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Claudio Freire c883da6bf4 AAC encoder: fix signed integer overflow 
Clamp scalefactors by coef2minsf to avoid undefined behavior
caused by signed integer overflow. It also avoids clipping of
coefficients so it should avoid artifacts as well, on very
rare corner cases.
2016-03-30 10:05:03 -03:00
compat compat/os2threads: split long lines 2016-02-14 19:17:36 +01:00
doc doc/filters: remove false claim in sofalizer description 2016-03-30 02:35:51 +01:00
libavcodec AAC encoder: fix signed integer overflow 2016-03-30 10:05:03 -03:00
libavdevice lavd/dshow_crossbar: remove trailing whitespace 2016-03-28 13:31:38 -08:00
libavfilter avfilter/vf_waveform: optimize lowpass filter even more 2016-03-29 22:02:48 +02:00
libavformat avformat/svag: fix division by zero 2016-03-28 21:34:08 -03:00
libavresample Merge commit 'cc4c242081' 2016-01-02 10:13:58 +01:00
libavutil fix some a/an typos 2016-03-28 14:13:17 -08:00
libpostproc postproc: fix unaligned access 2016-02-23 15:50:28 +01:00
libswresample swresample/swresample: Remove "less than" comparissions of enums 2016-03-22 14:20:12 +01:00
libswscale fix some a/an typos 2016-03-28 14:13:17 -08:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests tests/audiomatch: Reduce search window 2016-03-30 03:37:56 +02:00
tools fix some a/an typos 2016-03-28 14:13:17 -08:00
.gitattributes Treat all '*.pnm' files as non-text file 2014-11-28 17:52:43 -05:00
.gitignore fate: add audiomatch 2016-03-22 09:42:05 +01:00
.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 avcodec: add dca core extraction bsf 2016-03-28 10:50:41 +02:00
cmdutils.c cmdutils: realign for some additional filters with very long name 2016-02-06 12:48:51 +01:00
cmdutils.h fate/source: Do not use GNU extensions in sed 2016-02-13 07:59:00 -08:00
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 build: use a link instead of changing current directory when compiling 2016-01-25 20:43:34 +01:00
configure configure: Fail if CUDA enabled but not found 2016-03-28 01:14:36 +02:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3
CREDITS CREDITS: redirect to Git log, remove current outdated content 2013-01-31 18:02:52 +01:00
ffmpeg.c vp9: add superframe merging bitstream filter. 2016-03-11 11:19:14 -05:00
ffmpeg.h Merge commit 'bd49be885e' 2016-02-17 16:47:05 +00:00
ffmpeg_dxva2.c ffmpeg_dxva2: add a profile check for hevc 2016-02-15 12:34:19 +01:00
ffmpeg_filter.c fix some a/an typos 2016-03-28 14:13:17 -08:00
ffmpeg_opt.c ffmpeg: remove hardcoded 'now' creation_time support 2016-03-03 01:37:22 +01:00
ffmpeg_qsv.c Merge commit 'fb472e1a11' 2015-10-22 16:18:02 +02:00
ffmpeg_vdpau.c ffmpeg_vdpau: Free ctx on error path 2016-03-03 16:41:11 +01:00
ffmpeg_videotoolbox.c ffmpeg/videotoolbox: protect UTGetOSTypeFromString on both VDA and VT 2015-10-15 10:22:31 +02:00
ffplay.c ffplay: remove redundant silence buffer 2016-03-22 00:04:21 +01:00
ffprobe.c ffprobe: Deprecate stream timecode field and add frame side data timecode field 2016-02-01 18:19:30 +00:00
ffserver.c ffserver: Fixed ffserver to support large ffm files 2016-03-08 11:39:29 +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 build: use a link instead of changing current directory when compiling 2016-01-25 20:43:34 +01:00
LICENSE.md LICENSE: Thorough editing 2016-02-28 08:19:44 -08:00
MAINTAINERS lavfi: Add coreimage filter for GPU based image filtering on OSX. 2016-03-25 17:18:49 +01:00
Makefile fate: add audiomatch 2016-03-22 09:42:05 +01:00
README.md README: replace http with https 2015-10-06 13:27:29 +02:00
RELEASE RELEASE: Update to 3.0.git 2016-02-15 10:20:33 -08:00
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. Few developers follow pull requests so they will likely be ignored.