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Andreas Cadhalpun 884cd3caa5 swscale: save ebx register when it is not available 
Configure checks if the ebx register can be used for asm and it has to
be saved if and only if this is not the case.
Without this the build fails when configuring with --toolchain=hardened
--disable-pic on i386 using gcc 4.8:
error: PIC register clobbered by '%ebx' in 'asm'

In that case gcc 4.8 reserves the ebx register for the GOT needed for
PIE, so it can't be used in asm directly.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit 319438e2f2)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
2017-01-26 02:22:09 +01:00
compat compat/cuda: convert to unix line endings 2016-09-23 11:43:00 +02:00
doc avformat: Add max_streams option 2016-12-11 00:21:53 +01:00
libavcodec avcodec/utils: correct align value for interplay 2017-01-26 00:34:13 +01:00
libavdevice Revert "Bump minor versions after 3.2 branchpoint to seperate release" 2016-10-26 21:22:12 +02:00
libavfilter avfilter/vf_hwupload_cuda: Add min/max limits for the 'device' option 2016-12-08 11:26:34 +01:00
libavformat avformat/flacdec: Check avio_read result when reading flac block header. 2017-01-26 00:34:13 +01:00
libavresample Revert "Bump minor versions after 3.2 branchpoint to seperate release" 2016-10-26 21:22:12 +02:00
libavutil avutil/random_seed: Reduce the time needed on systems with very low precission clock() 2017-01-26 00:34:12 +01:00
libpostproc Revert "Bump minor versions after 3.2 branchpoint to seperate release" 2016-10-26 21:22:12 +02:00
libswresample Revert "Bump minor versions after 3.2 branchpoint to seperate release" 2016-10-26 21:22:12 +02:00
libswscale swscale: save ebx register when it is not available 2017-01-26 02:22:09 +01:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests avformat/apngenc: use the stream parameters extradata if available 2016-11-18 12:33:31 -03:00
tools zmqsend: Initialize ret to 0 2016-12-06 00:07:50 +01:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore Merge commit '6641819fee' 2016-06-26 15:43:05 +02:00
.travis.yml Merge commit 'eda1832874' 2015-11-22 17:12:24 +00:00
arch.mak mips: rename mipsdspr1 to mipsdsp 2015-12-04 02:35:42 +01:00
Changelog Update for 3.2.2 2016-12-06 00:09:40 +01:00
cmdutils.c cmdutils: fix typos 2016-10-09 20:09:00 +02:00
cmdutils.h cmdutils: fix typos 2016-10-09 20:09:00 +02:00
cmdutils_common_opts.h opts: add list device sources/sinks options 2014-10-25 20:20:31 +02:00
cmdutils_opencl.c all: use FFDIFFSIGN to resolve possible undefined behavior in comparators 2015-11-03 16:28:30 -05:00
common.mak Merge commit 'c5fd4b5061' 2016-06-27 19:39:46 +02:00
configure configure: check for strtoull on msvc 2016-12-05 19:20:59 -03:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg.c ffmpeg: Fix bsf corrupting merged side data 2016-11-17 12:47:40 +01:00
ffmpeg.h Merge commit '398f015f07' 2016-10-08 11:38:47 +02:00
ffmpeg_cuvid.c doc: fix spelling errors 2016-10-21 23:58:47 +02:00
ffmpeg_dxva2.c Merge commit '18c506e9e6' 2016-06-26 15:34:01 +02:00
ffmpeg_filter.c ffmpeg: switch to codecpar 2016-09-21 15:39:28 +02:00
ffmpeg_opt.c Avoid using the term "file" and prefer "url" in some docs and comments 2016-12-06 00:07:50 +01:00
ffmpeg_qsv.c ffmpeg/qsv: fix QSV-accelerated transcode performance drop issue. 2016-08-16 17:09:33 +02:00
ffmpeg_vaapi.c ffmpeg_vaapi: fix choice of decoder_format 2016-09-29 01:23:52 +02:00
ffmpeg_vdpau.c Merge commit 'f72db3f2f3' 2016-06-26 15:29:39 +02:00
ffmpeg_videotoolbox.c ffmpeg/videotoolbox: protect UTGetOSTypeFromString on both VDA and VT 2015-10-15 10:22:31 +02:00
ffplay.c ffplay: fix sws_scale possible out of bounds array access 2016-12-10 23:24:05 +01:00
ffprobe.c ffprobe: fix crash in case -of is specified with an empty string 2016-11-17 23:51:21 +01:00
ffserver.c ffserver: Check chunk size 2016-12-06 00:07:50 +01:00
ffserver_config.c ffserver: NoVideo and NoAudio flags weren't cleared between streams. 2016-02-21 22:29:15 +01:00
ffserver_config.h ffserver: Use singlejpeg muxer for jpeg 2015-06-08 03:36:22 +02:00
INSTALL.md INSTALL: add markdown syntax 2014-05-28 22:38:38 +02:00
library.mak Merge commit 'c5fd4b5061' 2016-06-27 19:39:46 +02:00
LICENSE.md lavc: remove libfaac wrapper 2016-10-01 19:58:04 +01:00
MAINTAINERS MAINTAINERS: add myself for audiotoolbox 2016-10-24 01:47:52 -05:00
Makefile Merge commit '6641819fee' 2016-06-26 15:43:05 +02:00
README.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
RELEASE Update for 3.2.2 2016-12-06 00:09:40 +01:00
RELEASE_NOTES RELEASE_NOTES: based on 3.1 2016-10-26 21:14:02 +02:00
version.sh version.sh: Fix spurious rebuilds. 2016-03-10 09:53:10 +01:00

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • ffserver is a multimedia streaming server for live broadcasts.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.