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[libav.git] / doc / general.texi
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1\input texinfo @c -*- texinfo -*-
2
3@settitle General Documentation
4@titlepage
d0e1cd3d 5@center @titlefont{General Documentation}
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6@end titlepage
7
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8@top
9
10@contents
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11
12@chapter external libraries
13
f8a45fa1 14Libav can be hooked up with a number of external libraries to add support
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15for more formats. None of them are used by default, their use has to be
16explicitly requested by passing the appropriate flags to @file{./configure}.
17
87a84431 18@section OpenCORE AMR
d0e1cd3d 19
f8a45fa1 20Libav can make use of the OpenCORE libraries for AMR-NB
87a84431 21decoding/encoding and AMR-WB decoding.
0b175caa 22
1eb0811e 23Go to @url{http://sourceforge.net/projects/opencore-amr/} and follow the instructions for
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24installing the libraries. Then pass @code{--enable-libopencore-amrnb} and/or
25@code{--enable-libopencore-amrwb} to configure to enable the libraries.
26
27Note that OpenCORE is under the Apache License 2.0 (see
28@url{http://www.apache.org/licenses/LICENSE-2.0} for details), which is
29incompatible with the LGPL version 2.1 and GPL version 2. You have to
f8a45fa1 30upgrade Libav's license to LGPL version 3 (or if you have enabled
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31GPL components, GPL version 3) to use it.
32
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33
34@chapter Supported File Formats and Codecs
35
0584b718 36You can use the @code{-formats} and @code{-codecs} options to have an exhaustive list.
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37
38@section File Formats
39
f8a45fa1 40Libav supports the following file formats through the @code{libavformat}
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41library:
42
43@multitable @columnfractions .4 .1 .1 .4
b3de4544 44@item Name @tab Encoding @tab Decoding @tab Comments
64c2f20a 45@item 4xm @tab @tab X
c6b2dc34 46 @tab 4X Technologies format, used in some games.
f0b19bd3 47@item 8088flex TMV @tab @tab X
574b183d 48@item Adobe Filmstrip @tab X @tab X
39271be4 49@item Audio IFF (AIFF) @tab X @tab X
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50@item American Laser Games MM @tab @tab X
51 @tab Multimedia format used in games like Mad Dog McCree.
39271be4 52@item 3GPP AMR @tab X @tab X
cd223e0b 53@item Apple HTTP Live Streaming @tab @tab X
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54@item ASF @tab X @tab X
55@item AVI @tab X @tab X
39271be4 56@item AVISynth @tab @tab X
c6b2dc34 57@item AVS @tab @tab X
d698c5d3 58 @tab Multimedia format used by the Creature Shock game.
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59@item Beam Software SIFF @tab @tab X
60 @tab Audio and video format used in some games by Beam Software.
61@item Bethesda Softworks VID @tab @tab X
d698c5d3 62 @tab Used in some games from Bethesda Softworks.
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63@item Bink @tab @tab X
64 @tab Multimedia format used by many games.
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65@item Bitmap Brothers JV @tab @tab X
66 @tab Used in Z and Z95 games.
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67@item Brute Force & Ignorance @tab @tab X
68 @tab Used in the game Flash Traffic: City of Angels.
69@item Interplay C93 @tab @tab X
d698c5d3 70 @tab Used in the game Cyberia from Interplay.
913c3e2c 71@item Delphine Software International CIN @tab @tab X
d698c5d3 72 @tab Multimedia format used by Delphine Software games.
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73@item CD+G @tab @tab X
74 @tab Video format used by CD+G karaoke disks
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75@item Core Audio Format @tab @tab X
76 @tab Apple Core Audio Format
39271be4 77@item CRC testing format @tab X @tab
913c3e2c 78@item Creative Voice @tab X @tab X
d698c5d3 79 @tab Created for the Sound Blaster Pro.
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80@item CRYO APC @tab @tab X
81 @tab Audio format used in some games by CRYO Interactive Entertainment.
39271be4 82@item D-Cinema audio @tab X @tab X
e6565055 83@item Deluxe Paint Animation @tab @tab X
913c3e2c 84@item DV video @tab X @tab X
c6b2dc34 85@item DXA @tab @tab X
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86 @tab This format is used in the non-Windows version of the Feeble Files
87 game and different game cutscenes repacked for use with ScummVM.
39271be4 88@item Electronic Arts cdata @tab @tab X
c6b2dc34 89@item Electronic Arts Multimedia @tab @tab X
d698c5d3 90 @tab Used in various EA games; files have extensions like WVE and UV2.
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91@item FFM (FFserver live feed) @tab X @tab X
92@item Flash (SWF) @tab X @tab X
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93@item Flash 9 (AVM2) @tab X @tab X
94 @tab Only embedded audio is decoded.
95@item FLI/FLC/FLX animation @tab @tab X
d698c5d3 96 @tab .fli/.flc files
dd2d651d 97@item Flash Video (FLV) @tab @tab X
d698c5d3 98 @tab Macromedia Flash video files
39271be4 99@item framecrc testing format @tab X @tab
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100@item FunCom ISS @tab @tab X
101 @tab Audio format used in various games from FunCom like The Longest Journey.
39271be4 102@item GIF Animation @tab X @tab
c6b2dc34 103@item GXF @tab X @tab X
d698c5d3 104 @tab General eXchange Format SMPTE 360M, used by Thomson Grass Valley
64c2f20a 105 playout servers.
dd2d651d 106@item id Quake II CIN video @tab @tab X
76ec3939 107@item id RoQ @tab X @tab X
d698c5d3 108 @tab Used in Quake III, Jedi Knight 2, other computer games.
3b39e273 109@item IEC61937 encapsulation @tab X @tab X
c6b2dc34 110@item IFF @tab @tab X
d698c5d3 111 @tab Interchange File Format
c6b2dc34 112@item Interplay MVE @tab @tab X
d698c5d3 113 @tab Format used in various Interplay computer games.
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114@item IV8 @tab @tab X
115 @tab A format generated by IndigoVision 8000 video server.
54bc6403 116@item IVF (On2) @tab X @tab X
173bb37f 117 @tab A format used by libvpx
c6b2dc34 118@item LMLM4 @tab @tab X
d698c5d3 119 @tab Used by Linux Media Labs MPEG-4 PCI boards
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120@item LXF @tab @tab X
121 @tab VR native stream format, used by Leitch/Harris' video servers.
64c2f20a 122@item Matroska @tab X @tab X
39271be4 123@item Matroska audio @tab X @tab
fd5b124d 124@item FFmpeg metadata @tab X @tab X
a4651511 125 @tab Metadata in text format.
913c3e2c 126@item MAXIS XA @tab @tab X
d698c5d3 127 @tab Used in Sim City 3000; file extension .xa.
61dc238b 128@item MD Studio @tab @tab X
9d09ebf1 129@item Mobotix .mxg @tab @tab X
64c2f20a 130@item Monkey's Audio @tab @tab X
822cc8f7 131@item Motion Pixels MVI @tab @tab X
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132@item MOV/QuickTime/MP4 @tab X @tab X
133 @tab 3GP, 3GP2, PSP, iPod variants supported
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134@item MP2 @tab X @tab X
135@item MP3 @tab X @tab X
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136@item MPEG-1 System @tab X @tab X
137 @tab muxed audio and video, VCD format supported
138@item MPEG-PS (program stream) @tab X @tab X
139 @tab also known as @code{VOB} file, SVCD and DVD format supported
140@item MPEG-TS (transport stream) @tab X @tab X
d698c5d3 141 @tab also known as DVB Transport Stream
c6b2dc34 142@item MPEG-4 @tab X @tab X
d698c5d3 143 @tab MPEG-4 is a variant of QuickTime.
39271be4 144@item MIME multipart JPEG @tab X @tab
bac4c85c 145@item MSN TCP webcam @tab @tab X
d698c5d3 146 @tab Used by MSN Messenger webcam streams.
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147@item MTV @tab @tab X
148@item Musepack @tab @tab X
149@item Musepack SV8 @tab @tab X
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150@item Material eXchange Format (MXF) @tab X @tab X
151 @tab SMPTE 377M, used by D-Cinema, broadcast industry.
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152@item Material eXchange Format (MXF), D-10 Mapping @tab X @tab X
153 @tab SMPTE 386M, D-10/IMX Mapping.
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154@item NC camera feed @tab @tab X
155 @tab NC (AVIP NC4600) camera streams
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156@item NTT TwinVQ (VQF) @tab @tab X
157 @tab Nippon Telegraph and Telephone Corporation TwinVQ.
913c3e2c 158@item Nullsoft Streaming Video @tab @tab X
39271be4 159@item NuppelVideo @tab @tab X
c6b2dc34 160@item NUT @tab X @tab X
d698c5d3 161 @tab NUT Open Container Format
39271be4 162@item Ogg @tab X @tab X
913c3e2c 163@item TechnoTrend PVA @tab @tab X
d698c5d3 164 @tab Used by TechnoTrend DVB PCI boards.
cdce0fb8 165@item QCP @tab @tab X
43dedc1e 166@item raw ADTS (AAC) @tab X @tab X
76ec3939 167@item raw AC-3 @tab X @tab X
de295976 168@item raw Chinese AVS video @tab X @tab X
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169@item raw CRI ADX @tab X @tab X
170@item raw Dirac @tab X @tab X
171@item raw DNxHD @tab X @tab X
172@item raw DTS @tab X @tab X
173@item raw E-AC-3 @tab X @tab X
174@item raw FLAC @tab X @tab X
175@item raw GSM @tab @tab X
176@item raw H.261 @tab X @tab X
177@item raw H.263 @tab X @tab X
178@item raw H.264 @tab X @tab X
179@item raw Ingenient MJPEG @tab @tab X
76ec3939 180@item raw MJPEG @tab X @tab X
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181@item raw MLP @tab @tab X
182@item raw MPEG @tab @tab X
183@item raw MPEG-1 @tab @tab X
184@item raw MPEG-2 @tab @tab X
185@item raw MPEG-4 @tab X @tab X
186@item raw NULL @tab X @tab
81b55ee5 187@item raw video @tab X @tab X
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188@item raw id RoQ @tab X @tab
189@item raw Shorten @tab @tab X
23d9cc45 190@item raw TrueHD @tab X @tab X
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191@item raw VC-1 @tab @tab X
192@item raw PCM A-law @tab X @tab X
193@item raw PCM mu-law @tab X @tab X
194@item raw PCM signed 8 bit @tab X @tab X
195@item raw PCM signed 16 bit big-endian @tab X @tab X
196@item raw PCM signed 16 bit little-endian @tab X @tab X
197@item raw PCM signed 24 bit big-endian @tab X @tab X
198@item raw PCM signed 24 bit little-endian @tab X @tab X
199@item raw PCM signed 32 bit big-endian @tab X @tab X
200@item raw PCM signed 32 bit little-endian @tab X @tab X
201@item raw PCM unsigned 8 bit @tab X @tab X
202@item raw PCM unsigned 16 bit big-endian @tab X @tab X
203@item raw PCM unsigned 16 bit little-endian @tab X @tab X
204@item raw PCM unsigned 24 bit big-endian @tab X @tab X
205@item raw PCM unsigned 24 bit little-endian @tab X @tab X
206@item raw PCM unsigned 32 bit big-endian @tab X @tab X
207@item raw PCM unsigned 32 bit little-endian @tab X @tab X
208@item raw PCM floating-point 32 bit big-endian @tab X @tab X
209@item raw PCM floating-point 32 bit little-endian @tab X @tab X
210@item raw PCM floating-point 64 bit big-endian @tab X @tab X
211@item raw PCM floating-point 64 bit little-endian @tab X @tab X
39271be4 212@item RDT @tab @tab X
913c3e2c 213@item REDCODE R3D @tab @tab X
7eb68edb 214 @tab File format used by RED Digital cameras, contains JPEG 2000 frames and PCM audio.
64c2f20a 215@item RealMedia @tab X @tab X
39271be4 216@item Redirector @tab @tab X
913c3e2c 217@item Renderware TeXture Dictionary @tab @tab X
c6b2dc34 218@item RL2 @tab @tab X
d698c5d3 219 @tab Audio and video format used in some games by Entertainment Software Partners.
39271be4 220@item RPL/ARMovie @tab @tab X
e8723e24 221@item Lego Mindstorms RSO @tab X @tab X
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222@item RTMP @tab X @tab X
223 @tab Output is performed by publishing stream to RTMP server
44594cc7 224@item RTP @tab X @tab X
6f5a3d0a 225@item RTSP @tab X @tab X
01c8d258 226@item SAP @tab X @tab X
39271be4 227@item SDP @tab @tab X
c6b2dc34 228@item Sega FILM/CPK @tab @tab X
d698c5d3 229 @tab Used in many Sega Saturn console games.
913c3e2c 230@item Sierra SOL @tab @tab X
d698c5d3 231 @tab .sol files used in Sierra Online games.
c6b2dc34 232@item Sierra VMD @tab @tab X
d698c5d3 233 @tab Used in Sierra CD-ROM games.
c6b2dc34 234@item Smacker @tab @tab X
d698c5d3 235 @tab Multimedia format used by many games.
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236@item Sony OpenMG (OMA) @tab @tab X
237 @tab Audio format used in Sony Sonic Stage and Sony Vegas.
238@item Sony PlayStation STR @tab @tab X
740e89cf 239@item Sony Wave64 (W64) @tab @tab X
cbfe5bee 240@item SoX native format @tab X @tab X
64c2f20a 241@item SUN AU format @tab X @tab X
5a717094 242@item Text files @tab @tab X
c6b2dc34 243@item THP @tab @tab X
d698c5d3 244 @tab Used on the Nintendo GameCube.
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245@item Tiertex Limited SEQ @tab @tab X
246 @tab Tiertex .seq files used in the DOS CD-ROM version of the game Flashback.
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247@item True Audio @tab @tab X
248@item VC-1 test bitstream @tab X @tab X
c6b2dc34 249@item WAV @tab X @tab X
39271be4 250@item WavPack @tab @tab X
316d6c15 251@item WebM @tab X @tab X
82ca054a 252@item Windows Televison (WTV) @tab @tab X
913c3e2c 253@item Wing Commander III movie @tab @tab X
d698c5d3 254 @tab Multimedia format used in Origin's Wing Commander III computer game.
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255@item Westwood Studios audio @tab @tab X
256 @tab Multimedia format used in Westwood Studios games.
257@item Westwood Studios VQA @tab @tab X
258 @tab Multimedia format used in Westwood Studios games.
39271be4 259@item YUV4MPEG pipe @tab X @tab X
148bcae9 260@item Psygnosis YOP @tab @tab X
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261@end multitable
262
263@code{X} means that encoding (resp. decoding) is supported.
264
265@section Image Formats
266
267FFmpeg can read and write images for each frame of a video sequence. The
268following image formats are supported:
269
270@multitable @columnfractions .4 .1 .1 .4
b3de4544 271@item Name @tab Encoding @tab Decoding @tab Comments
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272@item .Y.U.V @tab X @tab X
273 @tab one raw file per component
274@item animated GIF @tab X @tab X
275 @tab Only uncompressed GIFs are generated.
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276@item BMP @tab X @tab X
277 @tab Microsoft BMP image
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278@item DPX @tab @tab X
279 @tab Digital Picture Exchange
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280@item JPEG @tab X @tab X
281 @tab Progressive JPEG is not supported.
282@item JPEG 2000 @tab @tab E
283 @tab decoding supported through external library libopenjpeg
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284@item JPEG-LS @tab X @tab X
285@item LJPEG @tab X @tab
286 @tab Lossless JPEG
ddea12a6 287@item PAM @tab X @tab X
9db80acb 288 @tab PAM is a PNM extension with alpha support.
ddea12a6 289@item PBM @tab X @tab X
f2937cc6 290 @tab Portable BitMap image
effcedf7 291@item PCX @tab X @tab X
9db80acb 292 @tab PC Paintbrush
ddea12a6 293@item PGM @tab X @tab X
314511ab 294 @tab Portable GrayMap image
ddea12a6 295@item PGMYUV @tab X @tab X
9db80acb 296 @tab PGM with U and V components in YUV 4:2:0
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297@item PIC @tab @tab X
298 @tab Pictor/PC Paint
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299@item PNG @tab X @tab X
300 @tab 2/4 bpp not supported yet
ddea12a6 301@item PPM @tab X @tab X
314511ab 302 @tab Portable PixelMap image
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303@item PTX @tab @tab X
304 @tab V.Flash PTX format
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305@item SGI @tab X @tab X
306 @tab SGI RGB image format
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307@item Sun Rasterfile @tab @tab X
308 @tab Sun RAS image format
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309@item TIFF @tab X @tab X
310 @tab YUV, JPEG and some extension is not supported yet.
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311@item Truevision Targa @tab X @tab X
312 @tab Targa (.TGA) image format
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313@end multitable
314
315@code{X} means that encoding (resp. decoding) is supported.
316
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317@code{E} means that support is provided through an external library.
318
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319@section Video Codecs
320
321@multitable @columnfractions .4 .1 .1 .4
b3de4544 322@item Name @tab Encoding @tab Decoding @tab Comments
9510f59a 323@item 4X Movie @tab @tab X
d698c5d3 324 @tab Used in certain computer games.
f0b19bd3 325@item 8088flex TMV @tab @tab X
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326@item 8SVX exponential @tab @tab X
327@item 8SVX fibonacci @tab @tab X
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328@item A64 multicolor @tab X @tab
329 @tab Creates video suitable to be played on a commodore 64 (multicolor mode).
913c3e2c 330@item American Laser Games MM @tab @tab X
d698c5d3 331 @tab Used in games like Mad Dog McCree.
a1c5b6ec 332@item AMV Video @tab @tab X
d698c5d3 333 @tab Used in Chinese MP3 players.
5a717094 334@item ANSI/ASCII art @tab @tab X
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335@item Apple MJPEG-B @tab @tab X
336@item Apple QuickDraw @tab @tab X
d698c5d3 337 @tab fourcc: qdrw
d66d8b83 338@item Asus v1 @tab X @tab X
d698c5d3 339 @tab fourcc: ASV1
d66d8b83 340@item Asus v2 @tab X @tab X
d698c5d3 341 @tab fourcc: ASV2
d66d8b83 342@item ATI VCR1 @tab @tab X
d698c5d3 343 @tab fourcc: VCR1
d66d8b83 344@item ATI VCR2 @tab @tab X
d698c5d3 345 @tab fourcc: VCR2
588f8cd8 346@item Auravision Aura @tab @tab X
ce293510 347@item Auravision Aura 2 @tab @tab X
dd2d651d 348@item Autodesk Animator Flic video @tab @tab X
d66d8b83 349@item Autodesk RLE @tab @tab X
d698c5d3 350 @tab fourcc: AASC
9510f59a 351@item AVS (Audio Video Standard) video @tab @tab X
d698c5d3 352 @tab Video encoding used by the Creature Shock game.
68dddf53 353@item Beam Software VB @tab @tab X
9510f59a 354@item Bethesda VID video @tab @tab X
d698c5d3 355 @tab Used in some games from Bethesda Softworks.
342c7dfd 356@item Bink Video @tab @tab X
402f9ad5 357@item Bitmap Brothers JV video @tab @tab X
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358@item Brute Force & Ignorance @tab @tab X
359 @tab Used in the game Flash Traffic: City of Angels.
bac4c85c 360@item C93 video @tab @tab X
d698c5d3 361 @tab Codec used in Cyberia game.
d66d8b83 362@item CamStudio @tab @tab X
d698c5d3 363 @tab fourcc: CSCD
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364@item CD+G @tab @tab X
365 @tab Video codec for CD+G karaoke disks
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366@item Chinese AVS video @tab E @tab X
367 @tab AVS1-P2, JiZhun profile, encoding through external library libxavs
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368@item Delphine Software International CIN video @tab @tab X
369 @tab Codec used in Delphine Software International games.
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370@item Cinepak @tab @tab X
371@item Cirrus Logic AccuPak @tab @tab X
d698c5d3 372 @tab fourcc: CLJR
9510f59a 373@item Creative YUV (CYUV) @tab @tab X
82ced5a9 374@item Dirac @tab E @tab E
360f980b 375 @tab supported through external libdirac/libschroedinger libraries
a1ae40fd 376@item Deluxe Paint Animation @tab @tab X
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377@item DNxHD @tab X @tab X
378 @tab aka SMPTE VC3
68dddf53 379@item Duck TrueMotion 1.0 @tab @tab X
d698c5d3 380 @tab fourcc: DUCK
68dddf53 381@item Duck TrueMotion 2.0 @tab @tab X
d698c5d3 382 @tab fourcc: TM20
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383@item DV (Digital Video) @tab X @tab X
384@item Feeble Files/ScummVM DXA @tab @tab X
d698c5d3 385 @tab Codec originally used in Feeble Files game.
9510f59a 386@item Electronic Arts CMV video @tab @tab X
d698c5d3 387 @tab Used in NHL 95 game.
c63ea92b 388@item Electronic Arts Madcow video @tab @tab X
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389@item Electronic Arts TGV video @tab @tab X
390@item Electronic Arts TGQ video @tab @tab X
391@item Electronic Arts TQI video @tab @tab X
392@item Escape 124 @tab @tab X
f4258b13 393@item FFmpeg video codec #1 @tab X @tab X
d698c5d3 394 @tab experimental lossless codec (fourcc: FFV1)
dd2d651d 395@item Flash Screen Video v1 @tab X @tab X
d698c5d3 396 @tab fourcc: FSV1
dd2d651d 397@item Flash Video (FLV) @tab X @tab X
d698c5d3 398 @tab Sorenson H.263 used in Flash
dd2d651d 399@item Fraps @tab @tab X
d66d8b83 400@item H.261 @tab X @tab X
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401@item H.263 / H.263-1996 @tab X @tab X
402@item H.263+ / H.263-1998 / H.263 version 2 @tab X @tab X
403@item H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 @tab E @tab X
360f980b 404 @tab encoding supported through external library libx264
dd2d651d 405@item H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration) @tab E @tab X
d66d8b83 406@item HuffYUV @tab X @tab X
dd2d651d 407@item HuffYUV FFmpeg variant @tab X @tab X
d66d8b83 408@item IBM Ultimotion @tab @tab X
d698c5d3 409 @tab fourcc: ULTI
bac4c85c 410@item id Cinematic video @tab @tab X
d698c5d3 411 @tab Used in Quake II.
a1c5b6ec 412@item id RoQ video @tab X @tab X
d698c5d3 413 @tab Used in Quake III, Jedi Knight 2, other computer games.
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414@item IFF ILBM @tab @tab X
415 @tab IFF interlaved bitmap
416@item IFF ByteRun1 @tab @tab X
417 @tab IFF run length encoded bitmap
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418@item Intel H.263 @tab @tab X
419@item Intel Indeo 2 @tab @tab X
d66d8b83 420@item Intel Indeo 3 @tab @tab X
5bebe94d 421@item Intel Indeo 5 @tab @tab X
dd2d651d 422@item Interplay C93 @tab @tab X
9510f59a 423 @tab Used in the game Cyberia from Interplay.
dd2d651d 424@item Interplay MVE video @tab @tab X
d698c5d3 425 @tab Used in Interplay .MVE files.
dd2d651d 426@item Karl Morton's video codec @tab @tab X
d698c5d3 427 @tab Codec used in Worms games.
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428@item Kega Game Video (KGV1) @tab @tab X
429 @tab Kega emulator screen capture codec.
d267b339 430@item Lagarith @tab @tab X
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431@item LCL (LossLess Codec Library) MSZH @tab @tab X
432@item LCL (LossLess Codec Library) ZLIB @tab E @tab E
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433@item LOCO @tab @tab X
434@item lossless MJPEG @tab X @tab X
435@item Microsoft RLE @tab @tab X
dd2d651d 436@item Microsoft Video 1 @tab @tab X
d66d8b83 437@item Mimic @tab @tab X
d698c5d3 438 @tab Used in MSN Messenger Webcam streams.
d66d8b83 439@item Miro VideoXL @tab @tab X
d698c5d3 440 @tab fourcc: VIXL
eacf8613 441@item MJPEG (Motion JPEG) @tab X @tab X
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442@item Motion Pixels video @tab @tab X
443@item MPEG-1 video @tab X @tab X
444@item MPEG-1/2 video XvMC (X-Video Motion Compensation) @tab @tab X
445@item MPEG-1/2 video (VDPAU acceleration) @tab @tab X
446@item MPEG-2 video @tab X @tab X
447@item MPEG-4 part 2 @tab X @tab X
448 @ libxvidcore can be used alternatively for encoding.
f7af2c1d 449@item MPEG-4 part 2 Microsoft variant version 1 @tab @tab X
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450@item MPEG-4 part 2 Microsoft variant version 2 @tab X @tab X
451@item MPEG-4 part 2 Microsoft variant version 3 @tab X @tab X
eacf8613 452@item Nintendo Gamecube THP video @tab @tab X
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453@item NuppelVideo/RTjpeg @tab @tab X
454 @tab Video encoding used in NuppelVideo files.
d66d8b83 455@item On2 VP3 @tab @tab X
d698c5d3 456 @tab still experimental
d66d8b83 457@item On2 VP5 @tab @tab X
d698c5d3 458 @tab fourcc: VP50
d66d8b83 459@item On2 VP6 @tab @tab X
d698c5d3 460 @tab fourcc: VP60,VP61,VP62
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461@item VP8 @tab E @tab X
462 @tab fourcc: VP80, encoding supported through external library libvpx
d66d8b83 463@item planar RGB @tab @tab X
d698c5d3 464 @tab fourcc: 8BPS
a1c5b6ec 465@item Q-team QPEG @tab @tab X
d698c5d3 466 @tab fourccs: QPEG, Q1.0, Q1.1
9510f59a 467@item QuickTime 8BPS video @tab @tab X
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468@item QuickTime Animation (RLE) video @tab X @tab X
469 @tab fourcc: 'rle '
470@item QuickTime Graphics (SMC) @tab @tab X
471 @tab fourcc: 'smc '
472@item QuickTime video (RPZA) @tab @tab X
473 @tab fourcc: rpza
43836928 474@item R10K AJA Kona 10-bit RGB Codec @tab @tab X
4aaab0a3 475@item R210 Quicktime Uncompressed RGB 10-bit @tab @tab X
a1c5b6ec 476@item Raw Video @tab X @tab X
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477@item RealVideo 1.0 @tab X @tab X
478@item RealVideo 2.0 @tab X @tab X
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479@item RealVideo 3.0 @tab @tab X
480 @tab still far from ideal
11c0f9ec 481@item RealVideo 4.0 @tab @tab X
68dddf53 482@item Renderware TXD (TeXture Dictionary) @tab @tab X
d698c5d3 483 @tab Texture dictionaries used by the Renderware Engine.
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484@item RL2 video @tab @tab X
485 @tab used in some games by Entertainment Software Partners
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486@item Sierra VMD video @tab @tab X
487 @tab Used in Sierra VMD files.
bac4c85c 488@item Smacker video @tab @tab X
d698c5d3 489 @tab Video encoding used in Smacker.
68dddf53 490@item SMPTE VC-1 @tab @tab X
d66d8b83 491@item Snow @tab X @tab X
d698c5d3 492 @tab experimental wavelet codec (fourcc: SNOW)
eacf8613 493@item Sony PlayStation MDEC (Motion DECoder) @tab @tab X
a1c5b6ec 494@item Sorenson Vector Quantizer 1 @tab X @tab X
d698c5d3 495 @tab fourcc: SVQ1
a1c5b6ec 496@item Sorenson Vector Quantizer 3 @tab @tab X
d698c5d3 497 @tab fourcc: SVQ3
a1c5b6ec 498@item Sunplus JPEG (SP5X) @tab @tab X
d698c5d3 499 @tab fourcc: SP5X
68dddf53 500@item TechSmith Screen Capture Codec @tab @tab X
d698c5d3 501 @tab fourcc: TSCC
82ced5a9 502@item Theora @tab E @tab X
360f980b 503 @tab encoding supported through external library libtheora
a1c5b6ec 504@item Tiertex Limited SEQ video @tab @tab X
d698c5d3 505 @tab Codec used in DOS CD-ROM FlashBack game.
ca0bb1c4 506@item V210 Quicktime Uncompressed 4:2:2 10-bit @tab X @tab X
eacf8613 507@item VMware Screen Codec / VMware Video @tab @tab X
d698c5d3 508 @tab Codec used in videos captured by VMware.
eacf8613 509@item Westwood Studios VQA (Vector Quantized Animation) video @tab @tab X
dd2d651d 510@item Windows Media Video 7 @tab X @tab X
eacf8613 511@item Windows Media Video 8 @tab X @tab X
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512@item Windows Media Video 9 @tab @tab X
513 @tab not completely working
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514@item Wing Commander III / Xan @tab @tab X
515 @tab Used in Wing Commander III .MVE files.
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516@item Wing Commander IV / Xan @tab @tab X
517 @tab Used in Wing Commander IV.
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518@item Winnov WNV1 @tab @tab X
519@item WMV7 @tab X @tab X
39271be4 520@item YAMAHA SMAF @tab X @tab X
148bcae9 521@item Psygnosis YOP Video @tab @tab X
d66d8b83 522@item ZLIB @tab X @tab X
d698c5d3 523 @tab part of LCL, encoder experimental
eacf8613 524@item Zip Motion Blocks Video @tab X @tab X
d698c5d3 525 @tab Encoder works only in PAL8.
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526@end multitable
527
528@code{X} means that encoding (resp. decoding) is supported.
529
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530@code{E} means that support is provided through an external library.
531
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532@section Audio Codecs
533
485ec4f1 534@multitable @columnfractions .4 .1 .1 .4
b3de4544 535@item Name @tab Encoding @tab Decoding @tab Comments
16d81b27 536@item 8SVX audio @tab @tab X
82ced5a9 537@item AAC @tab E @tab X
360f980b 538 @tab encoding supported through external library libfaac
c76d1bb2 539@item AC-3 @tab IX @tab X
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540@item ADPCM 4X Movie @tab @tab X
541@item ADPCM CDROM XA @tab @tab X
542@item ADPCM Creative Technology @tab @tab X
543 @tab 16 -> 4, 8 -> 4, 8 -> 3, 8 -> 2
544@item ADPCM Electronic Arts @tab @tab X
545 @tab Used in various EA titles.
546@item ADPCM Electronic Arts Maxis CDROM XS @tab @tab X
547 @tab Used in Sim City 3000.
548@item ADPCM Electronic Arts R1 @tab @tab X
549@item ADPCM Electronic Arts R2 @tab @tab X
550@item ADPCM Electronic Arts R3 @tab @tab X
551@item ADPCM Electronic Arts XAS @tab @tab X
21e681ba 552@item ADPCM G.722 @tab X @tab X
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553@item ADPCM G.726 @tab X @tab X
554@item ADPCM IMA AMV @tab @tab X
555 @tab Used in AMV files
556@item ADPCM IMA Electronic Arts EACS @tab @tab X
557@item ADPCM IMA Electronic Arts SEAD @tab @tab X
558@item ADPCM IMA Funcom @tab @tab X
559@item ADPCM IMA QuickTime @tab X @tab X
560@item ADPCM IMA Loki SDL MJPEG @tab @tab X
561@item ADPCM IMA WAV @tab X @tab X
562@item ADPCM IMA Westwood @tab @tab X
563@item ADPCM ISS IMA @tab @tab X
564 @tab Used in FunCom games.
565@item ADPCM IMA Duck DK3 @tab @tab X
566 @tab Used in some Sega Saturn console games.
567@item ADPCM IMA Duck DK4 @tab @tab X
568 @tab Used in some Sega Saturn console games.
569@item ADPCM Microsoft @tab X @tab X
570@item ADPCM MS IMA @tab X @tab X
571@item ADPCM Nintendo Gamecube THP @tab @tab X
572@item ADPCM QT IMA @tab X @tab X
573@item ADPCM SEGA CRI ADX @tab X @tab X
574 @tab Used in Sega Dreamcast games.
575@item ADPCM Shockwave Flash @tab X @tab X
576@item ADPCM SMJPEG IMA @tab @tab X
577 @tab Used in certain Loki game ports.
578@item ADPCM Sound Blaster Pro 2-bit @tab @tab X
579@item ADPCM Sound Blaster Pro 2.6-bit @tab @tab X
580@item ADPCM Sound Blaster Pro 4-bit @tab @tab X
581@item ADPCM Westwood Studios IMA @tab @tab X
582 @tab Used in Westwood Studios games like Command and Conquer.
583@item ADPCM Yamaha @tab X @tab X
2bcaf2fe 584@item AMR-NB @tab E @tab X
4fe3edaa 585 @tab encoding supported through external library libopencore-amrnb
2b2a597e 586@item AMR-WB @tab @tab X
833e90dd 587@item Apple lossless audio @tab X @tab X
d698c5d3 588 @tab QuickTime fourcc 'alac'
61dc238b 589@item Atrac 1 @tab @tab X
9510f59a 590@item Atrac 3 @tab @tab X
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591@item Bink Audio @tab @tab X
592 @tab Used in Bink and Smacker files in many games.
9510f59a 593@item Delphine Software International CIN audio @tab @tab X
d698c5d3 594 @tab Codec used in Delphine Software International games.
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595@item COOK @tab @tab X
596 @tab All versions except 5.1 are supported.
9510f59a 597@item DCA (DTS Coherent Acoustics) @tab @tab X
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598@item DPCM id RoQ @tab X @tab X
599 @tab Used in Quake III, Jedi Knight 2, other computer games.
600@item DPCM Interplay @tab @tab X
601 @tab Used in various Interplay computer games.
602@item DPCM Sierra Online @tab @tab X
603 @tab Used in Sierra Online game audio files.
604@item DPCM Sol @tab @tab X
605@item DPCM Xan @tab @tab X
eff9011d 606 @tab Used in Origin's Wing Commander IV AVI files.
16d81b27 607@item DSP Group TrueSpeech @tab @tab X
16d81b27 608@item DV audio @tab @tab X
44723c84 609@item Enhanced AC-3 @tab @tab X
dd2d651d 610@item FLAC (Free Lossless Audio Codec) @tab X @tab IX
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611@item GSM @tab E @tab X
612 @tab encoding supported through external library libgsm
613@item GSM Microsoft variant @tab E @tab X
614 @tab encoding supported through external library libgsm
dd2d651d 615@item IMC (Intel Music Coder) @tab @tab X
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616@item MACE (Macintosh Audio Compression/Expansion) 3:1 @tab @tab X
617@item MACE (Macintosh Audio Compression/Expansion) 6:1 @tab @tab X
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618@item MLP (Meridian Lossless Packing) @tab @tab X
619 @tab Used in DVD-Audio discs.
16d81b27 620@item Monkey's Audio @tab @tab X
d698c5d3 621 @tab Only versions 3.97-3.99 are supported.
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622@item MP1 (MPEG audio layer 1) @tab @tab IX
623@item MP2 (MPEG audio layer 2) @tab IX @tab IX
624@item MP3 (MPEG audio layer 3) @tab E @tab IX
625 @tab encoding supported through external library LAME, ADU MP3 and MP3onMP4 also supported
99971952 626@item MPEG-4 Audio Lossless Coding (ALS) @tab @tab X
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627@item Musepack SV7 @tab @tab X
628@item Musepack SV8 @tab @tab X
641992de 629@item Nellymoser Asao @tab X @tab X
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630@item PCM A-law @tab X @tab X
631@item PCM mu-law @tab X @tab X
632@item PCM 16-bit little-endian planar @tab @tab X
633@item PCM 32-bit floating point big-endian @tab X @tab X
634@item PCM 32-bit floating point little-endian @tab X @tab X
635@item PCM 64-bit floating point big-endian @tab X @tab X
636@item PCM 64-bit floating point little-endian @tab X @tab X
637@item PCM D-Cinema audio signed 24-bit @tab X @tab X
638@item PCM signed 8-bit @tab X @tab X
639@item PCM signed 16-bit big-endian @tab X @tab X
640@item PCM signed 16-bit little-endian @tab X @tab X
641@item PCM signed 24-bit big-endian @tab X @tab X
642@item PCM signed 24-bit little-endian @tab X @tab X
643@item PCM signed 32-bit big-endian @tab X @tab X
644@item PCM signed 32-bit little-endian @tab X @tab X
5dd3707b 645@item PCM signed 16/20/24-bit big-endian in MPEG-TS @tab @tab X
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646@item PCM unsigned 8-bit @tab X @tab X
647@item PCM unsigned 16-bit big-endian @tab X @tab X
648@item PCM unsigned 16-bit little-endian @tab X @tab X
649@item PCM unsigned 24-bit big-endian @tab X @tab X
650@item PCM unsigned 24-bit little-endian @tab X @tab X
651@item PCM unsigned 32-bit big-endian @tab X @tab X
652@item PCM unsigned 32-bit little-endian @tab X @tab X
653@item PCM Zork @tab X @tab X
73b458e3 654@item QCELP / PureVoice @tab @tab X
a1c5b6ec 655@item QDesign Music Codec 2 @tab @tab X
d698c5d3 656 @tab There are still some distortions.
d31ba231 657@item RealAudio 1.0 (14.4K) @tab X @tab X
d698c5d3 658 @tab Real 14400 bit/s codec
a1c5b6ec 659@item RealAudio 2.0 (28.8K) @tab @tab X
d698c5d3 660 @tab Real 28800 bit/s codec
a1c5b6ec 661@item RealAudio 3.0 (dnet) @tab IX @tab X
a692130f 662 @tab Real low bitrate AC-3 codec
7bd3096f 663@item RealAudio SIPR / ACELP.NET @tab @tab X
bac4c85c 664@item Shorten @tab @tab X
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665@item Sierra VMD audio @tab @tab X
666 @tab Used in Sierra VMD files.
bac4c85c 667@item Smacker audio @tab @tab X
82ced5a9 668@item Speex @tab @tab E
360f980b 669 @tab supported through external library libspeex
16d81b27 670@item True Audio (TTA) @tab @tab X
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671@item TrueHD @tab @tab X
672 @tab Used in HD-DVD and Blu-Ray discs.
7bd47335 673@item TwinVQ (VQF flavor) @tab @tab X
dd2d651d 674@item Vorbis @tab E @tab X
19fcd66c 675 @tab A native but very primitive encoder exists.
bac4c85c 676@item WavPack @tab @tab X
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677@item Westwood Audio (SND1) @tab @tab X
678@item Windows Media Audio 1 @tab X @tab X
679@item Windows Media Audio 2 @tab X @tab X
c1061cc7 680@item Windows Media Audio Pro @tab @tab X
fa65584f 681@item Windows Media Audio Voice @tab @tab X
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682@end multitable
683
684@code{X} means that encoding (resp. decoding) is supported.
685
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686@code{E} means that support is provided through an external library.
687
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688@code{I} means that an integer-only version is available, too (ensures high
689performance on systems without hardware floating point support).
690
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691@section Subtitle Formats
692
000bbebb 693@multitable @columnfractions .4 .1 .1 .1 .1
9afc2917 694@item Name @tab Muxing @tab Demuxing @tab Encoding @tab Decoding
1f0920db 695@item SSA/ASS @tab X @tab X @tab X @tab X
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696@item DVB @tab X @tab X @tab X @tab X
697@item DVD @tab X @tab X @tab X @tab X
c58b82a2 698@item PGS @tab @tab @tab @tab X
2c77c906 699@item SubRip (SRT) @tab X @tab X @tab @tab X
a4276ba2 700@item XSUB @tab @tab @tab X @tab X
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701@end multitable
702
703@code{X} means that the feature is supported.
704
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705@section Network Protocols
706
000bbebb 707@multitable @columnfractions .4 .1
fbd52050 708@item Name @tab Support
f4f4e12c 709@item Apple HTTP Live Streaming @tab X
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710@item file @tab X
711@item Gopher @tab X
712@item HTTP @tab X
a2403986 713@item MMS @tab X
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714@item pipe @tab X
715@item RTP @tab X
716@item TCP @tab X
717@item UDP @tab X
718@end multitable
719
720@code{X} means that the protocol is supported.
721
722
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723@section Input/Output Devices
724
725@multitable @columnfractions .4 .1 .1
726@item Name @tab Input @tab Output
727@item ALSA @tab X @tab X
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728@item BKTR @tab X @tab
729@item DV1394 @tab X @tab
80ff8a16 730@item JACK @tab X @tab
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731@item LIBDC1394 @tab X @tab
732@item OSS @tab X @tab X
733@item Video4Linux @tab X @tab
734@item Video4Linux2 @tab X @tab
735@item VfW capture @tab X @tab
736@item X11 grabbing @tab X @tab
737@end multitable
738
23869b4a 739@code{X} means that input/output is supported.
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740
741
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742@chapter Platform Specific information
743
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744@section DOS
745
746Using a cross-compiler is preferred for various reasons.
747
748@subsection DJGPP
749
f8a45fa1 750Libav cannot be compiled because of broken system headers, add
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751@code{--extra-cflags=-U__STRICT_ANSI__} to the configure options as a
752workaround.
753
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754@section OS/2
755
f8a45fa1 756For information about compiling Libav on OS/2 see
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757@url{http://www.edm2.com/index.php/FFmpeg}.
758
759@section Unix-like
760
f8a45fa1 761Some parts of Libav cannot be built with version 2.15 of the GNU
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762assembler which is still provided by a few AMD64 distributions. To
763make sure your compiler really uses the required version of gas
764after a binutils upgrade, run:
765
766@example
767$(gcc -print-prog-name=as) --version
768@end example
769
770If not, then you should install a different compiler that has no
771hard-coded path to gas. In the worst case pass @code{--disable-asm}
772to configure.
773
bee694bc 774@subsection BSD
d0e1cd3d 775
f8a45fa1 776BSD make will not build Libav, you need to install and use GNU Make
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777(@file{gmake}).
778
bee694bc 779@subsubsection FreeBSD
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780
781FreeBSD will not compile out-of-the-box due to broken system headers.
782Passing @code{--extra-cflags=-D__BSD_VISIBLE} to configure will work
783around the problem. This may have unexpected sideeffects, so use it at
784your own risk. If you care about FreeBSD, please make an attempt at
785getting the system headers fixed.
786
bee694bc 787@subsection (Open)Solaris
3fd427cd 788
f8a45fa1 789GNU Make is required to build Libav, so you have to invoke (@file{gmake}),
e69decae 790standard Solaris Make will not work. When building with a non-c99 front-end
ee945547 791(gcc, generic suncc) add either @code{--extra-libs=/usr/lib/values-xpg6.o}
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792or @code{--extra-libs=/usr/lib/64/values-xpg6.o} to the configure options
793since the libc is not c99-compliant by default. The probes performed by
794configure may raise an exception leading to the death of configure itself
795due to a bug in the system shell. Simply invoke a different shell such as
796bash directly to work around this:
797
798@example
799bash ./configure
800@end example
3fd427cd 801
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802@subsection Darwin (MacOS X, iPhone)
803
804MacOS X on PowerPC or ARM (iPhone) requires a preprocessor from
805@url{http://github.com/yuvi/gas-preprocessor} to build the optimized
06a2ba23 806assembler functions. Just download the Perl script and put it somewhere
f8a45fa1 807in your PATH, Libav's configure will pick it up automatically.
377723b2 808
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809@section Windows
810
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811@subsection Native Windows compilation
812
f8a45fa1 813Libav can be built to run natively on Windows using the MinGW tools. Install
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814the latest versions of MSYS and MinGW from @url{http://www.mingw.org/}.
815You can find detailed installation
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816instructions in the download section and the FAQ.
817
f8a45fa1 818Libav does not build out-of-the-box with the packages the automated MinGW
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819installer provides. It also requires coreutils to be installed and many other
820packages updated to the latest version. The minimum version for some packages
821are listed below:
822
823@itemize
824@item bash 3.1
825@item msys-make 3.81-2 (note: not mingw32-make)
2014b51c 826@item w32api 3.13
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827@item mingw-runtime 3.15
828@end itemize
829
f8a45fa1 830Libav automatically passes @code{-fno-common} to the compiler to work around
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831a GCC bug (see @url{http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37216}).
832
c1989552 833Within the MSYS shell, configure and make with:
d0e1cd3d 834
c1989552 835@example
1a04d4c7 836./configure --enable-memalign-hack
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837make
838make install
839@end example
d0e1cd3d 840
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841This will install @file{ffmpeg.exe} along with many other development files
842to @file{/usr/local}. You may specify another install path using the
843@code{--prefix} option in @file{configure}.
d0e1cd3d 844
c1989552 845Notes:
d0e1cd3d 846
c1989552 847@itemize
d0e1cd3d 848
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849@item Building natively using MSYS can be sped up by disabling implicit rules
850in the Makefile by calling @code{make -r} instead of plain @code{make}. This
851speed up is close to non-existent for normal one-off builds and is only
852noticeable when running make for a second time (for example in
853@code{make install}).
854
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855@item In order to compile FFplay, you must have the MinGW development library
856of SDL. Get it from @url{http://www.libsdl.org}.
857Edit the @file{bin/sdl-config} script so that it points to the correct prefix
858where SDL was installed. Verify that @file{sdl-config} can be launched from
859the MSYS command line.
d0e1cd3d 860
f8a45fa1 861@item By using @code{./configure --enable-shared} when configuring Libav,
c1989552 862you can build libavutil, libavcodec and libavformat as DLLs.
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863
864@end itemize
865
c1989552 866@subsection Microsoft Visual C++ compatibility
d0e1cd3d 867
f8a45fa1 868As stated in the FAQ, Libav will not compile under MSVC++. However, if you
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869want to use the libav* libraries in your own applications, you can still
870compile those applications using MSVC++. But the libav* libraries you link
871to @emph{must} be built with MinGW. However, you will not be able to debug
872inside the libav* libraries, since MSVC++ does not recognize the debug
873symbols generated by GCC.
874We strongly recommend you to move over from MSVC++ to MinGW tools.
d0e1cd3d 875
f8a45fa1 876This description of how to use the Libav libraries with MSVC++ is based on
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877Microsoft Visual C++ 2005 Express Edition. If you have a different version,
878you might have to modify the procedures slightly.
d0e1cd3d 879
c1989552 880@subsubsection Using static libraries
d0e1cd3d 881
f8a45fa1 882Assuming you have just built and installed Libav in @file{/usr/local}.
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883
884@enumerate
885
886@item Create a new console application ("File / New / Project") and then
887select "Win32 Console Application". On the appropriate page of the
888Application Wizard, uncheck the "Precompiled headers" option.
889
890@item Write the source code for your application, or, for testing, just
891copy the code from an existing sample application into the source file
c1989552 892that MSVC++ has already created for you. For example, you can copy
f8a45fa1 893@file{libavformat/output-example.c} from the Libav distribution.
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894
895@item Open the "Project / Properties" dialog box. In the "Configuration"
896combo box, select "All Configurations" so that the changes you make will
897affect both debug and release builds. In the tree view on the left hand
898side, select "C/C++ / General", then edit the "Additional Include
f8a45fa1 899Directories" setting to contain the path where the Libav includes were
c1989552 900installed (i.e. @file{c:\msys\1.0\local\include}).
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901Do not add MinGW's include directory here, or the include files will
902conflict with MSVC's.
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903
904@item Still in the "Project / Properties" dialog box, select
905"Linker / General" from the tree view and edit the
906"Additional Library Directories" setting to contain the @file{lib}
f8a45fa1 907directory where Libav was installed (i.e. @file{c:\msys\1.0\local\lib}),
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908the directory where MinGW libs are installed (i.e. @file{c:\mingw\lib}),
909and the directory where MinGW's GCC libs are installed
910(i.e. @file{C:\mingw\lib\gcc\mingw32\4.2.1-sjlj}). Then select
911"Linker / Input" from the tree view, and add the files @file{libavformat.a},
912@file{libavcodec.a}, @file{libavutil.a}, @file{libmingwex.a},
913@file{libgcc.a}, and any other libraries you used (i.e. @file{libz.a})
914to the end of "Additional Dependencies".
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915
916@item Now, select "C/C++ / Code Generation" from the tree view. Select
917"Debug" in the "Configuration" combo box. Make sure that "Runtime
918Library" is set to "Multi-threaded Debug DLL". Then, select "Release" in
919the "Configuration" combo box and make sure that "Runtime Library" is
920set to "Multi-threaded DLL".
921
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922@item Click "OK" to close the "Project / Properties" dialog box.
923
f8a45fa1 924@item MSVC++ lacks some C99 header files that are fundamental for Libav.
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925Get msinttypes from @url{http://code.google.com/p/msinttypes/downloads/list}
926and install it in MSVC++'s include directory
927(i.e. @file{C:\Program Files\Microsoft Visual Studio 8\VC\include}).
928
929@item MSVC++ also does not understand the @code{inline} keyword used by
f8a45fa1 930Libav, so you must add this line before @code{#include}ing libav*:
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931@example
932#define inline _inline
933@end example
934
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935@item Build your application, everything should work.
936
937@end enumerate
938
939@subsubsection Using shared libraries
940
941This is how to create DLL and LIB files that are compatible with MSVC++:
942
943@enumerate
944
945@item Add a call to @file{vcvars32.bat} (which sets up the environment
946variables for the Visual C++ tools) as the first line of @file{msys.bat}.
947The standard location for @file{vcvars32.bat} is
948@file{C:\Program Files\Microsoft Visual Studio 8\VC\bin\vcvars32.bat},
949and the standard location for @file{msys.bat} is @file{C:\msys\1.0\msys.bat}.
950If this corresponds to your setup, add the following line as the first line
951of @file{msys.bat}:
952
953@example
954call "C:\Program Files\Microsoft Visual Studio 8\VC\bin\vcvars32.bat"
955@end example
956
957Alternatively, you may start the @file{Visual Studio 2005 Command Prompt},
958and run @file{c:\msys\1.0\msys.bat} from there.
959
960@item Within the MSYS shell, run @code{lib.exe}. If you get a help message
961from @file{Microsoft (R) Library Manager}, this means your environment
962variables are set up correctly, the @file{Microsoft (R) Library Manager}
f8a45fa1 963is on the path and will be used by Libav to create
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964MSVC++-compatible import libraries.
965
f8a45fa1 966@item Build Libav with
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967
968@example
969./configure --enable-shared --enable-memalign-hack
970make
971make install
972@end example
973
974Your install path (@file{/usr/local/} by default) should now have the
975necessary DLL and LIB files under the @file{bin} directory.
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976
977@end enumerate
978
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979To use those files with MSVC++, do the same as you would do with
980the static libraries, as described above. But in Step 4,
981you should only need to add the directory where the LIB files are installed
982(i.e. @file{c:\msys\usr\local\bin}). This is not a typo, the LIB files are
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983installed in the @file{bin} directory. And instead of adding the static
984libraries (@file{libxxx.a} files) you should add the MSVC import libraries
737eb597 985(@file{avcodec.lib}, @file{avformat.lib}, and
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986@file{avutil.lib}). Note that you should not use the GCC import
987libraries (@file{libxxx.dll.a} files), as these will give you undefined
988reference errors. There should be no need for @file{libmingwex.a},
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989@file{libgcc.a}, and @file{wsock32.lib}, nor any other external library
990statically linked into the DLLs. The @file{bin} directory contains a bunch
991of DLL files, but the ones that are actually used to run your application
992are the ones with a major version number in their filenames
993(i.e. @file{avcodec-51.dll}).
994
f8a45fa1 995Libav headers do not declare global data for Windows DLLs through the usual
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996dllexport/dllimport interface. Such data will be exported properly while
997building, but to use them in your MSVC++ code you will have to edit the
998appropriate headers and mark the data as dllimport. For example, in
999libavutil/pixdesc.h you should have:
1000@example
1001extern __declspec(dllimport) const AVPixFmtDescriptor av_pix_fmt_descriptors[];
1002@end example
1003
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1004Note that using import libraries created by dlltool requires
1005the linker optimization option to be set to
1006"References: Keep Unreferenced Data (/OPT:NOREF)", otherwise
1007the resulting binaries will fail during runtime. This isn't
1008required when using import libraries generated by lib.exe.
1009
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1010@subsection Cross compilation for Windows with Linux
1011
1012You must use the MinGW cross compilation tools available at
1013@url{http://www.mingw.org/}.
1014
f8a45fa1 1015Then configure Libav with the following options:
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1016@example
1017./configure --target-os=mingw32 --cross-prefix=i386-mingw32msvc-
1018@end example
1019(you can change the cross-prefix according to the prefix chosen for the
1020MinGW tools).
1021
f8a45fa1 1022Then you can easily test Libav with Wine
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1023(@url{http://www.winehq.com/}).
1024
1025@subsection Compilation under Cygwin
1026
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1027Please use Cygwin 1.7.x as the obsolete 1.5.x Cygwin versions lack
1028llrint() in its C library.
d0e1cd3d 1029
2f821b03 1030Install your Cygwin with all the "Base" packages, plus the
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1031following "Devel" ones:
1032@example
faa6f1c3 1033binutils, gcc4-core, make, git, mingw-runtime, texi2html
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1034@end example
1035
1036And the following "Utils" one:
1037@example
1038diffutils
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1039@end example
1040
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1041Then run
1042
1043@example
2f821b03 1044./configure --enable-static --disable-shared
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1045@end example
1046
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1047to make a static build.
1048
1049The current @code{gcc4-core} package is buggy and needs this flag to build
1050shared libraries:
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1051
1052@example
2f821b03 1053./configure --enable-shared --disable-static --extra-cflags=-fno-reorder-functions
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1054@end example
1055
f8a45fa1 1056If you want to build Libav with additional libraries, download Cygwin
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1057"Devel" packages for Ogg and Vorbis from any Cygwin packages repository:
1058@example
1059libogg-devel, libvorbis-devel
1060@end example
1061
1062These library packages are only available from Cygwin Ports
be8497b0 1063(@url{http://sourceware.org/cygwinports/}) :
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1064
1065@example
6a74b127 1066yasm, libSDL-devel, libdirac-devel, libfaac-devel, libgsm-devel,
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1067libmp3lame-devel, libschroedinger1.0-devel, speex-devel, libtheora-devel,
1068libxvidcore-devel
1069@end example
1070
1071The recommendation for libnut and x264 is to build them from source by
1072yourself, as they evolve too quickly for Cygwin Ports to be up to date.
d0e1cd3d 1073
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1074Cygwin 1.7.x has IPv6 support. You can add IPv6 to Cygwin 1.5.x by means
1075of the @code{libgetaddrinfo-devel} package, available at Cygwin Ports.
1076
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1077@subsection Crosscompilation for Windows under Cygwin
1078
1079With Cygwin you can create Windows binaries that do not need the cygwin1.dll.
1080
1081Just install your Cygwin as explained before, plus these additional
1082"Devel" packages:
1083@example
1084gcc-mingw-core, mingw-runtime, mingw-zlib
1085@end example
1086
1087and add some special flags to your configure invocation.
1088
1089For a static build run
1090@example
1091./configure --target-os=mingw32 --enable-memalign-hack --enable-static --disable-shared --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
1092@end example
1093
1094and for a build with shared libraries
1095@example
1096./configure --target-os=mingw32 --enable-memalign-hack --enable-shared --disable-static --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin
1097@end example
1098
d0e1cd3d 1099@bye