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FFmpeg
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Basic definitions, functions for querying libavcodec capabilities, allocating core structures, etc. More...
Modules | |
| AVPacket | |
| Types and functions for working with AVPacket. | |
| AVHWAccel | |
| AVPicture | |
| Functions for working with AVPicture. | |
Classes | |
| 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 | AVCPBProperties |
| This structure describes the bitrate properties of an encoded bitstream. More... | |
| struct | AVCodecContext |
| main external API structure. More... | |
| struct | AVProfile |
| AVProfile. More... | |
| struct | AVCodecHWConfig |
| struct | AVCodec |
| AVCodec. More... | |
| struct | AVSubtitleRect |
| struct | AVSubtitle |
| struct | AVCodecParameters |
| This struct describes the properties of an encoded stream. More... | |
Macros | |
| #define | AV_CODEC_PROP_INTRA_ONLY (1 << 0) |
| Codec uses only intra compression. More... | |
| #define | AV_CODEC_PROP_LOSSY (1 << 1) |
| Codec supports lossy compression. More... | |
| #define | AV_CODEC_PROP_LOSSLESS (1 << 2) |
| Codec supports lossless compression. More... | |
| #define | AV_CODEC_PROP_REORDER (1 << 3) |
| Codec supports frame reordering. More... | |
| #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. More... | |
| #define | AV_CODEC_FLAG_UNALIGNED (1 << 0) |
| Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e.g. More... | |
| #define | AV_CODEC_FLAG_QSCALE (1 << 1) |
| Use fixed qscale. | |
| #define | AV_CODEC_FLAG_4MV (1 << 2) |
| 4 MV per MB allowed / advanced prediction for H.263. | |
| #define | AV_CODEC_FLAG_OUTPUT_CORRUPT (1 << 3) |
| Output even those frames that might be corrupted. | |
| #define | AV_CODEC_FLAG_QPEL (1 << 4) |
| Use qpel MC. | |
| #define | AV_CODEC_FLAG_PASS1 (1 << 9) |
| Use internal 2pass ratecontrol in first pass mode. | |
| #define | AV_CODEC_FLAG_PASS2 (1 << 10) |
| Use internal 2pass ratecontrol in second pass mode. | |
| #define | AV_CODEC_FLAG_LOOP_FILTER (1 << 11) |
| loop filter. | |
| #define | AV_CODEC_FLAG_GRAY (1 << 13) |
| Only decode/encode grayscale. | |
| #define | AV_CODEC_FLAG_PSNR (1 << 15) |
| error[?] variables will be set during encoding. | |
| #define | AV_CODEC_FLAG_TRUNCATED (1 << 16) |
| Input bitstream might be truncated at a random location instead of only at frame boundaries. | |
| #define | AV_CODEC_FLAG_INTERLACED_DCT (1 << 18) |
| Use interlaced DCT. | |
| #define | AV_CODEC_FLAG_LOW_DELAY (1 << 19) |
| Force low delay. | |
| #define | AV_CODEC_FLAG_GLOBAL_HEADER (1 << 22) |
| Place global headers in extradata instead of every keyframe. | |
| #define | AV_CODEC_FLAG_BITEXACT (1 << 23) |
| Use only bitexact stuff (except (I)DCT). | |
| #define | AV_CODEC_FLAG_AC_PRED (1 << 24) |
| H.263 advanced intra coding / MPEG-4 AC prediction. | |
| #define | AV_CODEC_FLAG_INTERLACED_ME (1 << 29) |
| interlaced motion estimation | |
| #define | AV_CODEC_FLAG_CLOSED_GOP (1U << 31) |
| #define | AV_CODEC_FLAG2_FAST (1 << 0) |
| Allow non spec compliant speedup tricks. | |
| #define | AV_CODEC_FLAG2_NO_OUTPUT (1 << 2) |
| Skip bitstream encoding. | |
| #define | AV_CODEC_FLAG2_LOCAL_HEADER (1 << 3) |
| Place global headers at every keyframe instead of in extradata. | |
| #define | AV_CODEC_FLAG2_DROP_FRAME_TIMECODE (1 << 13) |
| timecode is in drop frame format. More... | |
| #define | AV_CODEC_FLAG2_CHUNKS (1 << 15) |
| Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. | |
| #define | AV_CODEC_FLAG2_IGNORE_CROP (1 << 16) |
| Discard cropping information from SPS. | |
| #define | AV_CODEC_FLAG2_SHOW_ALL (1 << 22) |
| Show all frames before the first keyframe. | |
| #define | AV_CODEC_FLAG2_EXPORT_MVS (1 << 28) |
| Export motion vectors through frame side data. | |
| #define | AV_CODEC_FLAG2_SKIP_MANUAL (1 << 29) |
| Do not skip samples and export skip information as frame side data. | |
| #define | AV_CODEC_FLAG2_RO_FLUSH_NOOP (1 << 30) |
| Do not reset ASS ReadOrder field on flush (subtitles decoding) | |
| #define | AV_CODEC_CAP_DRAW_HORIZ_BAND (1 << 0) |
| Decoder can use draw_horiz_band callback. | |
| #define | AV_CODEC_CAP_DR1 (1 << 1) |
| Codec uses get_buffer() for allocating buffers and supports custom allocators. More... | |
| #define | AV_CODEC_CAP_TRUNCATED (1 << 3) |
| #define | AV_CODEC_CAP_DELAY (1 << 5) |
| Encoder or decoder requires flushing with NULL input at the end in order to give the complete and correct output. More... | |
| #define | AV_CODEC_CAP_SMALL_LAST_FRAME (1 << 6) |
| Codec can be fed a final frame with a smaller size. More... | |
| #define | AV_CODEC_CAP_SUBFRAMES (1 << 8) |
| 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. More... | |
| #define | AV_CODEC_CAP_EXPERIMENTAL (1 << 9) |
| Codec is experimental and is thus avoided in favor of non experimental encoders. | |
| #define | AV_CODEC_CAP_CHANNEL_CONF (1 << 10) |
| Codec should fill in channel configuration and samplerate instead of container. | |
| #define | AV_CODEC_CAP_FRAME_THREADS (1 << 12) |
| Codec supports frame-level multithreading. | |
| #define | AV_CODEC_CAP_SLICE_THREADS (1 << 13) |
| Codec supports slice-based (or partition-based) multithreading. | |
| #define | AV_CODEC_CAP_PARAM_CHANGE (1 << 14) |
| Codec supports changed parameters at any point. | |
| #define | AV_CODEC_CAP_AUTO_THREADS (1 << 15) |
| Codec supports avctx->thread_count == 0 (auto). | |
| #define | AV_CODEC_CAP_VARIABLE_FRAME_SIZE (1 << 16) |
| Audio encoder supports receiving a different number of samples in each call. | |
| #define | AV_CODEC_CAP_AVOID_PROBING (1 << 17) |
| Decoder is not a preferred choice for probing. More... | |
| #define | AV_CODEC_CAP_INTRA_ONLY 0x40000000 |
| Codec is intra only. | |
| #define | AV_CODEC_CAP_LOSSLESS 0x80000000 |
| Codec is lossless. | |
| #define | AV_CODEC_CAP_HARDWARE (1 << 18) |
| Codec is backed by a hardware implementation. More... | |
| #define | AV_CODEC_CAP_HYBRID (1 << 19) |
| Codec is potentially backed by a hardware implementation, but not necessarily. More... | |
| #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 |
Typedefs | |
| typedef struct AVCodecDescriptor | AVCodecDescriptor |
| This struct describes the properties of a single codec described by an AVCodecID. More... | |
| typedef struct AVPanScan | AVPanScan |
| Pan Scan area. More... | |
| typedef struct AVCPBProperties | AVCPBProperties |
| This structure describes the bitrate properties of an encoded bitstream. More... | |
| typedef struct AVCodecContext | AVCodecContext |
| main external API structure. More... | |
| typedef struct AVProfile | AVProfile |
| AVProfile. | |
| typedef struct AVCodecHWConfig | AVCodecHWConfig |
| typedef struct AVCodecDefault | AVCodecDefault |
| typedef struct AVCodec | AVCodec |
| AVCodec. | |
| typedef struct AVSubtitleRect | AVSubtitleRect |
| typedef struct AVSubtitle | AVSubtitle |
| typedef struct AVCodecParameters | AVCodecParameters |
| This struct describes the properties of an encoded stream. More... | |
Enumerations | |
| enum | AVCodecID { AV_CODEC_ID_NONE, AV_CODEC_ID_MPEG1VIDEO, AV_CODEC_ID_MPEG2VIDEO, 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_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, AV_CODEC_ID_G2M, AV_CODEC_ID_WEBP, AV_CODEC_ID_HNM4_VIDEO, AV_CODEC_ID_HEVC, AV_CODEC_ID_FIC, AV_CODEC_ID_ALIAS_PIX, AV_CODEC_ID_BRENDER_PIX, AV_CODEC_ID_PAF_VIDEO, AV_CODEC_ID_EXR, AV_CODEC_ID_VP7, AV_CODEC_ID_SANM, AV_CODEC_ID_SGIRLE, AV_CODEC_ID_MVC1, AV_CODEC_ID_MVC2, AV_CODEC_ID_HQX, AV_CODEC_ID_TDSC, AV_CODEC_ID_HQ_HQA, AV_CODEC_ID_HAP, AV_CODEC_ID_DDS, AV_CODEC_ID_DXV, AV_CODEC_ID_SCREENPRESSO, AV_CODEC_ID_RSCC, AV_CODEC_ID_Y41P = 0x8000, AV_CODEC_ID_AVRP, AV_CODEC_ID_012V, 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_AVRN, AV_CODEC_ID_CPIA, AV_CODEC_ID_XFACE, AV_CODEC_ID_SNOW, AV_CODEC_ID_SMVJPEG, AV_CODEC_ID_APNG, AV_CODEC_ID_DAALA, AV_CODEC_ID_CFHD, AV_CODEC_ID_TRUEMOTION2RT, AV_CODEC_ID_M101, AV_CODEC_ID_MAGICYUV, AV_CODEC_ID_SHEERVIDEO, AV_CODEC_ID_YLC, AV_CODEC_ID_PSD, AV_CODEC_ID_PIXLET, AV_CODEC_ID_SPEEDHQ, AV_CODEC_ID_FMVC, AV_CODEC_ID_SCPR, AV_CODEC_ID_CLEARVIDEO, AV_CODEC_ID_XPM, AV_CODEC_ID_AV1, AV_CODEC_ID_BITPACKED, AV_CODEC_ID_MSCC, AV_CODEC_ID_SRGC, AV_CODEC_ID_SVG, AV_CODEC_ID_GDV, AV_CODEC_ID_FITS, 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, AV_CODEC_ID_PCM_S32LE_PLANAR, AV_CODEC_ID_PCM_S16BE_PLANAR, AV_CODEC_ID_PCM_S64LE = 0x10800, AV_CODEC_ID_PCM_S64BE, AV_CODEC_ID_PCM_F16LE, AV_CODEC_ID_PCM_F24LE, 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_ADPCM_VIMA, AV_CODEC_ID_ADPCM_AFC = 0x11800, 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_ADPCM_THP_LE, AV_CODEC_ID_ADPCM_PSX, AV_CODEC_ID_ADPCM_AICA, AV_CODEC_ID_ADPCM_IMA_DAT4, AV_CODEC_ID_ADPCM_MTAF, 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_SDX2_DPCM = 0x14800, AV_CODEC_ID_GREMLIN_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, AV_CODEC_ID_COMFORT_NOISE, AV_CODEC_ID_TAK, AV_CODEC_ID_METASOUND, AV_CODEC_ID_PAF_AUDIO, AV_CODEC_ID_ON2AVC, AV_CODEC_ID_DSS_SP, AV_CODEC_ID_CODEC2, AV_CODEC_ID_FFWAVESYNTH = 0x15800, AV_CODEC_ID_SONIC, AV_CODEC_ID_SONIC_LS, AV_CODEC_ID_EVRC, AV_CODEC_ID_SMV, AV_CODEC_ID_DSD_LSBF, AV_CODEC_ID_DSD_MSBF, AV_CODEC_ID_DSD_LSBF_PLANAR, AV_CODEC_ID_DSD_MSBF_PLANAR, AV_CODEC_ID_4GV, AV_CODEC_ID_INTERPLAY_ACM, AV_CODEC_ID_XMA1, AV_CODEC_ID_XMA2, AV_CODEC_ID_DST, AV_CODEC_ID_ATRAC3AL, AV_CODEC_ID_ATRAC3PAL, AV_CODEC_ID_DOLBY_E, AV_CODEC_ID_APTX, AV_CODEC_ID_APTX_HD, AV_CODEC_ID_SBC, 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 = 0x17800, AV_CODEC_ID_EIA_608, AV_CODEC_ID_JACOSUB, AV_CODEC_ID_SAMI, AV_CODEC_ID_REALTEXT, AV_CODEC_ID_STL, 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, AV_CODEC_ID_HDMV_TEXT_SUBTITLE, AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, AV_CODEC_ID_TTF = 0x18000, AV_CODEC_ID_SCTE_35, AV_CODEC_ID_BINTEXT = 0x18800, 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_TIMED_ID3, AV_CODEC_ID_BIN_DATA, AV_CODEC_ID_PROBE = 0x19000, AV_CODEC_ID_MPEG2TS = 0x20000, AV_CODEC_ID_MPEG4SYSTEMS = 0x20001, AV_CODEC_ID_FFMETADATA = 0x21000, AV_CODEC_ID_WRAPPED_AVFRAME = 0x21001 } |
| Identify the syntax and semantics of the bitstream. 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 | { AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX = 0x01, AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX = 0x02, AV_CODEC_HW_CONFIG_METHOD_INTERNAL = 0x04, AV_CODEC_HW_CONFIG_METHOD_AD_HOC = 0x08 } |
| enum | AVSubtitleType { SUBTITLE_NONE, SUBTITLE_BITMAP, SUBTITLE_TEXT, SUBTITLE_ASS } |
Functions | |
| attribute_deprecated AVRational | av_codec_get_pkt_timebase (const AVCodecContext *avctx) |
| Accessors for some AVCodecContext fields. More... | |
| attribute_deprecated void | av_codec_set_pkt_timebase (AVCodecContext *avctx, AVRational val) |
| attribute_deprecated const AVCodecDescriptor * | av_codec_get_codec_descriptor (const AVCodecContext *avctx) |
| attribute_deprecated void | av_codec_set_codec_descriptor (AVCodecContext *avctx, const AVCodecDescriptor *desc) |
| attribute_deprecated unsigned | av_codec_get_codec_properties (const AVCodecContext *avctx) |
| attribute_deprecated int | av_codec_get_lowres (const AVCodecContext *avctx) |
| attribute_deprecated void | av_codec_set_lowres (AVCodecContext *avctx, int val) |
| attribute_deprecated int | av_codec_get_seek_preroll (const AVCodecContext *avctx) |
| attribute_deprecated void | av_codec_set_seek_preroll (AVCodecContext *avctx, int val) |
| attribute_deprecated uint16_t * | av_codec_get_chroma_intra_matrix (const AVCodecContext *avctx) |
| attribute_deprecated void | av_codec_set_chroma_intra_matrix (AVCodecContext *avctx, uint16_t *val) |
| attribute_deprecated int | av_codec_get_max_lowres (const AVCodec *codec) |
| const AVCodecHWConfig * | avcodec_get_hw_config (const AVCodec *codec, int index) |
| Retrieve supported hardware configurations for a codec. More... | |
| const AVCodec * | av_codec_iterate (void **opaque) |
| Iterate over all registered codecs. More... | |
| attribute_deprecated 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. | |
| attribute_deprecated void | avcodec_register (AVCodec *codec) |
| Register the codec codec and initialize libavcodec. More... | |
| attribute_deprecated void | avcodec_register_all (void) |
| Register all the codecs, parsers and bitstream filters which were enabled at configuration time. More... | |
| AVCodecContext * | avcodec_alloc_context3 (const AVCodec *codec) |
| Allocate an AVCodecContext and set its fields to default values. More... | |
| void | avcodec_free_context (AVCodecContext **avctx) |
| Free the codec context and everything associated with it and write NULL to the provided pointer. | |
| int | avcodec_get_context_defaults3 (AVCodecContext *s, const AVCodec *codec) |
| const AVClass * | avcodec_get_class (void) |
| Get the AVClass for AVCodecContext. More... | |
| const AVClass * | avcodec_get_frame_class (void) |
| Get the AVClass for AVFrame. More... | |
| const AVClass * | avcodec_get_subtitle_rect_class (void) |
| Get the AVClass for AVSubtitleRect. More... | |
| attribute_deprecated int | avcodec_copy_context (AVCodecContext *dest, const AVCodecContext *src) |
| Copy the settings of the source AVCodecContext into the destination AVCodecContext. More... | |
| AVCodecParameters * | avcodec_parameters_alloc (void) |
| Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0). More... | |
| void | avcodec_parameters_free (AVCodecParameters **par) |
| Free an AVCodecParameters instance and everything associated with it and write NULL to the supplied pointer. | |
| int | avcodec_parameters_copy (AVCodecParameters *dst, const AVCodecParameters *src) |
| Copy the contents of src to dst. More... | |
| int | avcodec_parameters_from_context (AVCodecParameters *par, const AVCodecContext *codec) |
| Fill the parameters struct based on the values from the supplied codec context. More... | |
| int | avcodec_parameters_to_context (AVCodecContext *codec, const AVCodecParameters *par) |
| Fill the codec context based on the values from the supplied codec parameters. More... | |
| int | avcodec_open2 (AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) |
| Initialize the AVCodecContext to use the given AVCodec. More... | |
| int | avcodec_close (AVCodecContext *avctx) |
| Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext itself). More... | |
| void | avsubtitle_free (AVSubtitle *sub) |
| Free all allocated data in the given subtitle struct. More... | |
Basic definitions, functions for querying libavcodec capabilities, allocating core structures, etc.
| #define AV_CODEC_CAP_AVOID_PROBING (1 << 17) |
Decoder is not a preferred choice for probing.
This indicates that the decoder is not a good choice for probing. It could for example be an expensive to spin up hardware decoder, or it could simply not provide a lot of useful information about the stream. A decoder marked with this flag should only be used as last resort choice for probing.
| #define AV_CODEC_CAP_DELAY (1 << 5) |
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.
| #define AV_CODEC_CAP_DR1 (1 << 1) |
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.
| #define AV_CODEC_CAP_HARDWARE (1 << 18) |
Codec is backed by a hardware implementation.
Typically used to identify a non-hwaccel hardware decoder. For information about hwaccels, use avcodec_get_hw_config() instead.
| #define AV_CODEC_CAP_HYBRID (1 << 19) |
Codec is potentially backed by a hardware implementation, but not necessarily.
This is used instead of AV_CODEC_CAP_HARDWARE, if the implementation provides some sort of internal fallback.
| #define AV_CODEC_CAP_SMALL_LAST_FRAME (1 << 6) |
Codec can be fed a final frame with a smaller size.
This can be used to prevent truncation of the last audio samples.
| #define AV_CODEC_CAP_SUBFRAMES (1 << 8) |
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 carrying 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.
| #define AV_CODEC_FLAG2_DROP_FRAME_TIMECODE (1 << 13) |
timecode is in drop frame format.
DEPRECATED!!!!
| #define AV_CODEC_FLAG_UNALIGNED (1 << 0) |
Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e.g.
due to cropping).
| #define AV_CODEC_PROP_INTRA_ONLY (1 << 0) |
Codec uses only intra compression.
Video and audio codecs only.
| #define AV_CODEC_PROP_LOSSLESS (1 << 2) |
Codec supports lossless compression.
Audio and video codecs only.
| #define AV_CODEC_PROP_LOSSY (1 << 1) |
Codec supports lossy compression.
Audio and video codecs only.
| #define AV_CODEC_PROP_REORDER (1 << 3) |
Codec supports frame reordering.
That is, the coded order (the order in which the encoded packets are output by the encoders / stored / input to the decoders) may be different from the presentation order of the corresponding frames.
For codecs that do not have this property set, PTS and DTS should always be equal.
| #define AV_CODEC_PROP_TEXT_SUB (1 << 17) |
Subtitle codec is text based.
Decoded AVSubtitle data can be read from the AVSubtitleRect->ass field.
| typedef struct AVCodecContext AVCodecContext |
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. You can use AVOptions (av_opt* / av_set/get*()) to access these fields from user applications. The name string for AVOptions options matches the associated command line parameter name and can be found in libavcodec/options_table.h The AVOption/command line parameter names differ in some cases from the C structure field names for historic reasons or brevity. sizeof(AVCodecContext) must not be used outside libav*.
| typedef struct AVCodecDescriptor AVCodecDescriptor |
This struct describes the properties of a single codec described by an AVCodecID.
| typedef struct AVCodecParameters AVCodecParameters |
This struct describes the properties of an encoded stream.
sizeof(AVCodecParameters) is not a part of the public ABI, this struct must be allocated with avcodec_parameters_alloc() and freed with avcodec_parameters_free().
| typedef struct AVCPBProperties AVCPBProperties |
This structure describes the bitrate properties of an encoded bitstream.
It roughly corresponds to a subset the VBV parameters for MPEG-2 or HRD parameters for H.264/HEVC.
Pan Scan area.
This specifies the area which should be displayed. Note there may be multiple such areas for one frame.
| anonymous enum |
| Enumerator | |
|---|---|
| AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX | The codec supports this format via the hw_device_ctx interface. When selecting this format, AVCodecContext.hw_device_ctx should have been set to a device of the specified type before calling avcodec_open2(). |
| AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX | The codec supports this format via the hw_frames_ctx interface. When selecting this format for a decoder, AVCodecContext.hw_frames_ctx should be set to a suitable frames context inside the get_format() callback. The frames context must have been created on a device of the specified type. |
| AV_CODEC_HW_CONFIG_METHOD_INTERNAL | The codec supports this format by some internal method. This format can be selected without any additional configuration - no device or frames context is required. |
| AV_CODEC_HW_CONFIG_METHOD_AD_HOC | The codec supports this format by some ad-hoc method. Additional settings and/or function calls are required. See the codec-specific documentation for details. (Methods requiring this sort of configuration are deprecated and others should be used in preference.) |
| enum AVAudioServiceType |
| 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
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_MPEG2VIDEO | preferred ID for MPEG-1/2 video decoding |
| AV_CODEC_ID_FIRST_AUDIO | A dummy id pointing at the start of audio codecs. |
| AV_CODEC_ID_MP3 | preferred ID for decoding MPEG audio layer 1, 2 or 3 |
| AV_CODEC_ID_GSM | as in Berlin toast format |
| AV_CODEC_ID_FIRST_SUBTITLE | A dummy ID pointing at the start of subtitle codecs. |
| AV_CODEC_ID_TEXT | raw UTF-8 text |
| AV_CODEC_ID_FIRST_UNKNOWN | A dummy ID pointing at the start of various fake codecs. |
| AV_CODEC_ID_SCTE_35 | Contain timestamp estimated through PCR of program stream. |
| 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. |
| AV_CODEC_ID_WRAPPED_AVFRAME | Passthrough codec, AVFrames wrapped in AVPacket. |
| enum AVSubtitleType |
| attribute_deprecated AVRational av_codec_get_pkt_timebase | ( | const AVCodecContext * | avctx | ) |
Accessors for some AVCodecContext fields.
These used to be provided for ABI compatibility, and do not need to be used anymore.
| const AVCodec* av_codec_iterate | ( | void ** | opaque | ) |
Iterate over all registered codecs.
| opaque | a pointer where libavcodec will store the iteration state. Must point to NULL to start the iteration. |
| AVCodecContext* avcodec_alloc_context3 | ( | const AVCodec * | codec | ) |
Allocate an AVCodecContext and set its fields to default values.
The resulting struct should be freed with avcodec_free_context().
| 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). |
| 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() with a non-NULL codec. Subsequent calls will do nothing.
| attribute_deprecated 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.
| dest | target codec context, should be initialized with avcodec_alloc_context3(NULL), but otherwise uninitialized |
| src | source codec context |
| 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.
| int avcodec_get_context_defaults3 | ( | AVCodecContext * | s, |
| const AVCodec * | codec | ||
| ) |
A new codec context should be allocated for each new use.
| const AVClass* avcodec_get_frame_class | ( | void | ) |
It can be used in combination with AV_OPT_SEARCH_FAKE_OBJ for examining options.
| const AVCodecHWConfig* avcodec_get_hw_config | ( | const AVCodec * | codec, |
| int | index | ||
| ) |
Retrieve supported hardware configurations for a codec.
Values of index from zero to some maximum return the indexed configuration descriptor; all other values return NULL. If the codec does not support any hardware configurations then it will always return NULL.
| 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.
| 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.
| 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 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. |
| AVCodecParameters* avcodec_parameters_alloc | ( | void | ) |
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
The returned struct must be freed with avcodec_parameters_free().
| int avcodec_parameters_copy | ( | AVCodecParameters * | dst, |
| const AVCodecParameters * | src | ||
| ) |
Copy the contents of src to dst.
Any allocated fields in dst are freed and replaced with newly allocated duplicates of the corresponding fields in src.
| int avcodec_parameters_from_context | ( | AVCodecParameters * | par, |
| const AVCodecContext * | codec | ||
| ) |
Fill the parameters struct based on the values from the supplied codec context.
Any allocated fields in par are freed and replaced with duplicates of the corresponding fields in codec.
| int avcodec_parameters_to_context | ( | AVCodecContext * | codec, |
| const AVCodecParameters * | par | ||
| ) |
Fill the codec context based on the values from the supplied codec parameters.
Any allocated fields in codec that have a corresponding field in par are freed and replaced with duplicates of the corresponding field in par. Fields in codec that do not have a counterpart in par are not touched.
| attribute_deprecated void avcodec_register | ( | AVCodec * | codec | ) |
Register the codec codec and initialize libavcodec.
| attribute_deprecated 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.
| void avsubtitle_free | ( | AVSubtitle * | sub | ) |
Free all allocated data in the given subtitle struct.
| sub | AVSubtitle to free. |
1.8.12