4SYSTEMS	FAKE codec to indicate a MPEG-4 Systems stream (only used by libavformat)
AV_CODEC_ID_FFMETADATA	Dummy codec for streams containing only metadata information.

Definition at line 102 of file avcodec.h.

enum AVColorPrimaries

Enumerator:

AVCOL_PRI_BT709	also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
AVCOL_PRI_UNSPECIFIED
AVCOL_PRI_BT470M
AVCOL_PRI_BT470BG	also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
AVCOL_PRI_SMPTE170M	also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
AVCOL_PRI_SMPTE240M	functionally identical to above
AVCOL_PRI_FILM
AVCOL_PRI_NB	Not part of ABI.

Definition at line 621 of file avcodec.h.

enum AVColorTransferCharacteristic

Enumerator:

AVCOL_TRC_BT709	also ITU-R BT1361
AVCOL_TRC_UNSPECIFIED
AVCOL_TRC_GAMMA22	also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
AVCOL_TRC_GAMMA28	also ITU-R BT470BG
AVCOL_TRC_SMPTE240M
AVCOL_TRC_NB	Not part of ABI.

Definition at line 632 of file avcodec.h.

enum AVChromaLocation

X X 3 4 X X are luma samples, 1 2 1-6 are possible chroma positions X X 5 6 X 0 is undefined/unknown position.

Enumerator:

AVCHROMA_LOC_UNSPECIFIED
AVCHROMA_LOC_LEFT	mpeg2/4, h264 default
AVCHROMA_LOC_CENTER	mpeg1, jpeg, h263
AVCHROMA_LOC_TOPLEFT	DV.
AVCHROMA_LOC_TOP
AVCHROMA_LOC_BOTTOMLEFT
AVCHROMA_LOC_BOTTOM
AVCHROMA_LOC_NB	Not part of ABI.

Definition at line 646 of file avcodec.h.

enum AVAudioServiceType

Enumerator:

AV_AUDIO_SERVICE_TYPE_MAIN
AV_AUDIO_SERVICE_TYPE_EFFECTS
AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED
AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED
AV_AUDIO_SERVICE_TYPE_DIALOGUE
AV_AUDIO_SERVICE_TYPE_COMMENTARY
AV_AUDIO_SERVICE_TYPE_EMERGENCY
AV_AUDIO_SERVICE_TYPE_VOICE_OVER
AV_AUDIO_SERVICE_TYPE_KARAOKE
AV_AUDIO_SERVICE_TYPE_NB	Not part of ABI.

Definition at line 657 of file avcodec.h.

enum AVFieldOrder

Enumerator:

AV_FIELD_UNKNOWN
AV_FIELD_PROGRESSIVE
AV_FIELD_TT
AV_FIELD_BB
AV_FIELD_TB
AV_FIELD_BT

Definition at line 1127 of file avcodec.h.

enum AVSubtitleType

Enumerator:

SUBTITLE_NONE
SUBTITLE_BITMAP	A bitmap, pict will be set.
SUBTITLE_TEXT	Plain text, the text field must be set by the decoder and is authoritative. ass and pict fields may contain approximations.
SUBTITLE_ASS	Formatted text, the ass field must be set by the decoder and is authoritative. pict and text fields may contain approximations.

Definition at line 3129 of file avcodec.h.

Function Documentation

AVRational av_codec_get_pkt_timebase ( const AVCodecContext * avctx )

void av_codec_set_pkt_timebase	(	AVCodecContext *	avctx,
		AVRational	val
	)

Referenced by avpriv_set_pts_info().

const AVCodecDescriptor* av_codec_get_codec_descriptor ( const AVCodecContext * avctx )

Referenced by is_intra_only().

void av_codec_set_codec_descriptor	(	AVCodecContext *	avctx,
		const AVCodecDescriptor *	desc
	)

Referenced by is_intra_only().

int av_codec_get_lowres ( const AVCodecContext * avctx )

Referenced by add_input_streams().

void av_codec_set_lowres	(	AVCodecContext *	avctx,
		int	val
	)

Referenced by stream_component_open().

int av_codec_get_seek_preroll ( const AVCodecContext * avctx )

void av_codec_set_seek_preroll	(	AVCodecContext *	avctx,
		int	val
	)

Referenced by matroska_read_header().

int av_codec_get_max_lowres ( const AVCodec * codec )

Definition at line 1097 of file utils.c.

Referenced by stream_component_open().

AVCodec* av_codec_next ( const AVCodec * c )

If c is NULL, returns the first registered codec, if c is non-NULL, returns the next registered codec after c, or NULL if c is the last one.

Definition at line 185 of file utils.c.

Referenced by codec_child_class_next(), next_codec_for_id(), and show_codec_opts().

unsigned avcodec_version ( void )

Return the LIBAVCODEC_VERSION_INT constant.

Definition at line 2828 of file utils.c.

const char* avcodec_configuration ( void )

Return the libavcodec build-time configuration.

Definition at line 2845 of file utils.c.

const char* avcodec_license ( void )

Return the libavcodec license.

Definition at line 2850 of file utils.c.

void avcodec_register ( AVCodec * codec )

Register the codec codec and initialize libavcodec.

Warning: either this function or avcodec_register_all() must be called before any other libavcodec functions.

See Also: avcodec_register_all()

Definition at line 215 of file utils.c.

void avcodec_register_all ( void )

Register all the codecs, parsers and bitstream filters which were enabled at configuration time.

If you do not call this function you can select exactly which formats you want to support, by using the individual registration functions.

See Also: avcodec_register; av_register_codec_parser; av_register_bitstream_filter

Definition at line 67 of file allcodecs.c.

Referenced by av_register_all(), and main().

AVCodecContext* avcodec_alloc_context3 ( const AVCodec * codec )

Allocate an AVCodecContext and set its fields to default values.

The resulting struct can be deallocated by calling avcodec_close() on it followed by av_free().

Parameters

codec if non-NULL, allocate private data and initialize defaults for the given codec. It is illegal to then call avcodec_open2() with a different codec. If NULL, then the codec-specific defaults won't be initialized, which may result in suboptimal default settings (this is important mainly for encoders, e.g. libx264).

Returns: An AVCodecContext filled with default values or NULL on failure.

See Also: avcodec_get_context_defaults

Examples:: doc/examples/decoding_encoding.c.

Definition at line 151 of file options.c.

Referenced by add_av_stream1(), add_codec(), audio_decode_example(), audio_encode_example(), avformat_new_stream(), config(), config_input(), config_props(), estimate_best_b_count(), ff_frame_thread_encoder_init(), ff_mov_init_hinting(), init(), main(), mov_create_chapter_track(), mov_create_timecode_track(), smvjpeg_decode_init(), video_decode_example(), and video_encode_example().

int avcodec_get_context_defaults3	(	AVCodecContext *	s,
		const AVCodec *	codec
	)

Set the fields of the given AVCodecContext to default values corresponding to the given codec (defaults may be codec-dependent).

Do not call this function if a non-NULL codec has been passed to avcodec_alloc_context3() that allocated this AVCodecContext. If codec is non-NULL, it is illegal to call avcodec_open2() with a different codec on this AVCodecContext.

Definition at line 97 of file options.c.

Referenced by avcodec_alloc_context3(), new_output_stream(), and parse_ffconfig().

const AVClass* avcodec_get_class ( void )

Get the AVClass for AVCodecContext.

It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.

See Also: av_opt_find().

Definition at line 247 of file options.c.

Referenced by filter_codec_opts(), open_input_file(), open_output_file(), opt_default(), show_codec_opts(), and show_help_default().

const AVClass* avcodec_get_frame_class ( void )

Get the AVClass for AVFrame.

It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.

See Also: av_opt_find().

Definition at line 274 of file options.c.

Referenced by decode_video().

const AVClass* avcodec_get_subtitle_rect_class ( void )

Get the AVClass for AVSubtitleRect.

It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.

See Also: av_opt_find().

Definition at line 299 of file options.c.

int avcodec_copy_context	(	AVCodecContext *	dest,
		const AVCodecContext *	src
	)

Copy the settings of the source AVCodecContext into the destination AVCodecContext.

The resulting destination codec context will be unopened, i.e. you are required to call avcodec_open2() before you can use this AVCodecContext to decode/encode video/audio data.

Parameters

dest	target codec context, should be initialized with avcodec_alloc_context3(NULL), but otherwise uninitialized
src	source codec context

Returns: AVERROR() on error (e.g. memory allocation error), 0 on success

Definition at line 185 of file options.c.

Referenced by concat_read_header(), ff_rtp_chain_mux_open(), hls_mux_init(), hls_read_header(), http_receive_data(), ism_write_header(), libquvi_read_header(), mpegts_write_header(), open_slave(), read_ffserver_streams(), sap_fetch_packet(), sap_read_header(), segment_mux_init(), and write_packet().

AVFrame* avcodec_alloc_frame ( void )

Allocate an AVFrame and set its fields to default values.

The resulting struct must be freed using avcodec_free_frame().

Returns: An AVFrame filled with default values or NULL on failure.

See Also: avcodec_get_frame_defaults

Examples:: doc/examples/decoding_encoding.c, doc/examples/demuxing.c, and doc/examples/muxing.c.

Definition at line 1072 of file utils.c.

Referenced by audio_decode_example(), audio_decode_frame(), audio_encode_example(), avui_encode_init(), config(), decode_audio(), encode_init(), ff_load_image(), ffv1_common_init(), libopenjpeg_encode_init(), main(), open_video(), pad_last_frame(), prores_encode_init(), reap_filters(), svq1_decode_init(), try_decode_frame(), utvideo_decode_init(), utvideo_encode_init(), v308_encode_init(), v408_encode_init(), v410_encode_init(), video_decode_example(), video_encode_example(), vpx_init(), write_audio_frame(), xface_encode_init(), y41p_encode_init(), and yuv4_encode_init().

void avcodec_get_frame_defaults ( AVFrame * frame )

Set the fields of the given AVFrame to default values.

Parameters

frame The AVFrame of which the fields should be set to default values.

Examples:: doc/examples/decoding_encoding.c, doc/examples/filtering_audio.c, and doc/examples/filtering_video.c.

Definition at line 1047 of file utils.c.

Referenced by audio_decode_example(), audio_decode_frame(), avcodec_decode_audio4(), avcodec_decode_video2(), decode_init(), decode_update_thread_context(), ff_find_unused_picture(), ff_h264_alloc_tables(), ff_MPV_common_init(), main(), raw_init_encoder(), reap_filters(), try_decode_frame(), and video_thread().

void avcodec_free_frame ( AVFrame ** frame )

Free the frame and any dynamically allocated objects in it, e.g.

extended_data.

Parameters

frame frame to be freed. The pointer will be set to NULL.

Warning: this function does NOT free the data buffers themselves (it does not know how, since they might have been allocated with a custom get_buffer()).

Examples:: doc/examples/decoding_encoding.c, and doc/examples/muxing.c.

Definition at line 1077 of file utils.c.

Referenced by audio_decode_example(), audio_encode_example(), ffmpeg_cleanup(), try_decode_frame(), video_decode_example(), video_encode_example(), and write_audio_frame().

int avcodec_open2	(	AVCodecContext *	avctx,
		const AVCodec *	codec,
		AVDictionary **	options
	)

Initialize the AVCodecContext to use the given AVCodec.

Prior to using this function the context has to be allocated with avcodec_alloc_context3().

The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for retrieving a codec.

Warning: This function is not thread safe!

avcodec_register_all();
av_dict_set(&opts, "b", "2.5M", 0);
codec = avcodec_find_decoder(AV_CODEC_ID_H264);
if (!codec)
    exit(1);
context = avcodec_alloc_context3(codec);
if (avcodec_open2(context, codec, opts) < 0)
    exit(1);

Parameters

avctx	The context to initialize.
codec	The codec to open this context for. If a non-NULL codec has been previously passed to avcodec_alloc_context3() or avcodec_get_context_defaults3() for this context, then this parameter MUST be either NULL or equal to the previously passed codec.
options	A dictionary filled with AVCodecContext and codec-private options. On return this object will be filled with options that were not found.

Returns: zero on success, a negative value on error

See Also: avcodec_alloc_context3(), avcodec_find_decoder(), avcodec_find_encoder(), av_dict_set(), av_opt_find().

Examples:: doc/examples/decoding_encoding.c, doc/examples/demuxing.c, doc/examples/filtering_audio.c, doc/examples/filtering_video.c, and doc/examples/muxing.c.

Definition at line 1150 of file utils.c.

Referenced by audio_decode_example(), audio_encode_example(), avformat_find_stream_info(), config(), config_props(), estimate_best_b_count(), ff_codec_open2_recursive(), ff_frame_thread_encoder_init(), ff_load_image(), init_input_stream(), open_audio(), open_codec_context(), open_input_file(), open_stream(), open_video(), stream_component_open(), try_decode_frame(), video_decode_example(), video_encode_example(), and wrap().

int avcodec_close ( AVCodecContext * avctx )

Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext itself).

Calling this function on an AVCodecContext that hasn't been opened will free the codec-specific data allocated in avcodec_alloc_context3() / avcodec_get_context_defaults3() with a non-NULL codec. Subsequent calls will do nothing.

Examples:: doc/examples/decoding_encoding.c, doc/examples/demuxing.c, doc/examples/filtering_audio.c, doc/examples/filtering_video.c, and doc/examples/muxing.c.

Definition at line 2518 of file utils.c.

Referenced by audio_decode_example(), audio_encode_example(), avformat_find_stream_info(), close_audio(), close_connection(), close_input_file(), close_video(), estimate_best_b_count(), ff_codec_close_recursive(), ff_load_image(), main(), movie_uninit(), stream_component_close(), transcode(), uninit(), video_decode_example(), video_encode_example(), and worker().

void avsubtitle_free ( AVSubtitle * sub )

Free all allocated data in the given subtitle struct.

Parameters

sub	AVSubtitle to free.

Definition at line 2487 of file utils.c.

Referenced by avcodec_decode_subtitle2(), ffmpeg_cleanup(), free_subpicture(), subtitle_thread(), and transcode_subtitles().

Modules

Data Structures

Macros

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