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\input texinfo @c -*- texinfo -*-
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@settitle General Documentation
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@titlepage
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@center @titlefont{General Documentation}
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@end titlepage
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@top
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@contents
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@chapter external libraries
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Libav can be hooked up with a number of external libraries to add support
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for more formats. None of them are used by default, their use has to be
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explicitly requested by passing the appropriate flags to @file{./configure}.
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@section OpenCORE AMR
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Libav can make use of the OpenCORE libraries for AMR-NB
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decoding/encoding and AMR-WB decoding.
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Go to @url{http://sourceforge.net/projects/opencore-amr/} and follow the instructions for
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installing the libraries. Then pass @code{--enable-libopencore-amrnb} and/or
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@code{--enable-libopencore-amrwb} to configure to enable the libraries.
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Note that OpenCORE is under the Apache License 2.0 (see
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@url{http://www.apache.org/licenses/LICENSE-2.0} for details), which is
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incompatible with the LGPL version 2.1 and GPL version 2. You have to
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upgrade Libav's license to LGPL version 3 (or if you have enabled
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GPL components, GPL version 3) to use it.
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@chapter Supported File Formats and Codecs
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You can use the @code{-formats} and @code{-codecs} options to have an exhaustive list.
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@section File Formats
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Libav supports the following file formats through the @code{libavformat}
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library:
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@multitable @columnfractions .4 .1 .1 .4
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@item Name @tab Encoding @tab Decoding @tab Comments
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@item 4xm                       @tab   @tab X
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    @tab 4X Technologies format, used in some games.
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@item 8088flex TMV              @tab   @tab X
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@item Adobe Filmstrip           @tab X @tab X
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@item Audio IFF (AIFF)          @tab X @tab X
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@item American Laser Games MM   @tab   @tab X
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    @tab Multimedia format used in games like Mad Dog McCree.
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@item 3GPP AMR                  @tab X @tab X
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@item Apple HTTP Live Streaming @tab   @tab X
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@item ASF                       @tab X @tab X
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@item AVI                       @tab X @tab X
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@item AVISynth                  @tab   @tab X
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@item AVS                       @tab   @tab X
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    @tab Multimedia format used by the Creature Shock game.
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@item Beam Software SIFF        @tab   @tab X
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    @tab Audio and video format used in some games by Beam Software.
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@item Bethesda Softworks VID    @tab   @tab X
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    @tab Used in some games from Bethesda Softworks.
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@item Bink                      @tab   @tab X
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    @tab Multimedia format used by many games.
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@item Bitmap Brothers JV        @tab   @tab X
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    @tab Used in Z and Z95 games.
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@item Brute Force & Ignorance   @tab   @tab X
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    @tab Used in the game Flash Traffic: City of Angels.
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@item Interplay C93             @tab   @tab X
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    @tab Used in the game Cyberia from Interplay.
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@item Delphine Software International CIN @tab   @tab X
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    @tab Multimedia format used by Delphine Software games.
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@item CD+G                      @tab   @tab X
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    @tab Video format used by CD+G karaoke disks
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@item Core Audio Format         @tab   @tab X
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    @tab Apple Core Audio Format
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@item CRC testing format        @tab X @tab
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@item Creative Voice            @tab X @tab X
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    @tab Created for the Sound Blaster Pro.
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@item CRYO APC                  @tab   @tab X
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    @tab Audio format used in some games by CRYO Interactive Entertainment.
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@item D-Cinema audio            @tab X @tab X
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@item Deluxe Paint Animation    @tab   @tab X
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@item DFA                       @tab   @tab X
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    @tab This format is used in Chronomaster game
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@item DV video                  @tab X @tab X
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@item DXA                       @tab   @tab X
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    @tab This format is used in the non-Windows version of the Feeble Files
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         game and different game cutscenes repacked for use with ScummVM.
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@item Electronic Arts cdata  @tab    @tab X
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@item Electronic Arts Multimedia  @tab    @tab X
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    @tab Used in various EA games; files have extensions like WVE and UV2.
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@item FFM (FFserver live feed)  @tab X @tab X
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@item Flash (SWF)               @tab X @tab X
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@item Flash 9 (AVM2)            @tab X @tab X
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    @tab Only embedded audio is decoded.
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@item FLI/FLC/FLX animation     @tab   @tab X
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    @tab .fli/.flc files
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@item Flash Video (FLV)         @tab   @tab X
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    @tab Macromedia Flash video files
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@item framecrc testing format   @tab X @tab
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@item FunCom ISS                @tab   @tab X
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    @tab Audio format used in various games from FunCom like The Longest Journey.
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@item GIF Animation             @tab X @tab
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@item GXF                       @tab X @tab X
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    @tab General eXchange Format SMPTE 360M, used by Thomson Grass Valley
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         playout servers.
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@item id Quake II CIN video     @tab   @tab X
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@item id RoQ                    @tab X @tab X
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    @tab Used in Quake III, Jedi Knight 2, other computer games.
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@item IEC61937 encapsulation @tab X @tab X
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@item IFF                       @tab   @tab X
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    @tab Interchange File Format
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@item Interplay MVE             @tab   @tab X
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    @tab Format used in various Interplay computer games.
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@item IV8                       @tab   @tab X
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    @tab A format generated by IndigoVision 8000 video server.
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@item IVF (On2)                 @tab X @tab X
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    @tab A format used by libvpx
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@item LMLM4                     @tab   @tab X
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    @tab Used by Linux Media Labs MPEG-4 PCI boards
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@item LXF                       @tab   @tab X
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    @tab VR native stream format, used by Leitch/Harris' video servers.
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@item Matroska                  @tab X @tab X
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@item Matroska audio            @tab X @tab
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@item FFmpeg metadata           @tab X @tab X
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    @tab Metadata in text format.
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@item MAXIS XA                  @tab   @tab X
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    @tab Used in Sim City 3000; file extension .xa.
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@item MD Studio                 @tab   @tab X
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@item Mobotix .mxg              @tab   @tab X
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@item Monkey's Audio            @tab   @tab X
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@item Motion Pixels MVI         @tab   @tab X
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@item MOV/QuickTime/MP4         @tab X @tab X
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    @tab 3GP, 3GP2, PSP, iPod variants supported
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@item MP2                       @tab X @tab X
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@item MP3                       @tab X @tab X
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@item MPEG-1 System             @tab X @tab X
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    @tab muxed audio and video, VCD format supported
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@item MPEG-PS (program stream)  @tab X @tab X
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    @tab also known as @code{VOB} file, SVCD and DVD format supported
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@item MPEG-TS (transport stream) @tab X @tab X
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    @tab also known as DVB Transport Stream
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@item MPEG-4                    @tab X @tab X
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    @tab MPEG-4 is a variant of QuickTime.
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@item MIME multipart JPEG       @tab X @tab
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@item MSN TCP webcam            @tab   @tab X
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    @tab Used by MSN Messenger webcam streams.
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@item MTV                       @tab   @tab X
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@item Musepack                  @tab   @tab X
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@item Musepack SV8              @tab   @tab X
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@item Material eXchange Format (MXF) @tab X @tab X
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    @tab SMPTE 377M, used by D-Cinema, broadcast industry.
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@item Material eXchange Format (MXF), D-10 Mapping @tab X @tab X
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    @tab SMPTE 386M, D-10/IMX Mapping.
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@item NC camera feed            @tab   @tab X
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    @tab NC (AVIP NC4600) camera streams
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@item NTT TwinVQ (VQF)          @tab   @tab X
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    @tab Nippon Telegraph and Telephone Corporation TwinVQ.
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@item Nullsoft Streaming Video  @tab   @tab X
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@item NuppelVideo               @tab   @tab X
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@item NUT                       @tab X @tab X
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    @tab NUT Open Container Format
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@item Ogg                       @tab X @tab X
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@item TechnoTrend PVA           @tab   @tab X
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    @tab Used by TechnoTrend DVB PCI boards.
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@item QCP                       @tab   @tab X
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@item raw ADTS (AAC)            @tab X @tab X
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@item raw AC-3                  @tab X @tab X
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@item raw Chinese AVS video     @tab X @tab X
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@item raw CRI ADX               @tab X @tab X
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@item raw Dirac                 @tab X @tab X
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@item raw DNxHD                 @tab X @tab X
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@item raw DTS                   @tab X @tab X
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@item raw E-AC-3                @tab X @tab X
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@item raw FLAC                  @tab X @tab X
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@item raw GSM                   @tab   @tab X
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@item raw H.261                 @tab X @tab X
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@item raw H.263                 @tab X @tab X
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@item raw H.264                 @tab X @tab X
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@item raw Ingenient MJPEG       @tab   @tab X
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@item raw MJPEG                 @tab X @tab X
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@item raw MLP                   @tab   @tab X
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@item raw MPEG                  @tab   @tab X
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@item raw MPEG-1                @tab   @tab X
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@item raw MPEG-2                @tab   @tab X
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@item raw MPEG-4                @tab X @tab X
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@item raw NULL                  @tab X @tab
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@item raw video                 @tab X @tab X
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@item raw id RoQ                @tab X @tab
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@item raw Shorten               @tab   @tab X
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@item raw TrueHD                @tab X @tab X
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@item raw VC-1                  @tab   @tab X
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@item raw PCM A-law             @tab X @tab X
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@item raw PCM mu-law            @tab X @tab X
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@item raw PCM signed 8 bit      @tab X @tab X
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@item raw PCM signed 16 bit big-endian  @tab X @tab X
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@item raw PCM signed 16 bit little-endian  @tab X @tab X
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@item raw PCM signed 24 bit big-endian  @tab X @tab X
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@item raw PCM signed 24 bit little-endian  @tab X @tab X
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@item raw PCM signed 32 bit big-endian  @tab X @tab X
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@item raw PCM signed 32 bit little-endian  @tab X @tab X
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@item raw PCM unsigned 8 bit    @tab X @tab X
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@item raw PCM unsigned 16 bit big-endian  @tab X @tab X
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@item raw PCM unsigned 16 bit little-endian  @tab X @tab X
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@item raw PCM unsigned 24 bit big-endian  @tab X @tab X
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@item raw PCM unsigned 24 bit little-endian  @tab X @tab X
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@item raw PCM unsigned 32 bit big-endian  @tab X @tab X
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@item raw PCM unsigned 32 bit little-endian  @tab X @tab X
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@item raw PCM floating-point 32 bit big-endian  @tab X @tab X
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@item raw PCM floating-point 32 bit little-endian  @tab X @tab X
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@item raw PCM floating-point 64 bit big-endian  @tab X @tab X
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@item raw PCM floating-point 64 bit little-endian  @tab X @tab X
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@item RDT                       @tab   @tab X
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@item REDCODE R3D               @tab   @tab X
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    @tab File format used by RED Digital cameras, contains JPEG 2000 frames and PCM audio.
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@item RealMedia                 @tab X @tab X
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@item Redirector                @tab   @tab X
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@item Renderware TeXture Dictionary @tab   @tab X
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@item RL2                       @tab   @tab X
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    @tab Audio and video format used in some games by Entertainment Software Partners.
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@item RPL/ARMovie               @tab   @tab X
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@item Lego Mindstorms RSO       @tab X @tab X
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@item RTMP                      @tab X @tab X
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    @tab Output is performed by publishing stream to RTMP server
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@item RTP                       @tab X @tab X
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@item RTSP                      @tab X @tab X
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@item SAP                       @tab X @tab X
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@item SDP                       @tab   @tab X
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@item Sega FILM/CPK             @tab   @tab X
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    @tab Used in many Sega Saturn console games.
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@item Sierra SOL                @tab   @tab X
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    @tab .sol files used in Sierra Online games.
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@item Sierra VMD                @tab   @tab X
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    @tab Used in Sierra CD-ROM games.
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@item Smacker                   @tab   @tab X
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    @tab Multimedia format used by many games.
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@item Sony OpenMG (OMA)         @tab   @tab X
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    @tab Audio format used in Sony Sonic Stage and Sony Vegas.
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@item Sony PlayStation STR      @tab   @tab X
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@item Sony Wave64 (W64)         @tab   @tab X
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@item SoX native format         @tab X @tab X
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@item SUN AU format             @tab X @tab X
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@item Text files                @tab   @tab X
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@item THP                       @tab   @tab X
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    @tab Used on the Nintendo GameCube.
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@item Tiertex Limited SEQ       @tab   @tab X
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    @tab Tiertex .seq files used in the DOS CD-ROM version of the game Flashback.
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@item True Audio                @tab   @tab X
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@item VC-1 test bitstream       @tab X @tab X
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@item WAV                       @tab X @tab X
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@item WavPack                   @tab   @tab X
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@item WebM                      @tab X @tab X
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@item Windows Televison (WTV)   @tab   @tab X
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@item Wing Commander III movie  @tab   @tab X
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    @tab Multimedia format used in Origin's Wing Commander III computer game.
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@item Westwood Studios audio    @tab   @tab X
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    @tab Multimedia format used in Westwood Studios games.
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@item Westwood Studios VQA      @tab   @tab X
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    @tab Multimedia format used in Westwood Studios games.
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@item YUV4MPEG pipe             @tab X @tab X
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@item Psygnosis YOP             @tab   @tab X
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@end multitable
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@code{X} means that encoding (resp. decoding) is supported.
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@section Image Formats
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FFmpeg can read and write images for each frame of a video sequence. The
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following image formats are supported:
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@multitable @columnfractions .4 .1 .1 .4
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@item Name @tab Encoding @tab Decoding @tab Comments
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@item .Y.U.V       @tab X @tab X
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    @tab one raw file per component
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@item animated GIF @tab X @tab X
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    @tab Only uncompressed GIFs are generated.
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@item BMP          @tab X @tab X
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    @tab Microsoft BMP image
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@item DPX          @tab   @tab X
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    @tab Digital Picture Exchange
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@item JPEG         @tab X @tab X
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    @tab Progressive JPEG is not supported.
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@item JPEG 2000    @tab   @tab E
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    @tab decoding supported through external library libopenjpeg
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@item JPEG-LS      @tab X @tab X
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@item LJPEG        @tab X @tab
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    @tab Lossless JPEG
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@item PAM          @tab X @tab X
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    @tab PAM is a PNM extension with alpha support.
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@item PBM          @tab X @tab X
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    @tab Portable BitMap image
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@item PCX          @tab X @tab X
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    @tab PC Paintbrush
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@item PGM          @tab X @tab X
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    @tab Portable GrayMap image
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@item PGMYUV       @tab X @tab X
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    @tab PGM with U and V components in YUV 4:2:0
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@item PIC          @tab @tab X
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    @tab Pictor/PC Paint
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@item PNG          @tab X @tab X
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    @tab 2/4 bpp not supported yet
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@item PPM          @tab X @tab X
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    @tab Portable PixelMap image
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@item PTX          @tab   @tab X
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    @tab V.Flash PTX format
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@item SGI          @tab X @tab X
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    @tab SGI RGB image format
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@item Sun Rasterfile  @tab   @tab X
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    @tab Sun RAS image format
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@item TIFF         @tab X @tab X
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    @tab YUV, JPEG and some extension is not supported yet.
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@item Truevision Targa  @tab X @tab X
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    @tab Targa (.TGA) image format
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@end multitable
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@code{X} means that encoding (resp. decoding) is supported.
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@code{E} means that support is provided through an external library.
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@section Video Codecs
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@multitable @columnfractions .4 .1 .1 .4
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@item Name @tab Encoding @tab Decoding @tab Comments
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@item 4X Movie               @tab     @tab  X
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    @tab Used in certain computer games.
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@item 8088flex TMV           @tab     @tab  X
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@item 8SVX exponential       @tab     @tab  X
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@item 8SVX fibonacci         @tab     @tab  X
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@item A64 multicolor         @tab  X  @tab
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    @tab Creates video suitable to be played on a commodore 64 (multicolor mode).
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@item American Laser Games MM  @tab    @tab X
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    @tab Used in games like Mad Dog McCree.
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@item AMV Video              @tab     @tab  X
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    @tab Used in Chinese MP3 players.
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@item ANSI/ASCII art         @tab     @tab  X
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@item Apple MJPEG-B          @tab     @tab  X
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@item Apple QuickDraw        @tab     @tab  X
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    @tab fourcc: qdrw
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@item Asus v1                @tab  X  @tab  X
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    @tab fourcc: ASV1
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@item Asus v2                @tab  X  @tab  X
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    @tab fourcc: ASV2
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@item ATI VCR1               @tab     @tab  X
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    @tab fourcc: VCR1
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@item ATI VCR2               @tab     @tab  X
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    @tab fourcc: VCR2
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@item Auravision Aura        @tab     @tab  X
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@item Auravision Aura 2      @tab     @tab  X
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@item Autodesk Animator Flic video  @tab     @tab  X
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@item Autodesk RLE           @tab     @tab  X
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    @tab fourcc: AASC
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@item AVS (Audio Video Standard) video  @tab     @tab  X
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    @tab Video encoding used by the Creature Shock game.
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@item Beam Software VB       @tab     @tab  X
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@item Bethesda VID video     @tab     @tab  X
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    @tab Used in some games from Bethesda Softworks.
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@item Bink Video             @tab     @tab  X
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@item Bitmap Brothers JV video  @tab   @tab X
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@item Brute Force & Ignorance   @tab   @tab X
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    @tab Used in the game Flash Traffic: City of Angels.
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@item C93 video              @tab     @tab  X
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    @tab Codec used in Cyberia game.
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@item CamStudio              @tab     @tab  X
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    @tab fourcc: CSCD
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@item CD+G                   @tab     @tab  X
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    @tab Video codec for CD+G karaoke disks
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@item Chinese AVS video      @tab  E  @tab  X
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    @tab AVS1-P2, JiZhun profile, encoding through external library libxavs
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@item Delphine Software International CIN video  @tab     @tab  X
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    @tab Codec used in Delphine Software International games.
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@item Cinepak                @tab     @tab  X
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@item Cirrus Logic AccuPak   @tab     @tab  X
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    @tab fourcc: CLJR
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@item Creative YUV (CYUV)    @tab     @tab  X
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@item DFA                    @tab     @tab  X
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    @tab Codec used in Chronomaster game.
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@item Dirac                  @tab  E  @tab  E
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    @tab supported through external libdirac/libschroedinger libraries
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@item Deluxe Paint Animation @tab     @tab  X
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@item DNxHD                  @tab   X @tab  X
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    @tab aka SMPTE VC3
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@item Duck TrueMotion 1.0   @tab     @tab  X
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    @tab fourcc: DUCK
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@item Duck TrueMotion 2.0    @tab     @tab  X
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    @tab fourcc: TM20
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@item DV (Digital Video)     @tab  X  @tab  X
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@item Feeble Files/ScummVM DXA  @tab     @tab  X
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    @tab Codec originally used in Feeble Files game.
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@item Electronic Arts CMV video  @tab     @tab  X
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    @tab Used in NHL 95 game.
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@item Electronic Arts Madcow video  @tab     @tab  X
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@item Electronic Arts TGV video  @tab     @tab  X
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@item Electronic Arts TGQ video  @tab     @tab  X
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@item Electronic Arts TQI video  @tab     @tab  X
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@item Escape 124             @tab     @tab  X
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@item FFmpeg video codec #1  @tab  X  @tab  X
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    @tab experimental lossless codec (fourcc: FFV1)
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@item Flash Screen Video v1  @tab  X  @tab  X
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    @tab fourcc: FSV1
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@item Flash Video (FLV)      @tab  X  @tab  X
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    @tab Sorenson H.263 used in Flash
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@item Fraps                  @tab     @tab  X
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@item H.261                  @tab  X  @tab  X
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@item H.263 / H.263-1996     @tab  X  @tab  X
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@item H.263+ / H.263-1998 / H.263 version 2  @tab  X  @tab  X
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@item H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10  @tab  E  @tab  X
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    @tab encoding supported through external library libx264
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@item H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)  @tab  E  @tab  X
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@item HuffYUV                @tab  X  @tab  X
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@item HuffYUV FFmpeg variant @tab  X  @tab  X
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@item IBM Ultimotion         @tab     @tab  X
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    @tab fourcc: ULTI
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@item id Cinematic video     @tab     @tab  X
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    @tab Used in Quake II.
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@item id RoQ video           @tab  X  @tab  X
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    @tab Used in Quake III, Jedi Knight 2, other computer games.
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@item IFF ILBM               @tab     @tab  X
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    @tab IFF interlaved bitmap
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@item IFF ByteRun1           @tab     @tab  X
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    @tab IFF run length encoded bitmap
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@item Intel H.263            @tab     @tab  X
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@item Intel Indeo 2          @tab     @tab  X
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@item Intel Indeo 3          @tab     @tab  X
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@item Intel Indeo 5          @tab     @tab  X
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@item Interplay C93          @tab     @tab  X
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    @tab Used in the game Cyberia from Interplay.
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@item Interplay MVE video    @tab     @tab  X
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    @tab Used in Interplay .MVE files.
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@item Karl Morton's video codec  @tab     @tab  X
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    @tab Codec used in Worms games.
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@item Kega Game Video (KGV1) @tab      @tab  X
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    @tab Kega emulator screen capture codec.
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@item Lagarith               @tab     @tab  X
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@item LCL (LossLess Codec Library) MSZH  @tab     @tab  X
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@item LCL (LossLess Codec Library) ZLIB  @tab  E  @tab  E
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@item LOCO                   @tab     @tab  X
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@item lossless MJPEG         @tab  X  @tab  X
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@item Microsoft RLE          @tab     @tab  X
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@item Microsoft Video 1      @tab     @tab  X
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@item Mimic                  @tab     @tab  X
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    @tab Used in MSN Messenger Webcam streams.
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@item Miro VideoXL           @tab     @tab  X
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    @tab fourcc: VIXL
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@item MJPEG (Motion JPEG)    @tab  X  @tab  X
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@item Motion Pixels video    @tab     @tab  X
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@item MPEG-1 video           @tab  X  @tab  X
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@item MPEG-1/2 video XvMC (X-Video Motion Compensation)  @tab     @tab  X
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@item MPEG-1/2 video (VDPAU acceleration)  @tab     @tab  X
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@item MPEG-2 video           @tab  X  @tab  X
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@item MPEG-4 part 2          @tab  X  @tab  X
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    @ libxvidcore can be used alternatively for encoding.
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@item MPEG-4 part 2 Microsoft variant version 1  @tab     @tab  X
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@item MPEG-4 part 2 Microsoft variant version 2  @tab  X  @tab  X
455
@item MPEG-4 part 2 Microsoft variant version 3  @tab  X  @tab  X
456
@item Nintendo Gamecube THP video  @tab     @tab  X
457
@item NuppelVideo/RTjpeg     @tab     @tab  X
458
    @tab Video encoding used in NuppelVideo files.
459
@item On2 VP3                @tab     @tab  X
460
    @tab still experimental
461
@item On2 VP5                @tab     @tab  X
462
    @tab fourcc: VP50
463
@item On2 VP6                @tab     @tab  X
464
    @tab fourcc: VP60,VP61,VP62
465
@item VP8                    @tab  E  @tab  X
466
    @tab fourcc: VP80, encoding supported through external library libvpx
467
@item planar RGB             @tab     @tab  X
468
    @tab fourcc: 8BPS
469
@item Q-team QPEG            @tab     @tab  X
470
    @tab fourccs: QPEG, Q1.0, Q1.1
471
@item QuickTime 8BPS video   @tab     @tab  X
472
@item QuickTime Animation (RLE) video  @tab  X  @tab  X
473
    @tab fourcc: 'rle '
474
@item QuickTime Graphics (SMC)  @tab     @tab  X
475
    @tab fourcc: 'smc '
476
@item QuickTime video (RPZA) @tab     @tab  X
477
    @tab fourcc: rpza
478
@item R10K AJA Kona 10-bit RGB Codec     @tab     @tab  X
479
@item R210 Quicktime Uncompressed RGB 10-bit     @tab     @tab  X
480
@item Raw Video              @tab  X  @tab  X
481
@item RealVideo 1.0          @tab  X  @tab  X
482
@item RealVideo 2.0          @tab  X  @tab  X
483
@item RealVideo 3.0          @tab     @tab  X
484
    @tab still far from ideal
485
@item RealVideo 4.0          @tab     @tab  X
486
@item Renderware TXD (TeXture Dictionary)  @tab     @tab  X
487
    @tab Texture dictionaries used by the Renderware Engine.
488
@item RL2 video              @tab     @tab  X
489
    @tab used in some games by Entertainment Software Partners
490
@item Sierra VMD video       @tab     @tab  X
491
    @tab Used in Sierra VMD files.
492
@item Smacker video          @tab     @tab  X
493
    @tab Video encoding used in Smacker.
494
@item SMPTE VC-1             @tab     @tab  X
495
@item Snow                   @tab  X  @tab  X
496
    @tab experimental wavelet codec (fourcc: SNOW)
497
@item Sony PlayStation MDEC (Motion DECoder)  @tab     @tab  X
498
@item Sorenson Vector Quantizer 1  @tab  X  @tab  X
499
    @tab fourcc: SVQ1
500
@item Sorenson Vector Quantizer 3  @tab     @tab  X
501
    @tab fourcc: SVQ3
502
@item Sunplus JPEG (SP5X)    @tab     @tab  X
503
    @tab fourcc: SP5X
504
@item TechSmith Screen Capture Codec  @tab     @tab  X
505
    @tab fourcc: TSCC
506
@item Theora                 @tab  E  @tab  X
507
    @tab encoding supported through external library libtheora
508
@item Tiertex Limited SEQ video  @tab     @tab  X
509
    @tab Codec used in DOS CD-ROM FlashBack game.
510
@item V210 Quicktime Uncompressed 4:2:2 10-bit     @tab  X  @tab  X
511
@item VMware Screen Codec / VMware Video  @tab     @tab  X
512
    @tab Codec used in videos captured by VMware.
513
@item Westwood Studios VQA (Vector Quantized Animation) video  @tab     @tab  X
514
@item Windows Media Video 7  @tab  X  @tab  X
515
@item Windows Media Video 8  @tab  X  @tab  X
516
@item Windows Media Video 9  @tab     @tab  X
517
    @tab not completely working
518
@item Wing Commander III / Xan  @tab     @tab  X
519
    @tab Used in Wing Commander III .MVE files.
520
@item Wing Commander IV / Xan  @tab     @tab  X
521
    @tab Used in Wing Commander IV.
522
@item Winnov WNV1            @tab     @tab  X
523
@item WMV7                   @tab  X  @tab  X
524
@item YAMAHA SMAF            @tab  X  @tab  X
525
@item Psygnosis YOP Video    @tab     @tab  X
526
@item ZLIB                   @tab  X  @tab  X
527
    @tab part of LCL, encoder experimental
528
@item Zip Motion Blocks Video  @tab   X @tab  X
529
    @tab Encoder works only in PAL8.
530
@end multitable
531

    
532
@code{X} means that encoding (resp. decoding) is supported.
533

    
534
@code{E} means that support is provided through an external library.
535

    
536
@section Audio Codecs
537

    
538
@multitable @columnfractions .4 .1 .1 .4
539
@item Name @tab Encoding @tab Decoding @tab Comments
540
@item 8SVX audio             @tab     @tab  X
541
@item AAC                    @tab  E  @tab  X
542
    @tab encoding supported through external library libfaac
543
@item AC-3                   @tab IX  @tab  X
544
@item ADPCM 4X Movie         @tab     @tab  X
545
@item ADPCM CDROM XA         @tab     @tab  X
546
@item ADPCM Creative Technology @tab     @tab  X
547
    @tab 16 -> 4, 8 -> 4, 8 -> 3, 8 -> 2
548
@item ADPCM Electronic Arts  @tab     @tab  X
549
    @tab Used in various EA titles.
550
@item ADPCM Electronic Arts Maxis CDROM XS  @tab     @tab  X
551
    @tab Used in Sim City 3000.
552
@item ADPCM Electronic Arts R1  @tab     @tab  X
553
@item ADPCM Electronic Arts R2  @tab     @tab  X
554
@item ADPCM Electronic Arts R3  @tab     @tab  X
555
@item ADPCM Electronic Arts XAS @tab     @tab  X
556
@item ADPCM G.722            @tab  X  @tab  X
557
@item ADPCM G.726            @tab  X  @tab  X
558
@item ADPCM IMA AMV          @tab     @tab  X
559
    @tab Used in AMV files
560
@item ADPCM IMA Electronic Arts EACS  @tab     @tab  X
561
@item ADPCM IMA Electronic Arts SEAD  @tab     @tab  X
562
@item ADPCM IMA Funcom       @tab     @tab  X
563
@item ADPCM IMA QuickTime    @tab  X  @tab  X
564
@item ADPCM IMA Loki SDL MJPEG  @tab     @tab  X
565
@item ADPCM IMA WAV          @tab  X  @tab  X
566
@item ADPCM IMA Westwood     @tab     @tab  X
567
@item ADPCM ISS IMA          @tab     @tab  X
568
    @tab Used in FunCom games.
569
@item ADPCM IMA Duck DK3     @tab     @tab  X
570
    @tab Used in some Sega Saturn console games.
571
@item ADPCM IMA Duck DK4     @tab     @tab  X
572
    @tab Used in some Sega Saturn console games.
573
@item ADPCM Microsoft        @tab  X  @tab  X
574
@item ADPCM MS IMA           @tab  X  @tab  X
575
@item ADPCM Nintendo Gamecube THP  @tab     @tab  X
576
@item ADPCM QT IMA           @tab  X  @tab  X
577
@item ADPCM SEGA CRI ADX     @tab  X  @tab  X
578
    @tab Used in Sega Dreamcast games.
579
@item ADPCM Shockwave Flash  @tab  X  @tab  X
580
@item ADPCM SMJPEG IMA       @tab     @tab  X
581
    @tab Used in certain Loki game ports.
582
@item ADPCM Sound Blaster Pro 2-bit  @tab     @tab  X
583
@item ADPCM Sound Blaster Pro 2.6-bit  @tab     @tab  X
584
@item ADPCM Sound Blaster Pro 4-bit  @tab     @tab  X
585
@item ADPCM Westwood Studios IMA @tab     @tab  X
586
    @tab Used in Westwood Studios games like Command and Conquer.
587
@item ADPCM Yamaha           @tab  X  @tab  X
588
@item AMR-NB                 @tab  E  @tab  X
589
    @tab encoding supported through external library libopencore-amrnb
590
@item AMR-WB                 @tab     @tab  X
591
@item Apple lossless audio   @tab  X  @tab  X
592
    @tab QuickTime fourcc 'alac'
593
@item Atrac 1                @tab     @tab  X
594
@item Atrac 3                @tab     @tab  X
595
@item Bink Audio             @tab     @tab  X
596
    @tab Used in Bink and Smacker files in many games.
597
@item Delphine Software International CIN audio  @tab     @tab  X
598
    @tab Codec used in Delphine Software International games.
599
@item COOK                   @tab     @tab  X
600
    @tab All versions except 5.1 are supported.
601
@item DCA (DTS Coherent Acoustics)  @tab     @tab  X
602
@item DPCM id RoQ            @tab  X  @tab  X
603
    @tab Used in Quake III, Jedi Knight 2, other computer games.
604
@item DPCM Interplay         @tab     @tab  X
605
    @tab Used in various Interplay computer games.
606
@item DPCM Sierra Online     @tab     @tab  X
607
    @tab Used in Sierra Online game audio files.
608
@item DPCM Sol               @tab     @tab  X
609
@item DPCM Xan               @tab     @tab  X
610
    @tab Used in Origin's Wing Commander IV AVI files.
611
@item DSP Group TrueSpeech   @tab     @tab  X
612
@item DV audio               @tab     @tab  X
613
@item Enhanced AC-3          @tab     @tab  X
614
@item FLAC (Free Lossless Audio Codec)  @tab  X  @tab  IX
615
@item GSM                    @tab  E  @tab  X
616
    @tab encoding supported through external library libgsm
617
@item GSM Microsoft variant  @tab  E  @tab  X
618
    @tab encoding supported through external library libgsm
619
@item IMC (Intel Music Coder)  @tab     @tab  X
620
@item MACE (Macintosh Audio Compression/Expansion) 3:1  @tab     @tab  X
621
@item MACE (Macintosh Audio Compression/Expansion) 6:1  @tab     @tab  X
622
@item MLP (Meridian Lossless Packing)  @tab     @tab  X
623
    @tab Used in DVD-Audio discs.
624
@item Monkey's Audio         @tab     @tab  X
625
    @tab Only versions 3.97-3.99 are supported.
626
@item MP1 (MPEG audio layer 1)  @tab     @tab IX
627
@item MP2 (MPEG audio layer 2)  @tab IX  @tab IX
628
@item MP3 (MPEG audio layer 3)  @tab  E  @tab IX
629
    @tab encoding supported through external library LAME, ADU MP3 and MP3onMP4 also supported
630
@item MPEG-4 Audio Lossless Coding (ALS)  @tab     @tab  X
631
@item Musepack SV7           @tab     @tab  X
632
@item Musepack SV8           @tab     @tab  X
633
@item Nellymoser Asao        @tab  X  @tab  X
634
@item PCM A-law              @tab  X  @tab  X
635
@item PCM mu-law             @tab  X  @tab  X
636
@item PCM 16-bit little-endian planar  @tab     @tab  X
637
@item PCM 32-bit floating point big-endian  @tab  X  @tab  X
638
@item PCM 32-bit floating point little-endian  @tab  X  @tab  X
639
@item PCM 64-bit floating point big-endian  @tab  X  @tab  X
640
@item PCM 64-bit floating point little-endian  @tab  X  @tab  X
641
@item PCM D-Cinema audio signed 24-bit   @tab  X  @tab  X
642
@item PCM signed 8-bit       @tab  X  @tab  X
643
@item PCM signed 16-bit big-endian  @tab  X  @tab  X
644
@item PCM signed 16-bit little-endian  @tab  X  @tab  X
645
@item PCM signed 24-bit big-endian  @tab  X  @tab  X
646
@item PCM signed 24-bit little-endian  @tab  X  @tab  X
647
@item PCM signed 32-bit big-endian  @tab  X  @tab  X
648
@item PCM signed 32-bit little-endian  @tab  X  @tab  X
649
@item PCM signed 16/20/24-bit big-endian in MPEG-TS  @tab     @tab  X
650
@item PCM unsigned 8-bit     @tab  X  @tab  X
651
@item PCM unsigned 16-bit big-endian  @tab  X  @tab  X
652
@item PCM unsigned 16-bit little-endian  @tab  X  @tab  X
653
@item PCM unsigned 24-bit big-endian  @tab  X  @tab  X
654
@item PCM unsigned 24-bit little-endian  @tab  X  @tab  X
655
@item PCM unsigned 32-bit big-endian  @tab  X  @tab  X
656
@item PCM unsigned 32-bit little-endian  @tab  X  @tab  X
657
@item PCM Zork               @tab  X  @tab  X
658
@item QCELP / PureVoice      @tab     @tab  X
659
@item QDesign Music Codec 2  @tab     @tab  X
660
    @tab There are still some distortions.
661
@item RealAudio 1.0 (14.4K)  @tab  X  @tab  X
662
    @tab Real 14400 bit/s codec
663
@item RealAudio 2.0 (28.8K)  @tab     @tab  X
664
    @tab Real 28800 bit/s codec
665
@item RealAudio 3.0 (dnet)   @tab IX  @tab  X
666
    @tab Real low bitrate AC-3 codec
667
@item RealAudio SIPR / ACELP.NET @tab     @tab  X
668
@item Shorten                @tab     @tab  X
669
@item Sierra VMD audio       @tab     @tab  X
670
    @tab Used in Sierra VMD files.
671
@item Smacker audio          @tab     @tab  X
672
@item Speex                  @tab     @tab  E
673
    @tab supported through external library libspeex
674
@item True Audio (TTA)       @tab     @tab  X
675
@item TrueHD                 @tab     @tab  X
676
    @tab Used in HD-DVD and Blu-Ray discs.
677
@item TwinVQ (VQF flavor)    @tab     @tab  X
678
@item Vorbis                 @tab  E  @tab  X
679
    @tab A native but very primitive encoder exists.
680
@item WavPack                @tab     @tab  X
681
@item Westwood Audio (SND1)  @tab     @tab  X
682
@item Windows Media Audio 1  @tab  X  @tab  X
683
@item Windows Media Audio 2  @tab  X  @tab  X
684
@item Windows Media Audio Pro @tab    @tab  X
685
@item Windows Media Audio Voice @tab  @tab  X
686
@end multitable
687

    
688
@code{X} means that encoding (resp. decoding) is supported.
689

    
690
@code{E} means that support is provided through an external library.
691

    
692
@code{I} means that an integer-only version is available, too (ensures high
693
performance on systems without hardware floating point support).
694

    
695
@section Subtitle Formats
696

    
697
@multitable @columnfractions .4 .1 .1 .1 .1
698
@item Name @tab Muxing @tab Demuxing @tab Encoding @tab Decoding
699
@item SSA/ASS      @tab X @tab X @tab X @tab X
700
@item DVB          @tab X @tab X @tab X @tab X
701
@item DVD          @tab X @tab X @tab X @tab X
702
@item PGS          @tab   @tab   @tab   @tab X
703
@item SubRip (SRT) @tab X @tab X @tab   @tab X
704
@item XSUB         @tab   @tab   @tab X @tab X
705
@end multitable
706

    
707
@code{X} means that the feature is supported.
708

    
709
@section Network Protocols
710

    
711
@multitable @columnfractions .4 .1
712
@item Name         @tab Support
713
@item Apple HTTP Live Streaming @tab X
714
@item file         @tab X
715
@item Gopher       @tab X
716
@item HTTP         @tab X
717
@item MMS          @tab X
718
@item pipe         @tab X
719
@item RTP          @tab X
720
@item TCP          @tab X
721
@item UDP          @tab X
722
@end multitable
723

    
724
@code{X} means that the protocol is supported.
725

    
726

    
727
@section Input/Output Devices
728

    
729
@multitable @columnfractions .4 .1 .1
730
@item Name              @tab Input  @tab Output
731
@item ALSA              @tab X      @tab X
732
@item BKTR              @tab X      @tab
733
@item DV1394            @tab X      @tab
734
@item JACK              @tab X      @tab
735
@item LIBDC1394         @tab X      @tab
736
@item OSS               @tab X      @tab X
737
@item Video4Linux       @tab X      @tab
738
@item Video4Linux2      @tab X      @tab
739
@item VfW capture       @tab X      @tab
740
@item X11 grabbing      @tab X      @tab
741
@end multitable
742

    
743
@code{X} means that input/output is supported.
744

    
745

    
746
@chapter Platform Specific information
747

    
748
@section DOS
749

    
750
Using a cross-compiler is preferred for various reasons.
751

    
752
@subsection DJGPP
753

    
754
Libav cannot be compiled because of broken system headers, add
755
@code{--extra-cflags=-U__STRICT_ANSI__} to the configure options as a
756
workaround.
757

    
758
@section OS/2
759

    
760
For information about compiling Libav on OS/2 see
761
@url{http://www.edm2.com/index.php/FFmpeg}.
762

    
763
@section Unix-like
764

    
765
Some parts of Libav cannot be built with version 2.15 of the GNU
766
assembler which is still provided by a few AMD64 distributions. To
767
make sure your compiler really uses the required version of gas
768
after a binutils upgrade, run:
769

    
770
@example
771
$(gcc -print-prog-name=as) --version
772
@end example
773

    
774
If not, then you should install a different compiler that has no
775
hard-coded path to gas. In the worst case pass @code{--disable-asm}
776
to configure.
777

    
778
@subsection BSD
779

    
780
BSD make will not build Libav, you need to install and use GNU Make
781
(@file{gmake}).
782

    
783
@subsubsection FreeBSD
784

    
785
FreeBSD will not compile out-of-the-box due to broken system headers.
786
Passing @code{--extra-cflags=-D__BSD_VISIBLE} to configure will work
787
around the problem. This may have unexpected sideeffects, so use it at
788
your own risk. If you care about FreeBSD, please make an attempt at
789
getting the system headers fixed.
790

    
791
@subsection (Open)Solaris
792

    
793
GNU Make is required to build Libav, so you have to invoke (@file{gmake}),
794
standard Solaris Make will not work. When building with a non-c99 front-end
795
(gcc, generic suncc) add either @code{--extra-libs=/usr/lib/values-xpg6.o}
796
or @code{--extra-libs=/usr/lib/64/values-xpg6.o} to the configure options
797
since the libc is not c99-compliant by default. The probes performed by
798
configure may raise an exception leading to the death of configure itself
799
due to a bug in the system shell. Simply invoke a different shell such as
800
bash directly to work around this:
801

    
802
@example
803
bash ./configure
804
@end example
805

    
806
@subsection Darwin (MacOS X, iPhone)
807

    
808
MacOS X on PowerPC or ARM (iPhone) requires a preprocessor from
809
@url{http://github.com/yuvi/gas-preprocessor} to build the optimized
810
assembler functions. Just download the Perl script and put it somewhere
811
in your PATH, Libav's configure will pick it up automatically.
812

    
813
@section Windows
814

    
815
@subsection Native Windows compilation
816

    
817
Libav can be built to run natively on Windows using the MinGW tools. Install
818
the latest versions of MSYS and MinGW from @url{http://www.mingw.org/}.
819
You can find detailed installation
820
instructions in the download section and the FAQ.
821

    
822
Libav does not build out-of-the-box with the packages the automated MinGW
823
installer provides. It also requires coreutils to be installed and many other
824
packages updated to the latest version. The minimum version for some packages
825
are listed below:
826

    
827
@itemize
828
@item bash 3.1
829
@item msys-make 3.81-2 (note: not mingw32-make)
830
@item w32api 3.13
831
@item mingw-runtime 3.15
832
@end itemize
833

    
834
Libav automatically passes @code{-fno-common} to the compiler to work around
835
a GCC bug (see @url{http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37216}).
836

    
837
Within the MSYS shell, configure and make with:
838

    
839
@example
840
./configure --enable-memalign-hack
841
make
842
make install
843
@end example
844

    
845
This will install @file{ffmpeg.exe} along with many other development files
846
to @file{/usr/local}. You may specify another install path using the
847
@code{--prefix} option in @file{configure}.
848

    
849
Notes:
850

    
851
@itemize
852

    
853
@item Building natively using MSYS can be sped up by disabling implicit rules
854
in the Makefile by calling @code{make -r} instead of plain @code{make}. This
855
speed up is close to non-existent for normal one-off builds and is only
856
noticeable when running make for a second time (for example in
857
@code{make install}).
858

    
859
@item In order to compile FFplay, you must have the MinGW development library
860
of SDL. Get it from @url{http://www.libsdl.org}.
861
Edit the @file{bin/sdl-config} script so that it points to the correct prefix
862
where SDL was installed. Verify that @file{sdl-config} can be launched from
863
the MSYS command line.
864

    
865
@item By using @code{./configure --enable-shared} when configuring Libav,
866
you can build libavutil, libavcodec and libavformat as DLLs.
867

    
868
@end itemize
869

    
870
@subsection Microsoft Visual C++ compatibility
871

    
872
As stated in the FAQ, Libav will not compile under MSVC++. However, if you
873
want to use the libav* libraries in your own applications, you can still
874
compile those applications using MSVC++. But the libav* libraries you link
875
to @emph{must} be built with MinGW. However, you will not be able to debug
876
inside the libav* libraries, since MSVC++ does not recognize the debug
877
symbols generated by GCC.
878
We strongly recommend you to move over from MSVC++ to MinGW tools.
879

    
880
This description of how to use the Libav libraries with MSVC++ is based on
881
Microsoft Visual C++ 2005 Express Edition. If you have a different version,
882
you might have to modify the procedures slightly.
883

    
884
@subsubsection Using static libraries
885

    
886
Assuming you have just built and installed Libav in @file{/usr/local}.
887

    
888
@enumerate
889

    
890
@item Create a new console application ("File / New / Project") and then
891
select "Win32 Console Application". On the appropriate page of the
892
Application Wizard, uncheck the "Precompiled headers" option.
893

    
894
@item Write the source code for your application, or, for testing, just
895
copy the code from an existing sample application into the source file
896
that MSVC++ has already created for you. For example, you can copy
897
@file{libavformat/output-example.c} from the Libav distribution.
898

    
899
@item Open the "Project / Properties" dialog box. In the "Configuration"
900
combo box, select "All Configurations" so that the changes you make will
901
affect both debug and release builds. In the tree view on the left hand
902
side, select "C/C++ / General", then edit the "Additional Include
903
Directories" setting to contain the path where the Libav includes were
904
installed (i.e. @file{c:\msys\1.0\local\include}).
905
Do not add MinGW's include directory here, or the include files will
906
conflict with MSVC's.
907

    
908
@item Still in the "Project / Properties" dialog box, select
909
"Linker / General" from the tree view and edit the
910
"Additional Library Directories" setting to contain the @file{lib}
911
directory where Libav was installed (i.e. @file{c:\msys\1.0\local\lib}),
912
the directory where MinGW libs are installed (i.e. @file{c:\mingw\lib}),
913
and the directory where MinGW's GCC libs are installed
914
(i.e. @file{C:\mingw\lib\gcc\mingw32\4.2.1-sjlj}). Then select
915
"Linker / Input" from the tree view, and add the files @file{libavformat.a},
916
@file{libavcodec.a}, @file{libavutil.a}, @file{libmingwex.a},
917
@file{libgcc.a}, and any other libraries you used (i.e. @file{libz.a})
918
to the end of "Additional Dependencies".
919

    
920
@item Now, select "C/C++ / Code Generation" from the tree view. Select
921
"Debug" in the "Configuration" combo box. Make sure that "Runtime
922
Library" is set to "Multi-threaded Debug DLL". Then, select "Release" in
923
the "Configuration" combo box and make sure that "Runtime Library" is
924
set to "Multi-threaded DLL".
925

    
926
@item Click "OK" to close the "Project / Properties" dialog box.
927

    
928
@item MSVC++ lacks some C99 header files that are fundamental for Libav.
929
Get msinttypes from @url{http://code.google.com/p/msinttypes/downloads/list}
930
and install it in MSVC++'s include directory
931
(i.e. @file{C:\Program Files\Microsoft Visual Studio 8\VC\include}).
932

    
933
@item MSVC++ also does not understand the @code{inline} keyword used by
934
Libav, so you must add this line before @code{#include}ing libav*:
935
@example
936
#define inline _inline
937
@end example
938

    
939
@item Build your application, everything should work.
940

    
941
@end enumerate
942

    
943
@subsubsection Using shared libraries
944

    
945
This is how to create DLL and LIB files that are compatible with MSVC++:
946

    
947
@enumerate
948

    
949
@item Add a call to @file{vcvars32.bat} (which sets up the environment
950
variables for the Visual C++ tools) as the first line of @file{msys.bat}.
951
The standard location for @file{vcvars32.bat} is
952
@file{C:\Program Files\Microsoft Visual Studio 8\VC\bin\vcvars32.bat},
953
and the standard location for @file{msys.bat} is @file{C:\msys\1.0\msys.bat}.
954
If this corresponds to your setup, add the following line as the first line
955
of @file{msys.bat}:
956

    
957
@example
958
call "C:\Program Files\Microsoft Visual Studio 8\VC\bin\vcvars32.bat"
959
@end example
960

    
961
Alternatively, you may start the @file{Visual Studio 2005 Command Prompt},
962
and run @file{c:\msys\1.0\msys.bat} from there.
963

    
964
@item Within the MSYS shell, run @code{lib.exe}. If you get a help message
965
from @file{Microsoft (R) Library Manager}, this means your environment
966
variables are set up correctly, the @file{Microsoft (R) Library Manager}
967
is on the path and will be used by Libav to create
968
MSVC++-compatible import libraries.
969

    
970
@item Build Libav with
971

    
972
@example
973
./configure --enable-shared --enable-memalign-hack
974
make
975
make install
976
@end example
977

    
978
Your install path (@file{/usr/local/} by default) should now have the
979
necessary DLL and LIB files under the @file{bin} directory.
980

    
981
@end enumerate
982

    
983
To use those files with MSVC++, do the same as you would do with
984
the static libraries, as described above. But in Step 4,
985
you should only need to add the directory where the LIB files are installed
986
(i.e. @file{c:\msys\usr\local\bin}). This is not a typo, the LIB files are
987
installed in the @file{bin} directory. And instead of adding the static
988
libraries (@file{libxxx.a} files) you should add the MSVC import libraries
989
(@file{avcodec.lib}, @file{avformat.lib}, and
990
@file{avutil.lib}). Note that you should not use the GCC import
991
libraries (@file{libxxx.dll.a} files), as these will give you undefined
992
reference errors. There should be no need for @file{libmingwex.a},
993
@file{libgcc.a}, and @file{wsock32.lib}, nor any other external library
994
statically linked into the DLLs. The @file{bin} directory contains a bunch
995
of DLL files, but the ones that are actually used to run your application
996
are the ones with a major version number in their filenames
997
(i.e. @file{avcodec-51.dll}).
998

    
999
Libav headers do not declare global data for Windows DLLs through the usual
1000
dllexport/dllimport interface. Such data will be exported properly while
1001
building, but to use them in your MSVC++ code you will have to edit the
1002
appropriate headers and mark the data as dllimport. For example, in
1003
libavutil/pixdesc.h you should have:
1004
@example
1005
extern __declspec(dllimport) const AVPixFmtDescriptor av_pix_fmt_descriptors[];
1006
@end example
1007

    
1008
Note that using import libraries created by dlltool requires
1009
the linker optimization option to be set to
1010
"References: Keep Unreferenced Data (/OPT:NOREF)", otherwise
1011
the resulting binaries will fail during runtime. This isn't
1012
required when using import libraries generated by lib.exe.
1013

    
1014
@subsection Cross compilation for Windows with Linux
1015

    
1016
You must use the MinGW cross compilation tools available at
1017
@url{http://www.mingw.org/}.
1018

    
1019
Then configure Libav with the following options:
1020
@example
1021
./configure --target-os=mingw32 --cross-prefix=i386-mingw32msvc-
1022
@end example
1023
(you can change the cross-prefix according to the prefix chosen for the
1024
MinGW tools).
1025

    
1026
Then you can easily test Libav with Wine
1027
(@url{http://www.winehq.com/}).
1028

    
1029
@subsection Compilation under Cygwin
1030

    
1031
Please use Cygwin 1.7.x as the obsolete 1.5.x Cygwin versions lack
1032
llrint() in its C library.
1033

    
1034
Install your Cygwin with all the "Base" packages, plus the
1035
following "Devel" ones:
1036
@example
1037
binutils, gcc4-core, make, git, mingw-runtime, texi2html
1038
@end example
1039

    
1040
And the following "Utils" one:
1041
@example
1042
diffutils
1043
@end example
1044

    
1045
Then run
1046

    
1047
@example
1048
./configure --enable-static --disable-shared
1049
@end example
1050

    
1051
to make a static build.
1052

    
1053
The current @code{gcc4-core} package is buggy and needs this flag to build
1054
shared libraries:
1055

    
1056
@example
1057
./configure --enable-shared --disable-static --extra-cflags=-fno-reorder-functions
1058
@end example
1059

    
1060
If you want to build Libav with additional libraries, download Cygwin
1061
"Devel" packages for Ogg and Vorbis from any Cygwin packages repository:
1062
@example
1063
libogg-devel, libvorbis-devel
1064
@end example
1065

    
1066
These library packages are only available from Cygwin Ports
1067
(@url{http://sourceware.org/cygwinports/}) :
1068

    
1069
@example
1070
yasm, libSDL-devel, libdirac-devel, libfaac-devel, libgsm-devel,
1071
libmp3lame-devel, libschroedinger1.0-devel, speex-devel, libtheora-devel,
1072
libxvidcore-devel
1073
@end example
1074

    
1075
The recommendation for libnut and x264 is to build them from source by
1076
yourself, as they evolve too quickly for Cygwin Ports to be up to date.
1077

    
1078
Cygwin 1.7.x has IPv6 support. You can add IPv6 to Cygwin 1.5.x by means
1079
of the @code{libgetaddrinfo-devel} package, available at Cygwin Ports.
1080

    
1081
@subsection Crosscompilation for Windows under Cygwin
1082

    
1083
With Cygwin you can create Windows binaries that do not need the cygwin1.dll.
1084

    
1085
Just install your Cygwin as explained before, plus these additional
1086
"Devel" packages:
1087
@example
1088
gcc-mingw-core, mingw-runtime, mingw-zlib
1089
@end example
1090

    
1091
and add some special flags to your configure invocation.
1092

    
1093
For a static build run
1094
@example
1095
./configure --target-os=mingw32 --enable-memalign-hack --enable-static --disable-shared --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
1096
@end example
1097

    
1098
and for a build with shared libraries
1099
@example
1100
./configure --target-os=mingw32 --enable-memalign-hack --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
1101
@end example
1102

    
1103
@bye