general.texi

ffmpeg的完整源代码和作者自己写的文档。不但有在Linux的工程哦

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@settitle General Documentation
@titlepage
@sp 7
@center @titlefont{General Documentation}
@sp 3
@end titlepage


@chapter external libraries

FFmpeg can be hooked up with a number of external libraries to add support
for more formats. None of them are used by default, their use has to be
explicitly requested by passing the appropriate flags to @file{./configure}.

@section AMR

AMR comes in two different flavors, WB and NB. FFmpeg can make use of the
AMR WB (floating-point mode) and the AMR NB (floating-point mode) reference
decoders and encoders.

Go to @url{http://www.penguin.cz/~utx/amr} and follow the instructions for
installing the libraries. Then pass @code{--enable-libamr-nb} and/or
@code{--enable-libamr-wb} to configure to enable the libraries.


@chapter Supported File Formats and Codecs

You can use the @code{-formats} option to have an exhaustive list.

@section File Formats

FFmpeg supports the following file formats through the @code{libavformat}
library:

@multitable @columnfractions .4 .1 .1 .4
@item Supported File Format @tab Encoding @tab Decoding @tab Comments
@item MPEG audio @tab X @tab X
@item MPEG-1 systems @tab X  @tab  X
@tab muxed audio and video
@item MPEG-2 PS @tab X  @tab  X
@tab also known as @code{VOB} file
@item MPEG-2 TS @tab    @tab  X
@tab also known as DVB Transport Stream
@item ASF@tab X @tab X
@item AVI@tab X @tab X
@item WAV@tab X @tab X
@item Macromedia Flash@tab X @tab X
@tab Only embedded audio is decoded.
@item FLV              @tab  X @tab X
@tab Macromedia Flash video files
@item Real Audio and Video @tab X @tab X
@item Raw AC3 @tab X  @tab  X
@item Raw MJPEG @tab X  @tab  X
@item Raw MPEG video @tab X  @tab  X
@item Raw PCM8/16 bits, mulaw/Alaw@tab X  @tab  X
@item Raw CRI ADX audio @tab X  @tab  X
@item Raw Shorten audio @tab    @tab  X
@item SUN AU format @tab X  @tab  X
@item NUT @tab X @tab X @tab NUT Open Container Format
@item QuickTime        @tab X @tab  X
@item MPEG-4           @tab X @tab  X
@tab MPEG-4 is a variant of QuickTime.
@item Raw MPEG4 video  @tab  X @tab  X
@item DV               @tab  X @tab  X
@item 4xm              @tab    @tab X
@tab 4X Technologies format, used in some games.
@item Playstation STR  @tab    @tab X
@item Id RoQ           @tab X  @tab X
@tab Used in Quake III, Jedi Knight 2, other computer games.
@item Interplay MVE    @tab    @tab X
@tab Format used in various Interplay computer games.
@item WC3 Movie        @tab    @tab X
@tab Multimedia format used in Origin's Wing Commander III computer game.
@item Sega FILM/CPK    @tab    @tab X
@tab Used in many Sega Saturn console games.
@item Westwood Studios VQA/AUD  @tab    @tab X
@tab Multimedia formats used in Westwood Studios games.
@item Id Cinematic (.cin) @tab    @tab X
@tab Used in Quake II.
@item FLIC format      @tab    @tab X
@tab .fli/.flc files
@item Sierra VMD       @tab    @tab X
@tab Used in Sierra CD-ROM games.
@item Sierra Online    @tab    @tab X
@tab .sol files used in Sierra Online games.
@item Matroska         @tab X  @tab X
@item Electronic Arts Multimedia    @tab    @tab X
@tab Used in various EA games; files have extensions like WVE and UV2.
@item Nullsoft Video (NSV) format @tab    @tab X
@item ADTS AAC audio @tab X @tab X
@item Creative VOC @tab X @tab X @tab Created for the Sound Blaster Pro.
@item American Laser Games MM  @tab    @tab X
@tab Multimedia format used in games like Mad Dog McCree
@item AVS @tab    @tab X
@tab Multimedia format used by the Creature Shock game.
@item Smacker @tab    @tab X
@tab Multimedia format used by many games.
@item GXF @tab  X @tab X
@tab General eXchange Format SMPTE 360M, used by Thomson Grass Valley playout servers.
@item CIN @tab    @tab X
@tab Multimedia format used by Delphine Software games.
@item MXF @tab    @tab X
@tab Material eXchange Format SMPTE 377M, used by D-Cinema, broadcast industry.
@item SEQ @tab    @tab X
@tab Tiertex .seq files used in the DOS CDROM version of the game Flashback.
@item DXA @tab    @tab X
@tab This format is used in non-Windows version of Feeble Files game and
different game cutscenes repacked for use with ScummVM.
@item THP @tab    @tab X
@tab Used on the Nintendo GameCube.
@item C93 @tab    @tab X
@tab Used in the game Cyberia from Interplay.
@item Bethsoft VID @tab    @tab X
@tab Used in some games from Bethesda Softworks.
@item CRYO APC @tab    @tab X
@tab Audio format used in some games by CRYO Interactive Entertainment.
@item Monkey's Audio @tab    @tab X
@end multitable

@code{X} means that encoding (resp. decoding) is supported.

@section Image Formats

FFmpeg can read and write images for each frame of a video sequence. The
following image formats are supported:

@multitable @columnfractions .4 .1 .1 .4
@item Supported Image Format @tab Encoding @tab Decoding @tab Comments
@item PGM, PPM     @tab X @tab X
@item PAM          @tab X @tab X @tab PAM is a PNM extension with alpha support.
@item PGMYUV       @tab X @tab X @tab PGM with U and V components in YUV 4:2:0
@item JPEG         @tab X @tab X @tab Progressive JPEG is not supported.
@item .Y.U.V       @tab X @tab X @tab one raw file per component
@item animated GIF @tab X @tab X @tab Only uncompressed GIFs are generated.
@item PNG          @tab X @tab X @tab 2 bit and 4 bit/pixel not supported yet.
@item Targa        @tab   @tab X @tab Targa (.TGA) image format.
@item TIFF         @tab X @tab X @tab YUV, JPEG and some extension is not supported yet.
@item SGI          @tab X @tab X @tab SGI RGB image format
@item PTX          @tab   @tab X @tab V.Flash PTX format
@end multitable

@code{X} means that encoding (resp. decoding) is supported.

@section Video Codecs

@multitable @columnfractions .4 .1 .1 .4
@item Supported Codec @tab Encoding @tab Decoding @tab Comments
@item MPEG-1 video           @tab  X  @tab  X
@item MPEG-2 video           @tab  X  @tab  X
@item MPEG-4                 @tab  X  @tab  X
@item MSMPEG4 V1             @tab  X  @tab  X
@item MSMPEG4 V2             @tab  X  @tab  X
@item MSMPEG4 V3             @tab  X  @tab  X
@item WMV7                   @tab  X  @tab  X
@item WMV8                   @tab  X  @tab  X @tab not completely working
@item WMV9                   @tab     @tab  X @tab not completely working
@item VC1                    @tab     @tab  X
@item H.261                  @tab  X  @tab  X
@item H.263(+)               @tab  X  @tab  X @tab also known as RealVideo 1.0
@item H.264                  @tab     @tab  X
@item RealVideo 1.0          @tab  X  @tab  X
@item RealVideo 2.0          @tab  X  @tab  X
@item MJPEG                  @tab  X  @tab  X
@item lossless MJPEG         @tab  X  @tab  X
@item JPEG-LS                @tab  X  @tab  X @tab fourcc: MJLS, lossless and near-lossless is supported
@item Apple MJPEG-B          @tab     @tab  X
@item Sunplus MJPEG          @tab     @tab  X @tab fourcc: SP5X
@item DV                     @tab  X  @tab  X
@item HuffYUV                @tab  X  @tab  X
@item FFmpeg Video 1         @tab  X  @tab  X @tab experimental lossless codec (fourcc: FFV1)
@item FFmpeg Snow            @tab  X  @tab  X @tab experimental wavelet codec (fourcc: SNOW)
@item Asus v1                @tab  X  @tab  X @tab fourcc: ASV1
@item Asus v2                @tab  X  @tab  X @tab fourcc: ASV2
@item Creative YUV           @tab     @tab  X @tab fourcc: CYUV
@item Sorenson Video 1       @tab  X  @tab  X @tab fourcc: SVQ1
@item Sorenson Video 3       @tab     @tab  X @tab fourcc: SVQ3
@item On2 VP3                @tab     @tab  X @tab still experimental
@item On2 VP5                @tab     @tab  X @tab fourcc: VP50
@item On2 VP6                @tab     @tab  X @tab fourcc: VP60,VP61,VP62
@item Theora                 @tab  X  @tab  X @tab still experimental
@item Intel Indeo 3          @tab     @tab  X
@item FLV                    @tab  X  @tab  X @tab Sorenson H.263 used in Flash
@item Flash Screen Video     @tab  X  @tab  X @tab fourcc: FSV1
@item ATI VCR1               @tab     @tab  X @tab fourcc: VCR1
@item ATI VCR2               @tab     @tab  X @tab fourcc: VCR2
@item Cirrus Logic AccuPak   @tab     @tab  X @tab fourcc: CLJR
@item 4X Video               @tab     @tab  X @tab Used in certain computer games.
@item Sony Playstation MDEC  @tab     @tab  X
@item Id RoQ                 @tab  X  @tab  X @tab Used in Quake III, Jedi Knight 2, other computer games.
@item Xan/WC3                @tab     @tab  X @tab Used in Wing Commander III .MVE files.
@item Interplay Video        @tab     @tab  X @tab Used in Interplay .MVE files.
@item Apple Animation        @tab  X  @tab  X @tab fourcc: 'rle '
@item Apple Graphics         @tab     @tab  X @tab fourcc: 'smc '
@item Apple Video            @tab     @tab  X @tab fourcc: rpza
@item Apple QuickDraw        @tab     @tab  X @tab fourcc: qdrw
@item Cinepak                @tab     @tab  X
@item Microsoft RLE          @tab     @tab  X
@item Microsoft Video-1      @tab     @tab  X
@item Westwood VQA           @tab     @tab  X
@item Id Cinematic Video     @tab     @tab  X @tab Used in Quake II.
@item Planar RGB             @tab     @tab  X @tab fourcc: 8BPS
@item FLIC video             @tab     @tab  X
@item Duck TrueMotion v1     @tab     @tab  X @tab fourcc: DUCK
@item Duck TrueMotion v2     @tab     @tab  X @tab fourcc: TM20
@item VMD Video              @tab     @tab  X @tab Used in Sierra VMD files.
@item MSZH                   @tab     @tab  X @tab Part of LCL
@item ZLIB                   @tab  X  @tab  X @tab Part of LCL, encoder experimental
@item TechSmith Camtasia     @tab     @tab  X @tab fourcc: TSCC
@item IBM Ultimotion         @tab     @tab  X @tab fourcc: ULTI
@item Miro VideoXL           @tab     @tab  X @tab fourcc: VIXL
@item QPEG                   @tab     @tab  X @tab fourccs: QPEG, Q1.0, Q1.1
@item LOCO                   @tab     @tab  X @tab
@item Winnov WNV1            @tab     @tab  X @tab
@item Autodesk Animator Studio Codec  @tab     @tab  X @tab fourcc: AASC
@item Fraps FPS1             @tab     @tab  X @tab
@item CamStudio              @tab     @tab  X @tab fourcc: CSCD
@item American Laser Games Video  @tab    @tab X @tab Used in games like Mad Dog McCree
@item ZMBV                   @tab   X @tab  X @tab Encoder works only on PAL8
@item AVS Video              @tab     @tab  X @tab Video encoding used by the Creature Shock game.
@item Smacker Video          @tab     @tab  X @tab Video encoding used in Smacker.
@item RTjpeg                 @tab     @tab  X @tab Video encoding used in NuppelVideo files.
@item KMVC                   @tab     @tab  X @tab Codec used in Worms games.
@item VMware Video           @tab     @tab  X @tab Codec used in videos captured by VMware.
@item Cin Video              @tab     @tab  X @tab Codec used in Delphine Software games.
@item Tiertex Seq Video      @tab     @tab  X @tab Codec used in DOS CDROM FlashBack game.
@item DXA Video              @tab     @tab  X @tab Codec originally used in Feeble Files game.
@item AVID DNxHD             @tab     @tab  X @tab aka SMPTE VC3
@item C93 Video              @tab     @tab  X @tab Codec used in Cyberia game.
@item THP                    @tab     @tab  X @tab Used on the Nintendo GameCube.
@item Bethsoft VID           @tab     @tab  X @tab Used in some games from Bethesda Softworks.
@item Renderware TXD         @tab     @tab  X @tab Texture dictionaries used by the Renderware Engine.
@item AMV                    @tab     @tab  X @tab Used in Chinese MP3 players.
@end multitable

@code{X} means that encoding (resp. decoding) is supported.

@section Audio Codecs

@multitable @columnfractions .4 .1 .1 .1 .7
@item Supported Codec @tab Encoding @tab Decoding @tab Comments
@item MPEG audio layer 2     @tab  IX  @tab  IX
@item MPEG audio layer 1/3   @tab IX   @tab  IX
@tab MP3 encoding is supported through the external library LAME.
@item AC3                    @tab  IX  @tab  IX
@tab liba52 is used internally for decoding.
@item Vorbis                 @tab  X   @tab  X
@item WMA V1/V2              @tab X    @tab X
@item AAC                    @tab X    @tab X
@tab Supported through the external library libfaac/libfaad.
@item Microsoft ADPCM        @tab X    @tab X
@item AMV IMA ADPCM          @tab      @tab X
@tab Used in AMV files
@item MS IMA ADPCM           @tab X    @tab X
@item QT IMA ADPCM           @tab      @tab X
@item 4X IMA ADPCM           @tab      @tab X
@item G.726  ADPCM           @tab X    @tab X
@item Duck DK3 IMA ADPCM     @tab      @tab X
@tab Used in some Sega Saturn console games.
@item Duck DK4 IMA ADPCM     @tab      @tab X
@tab Used in some Sega Saturn console games.
@item Westwood Studios IMA ADPCM @tab      @tab X
@tab Used in Westwood Studios games like Command and Conquer.
@item SMJPEG IMA ADPCM       @tab      @tab X
@tab Used in certain Loki game ports.
@item CD-ROM XA ADPCM        @tab      @tab X
@item CRI ADX ADPCM          @tab X    @tab X
@tab Used in Sega Dreamcast games.
@item Electronic Arts ADPCM  @tab      @tab X
@tab Used in various EA titles.
@item Creative ADPCM         @tab      @tab X
@tab 16 -> 4, 8 -> 4, 8 -> 3, 8 -> 2
@item THP ADPCM              @tab      @tab X
@tab Used on the Nintendo GameCube.
@item RA144                  @tab      @tab X
@tab Real 14400 bit/s codec
@item RA288                  @tab      @tab X
@tab Real 28800 bit/s codec
@item RADnet                 @tab X    @tab IX
@tab Real low bitrate AC3 codec, liba52 is used for decoding.
@item AMR-NB                 @tab X    @tab X
@tab Supported through an external library.
@item AMR-WB                 @tab X    @tab X
@tab Supported through an external library.
@item DV audio               @tab      @tab X
@item Id RoQ DPCM            @tab X    @tab X
@tab Used in Quake III, Jedi Knight 2, other computer games.
@item Interplay MVE DPCM     @tab      @tab X
@tab Used in various Interplay computer games.
@item Xan DPCM               @tab      @tab X
@tab Used in Origin's Wing Commander IV AVI files.
@item Sierra Online DPCM     @tab      @tab X
@tab Used in Sierra Online game audio files.
@item Apple MACE 3           @tab      @tab X
@item Apple MACE 6           @tab      @tab X
@item FLAC lossless audio    @tab X    @tab X
@item Shorten lossless audio @tab      @tab X
@item Apple lossless audio   @tab      @tab X
@tab QuickTime fourcc 'alac'
@item FFmpeg Sonic           @tab X    @tab X
@tab experimental lossy/lossless codec
@item Qdesign QDM2           @tab      @tab X
@tab there are still some distortions
@item Real COOK              @tab      @tab X
@tab All versions except 5.1 are supported
@item DSP Group TrueSpeech   @tab      @tab X
@item True Audio (TTA)       @tab      @tab X
@item Smacker Audio          @tab      @tab X
@item WavPack Audio          @tab      @tab X
@item Cin Audio              @tab      @tab X
@tab Codec used in Delphine Software games.
@item Intel Music Coder      @tab      @tab X
@item Musepack               @tab      @tab X
@tab Only SV7 is supported
@item DT$ Coherent Audio     @tab      @tab X
@item ATRAC 3                @tab      @tab X
@item Monkey's Audio         @tab      @tab X @tab Only versions 3.97-3.99 are supported