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FFmpeg git repo
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Rostislav Pehlivanov 27d23ae074 aacenc: add support for encoding files using Long Term Prediction 
Long Term Prediction allows for prediction of spectral coefficients
via the previously decoded time-dependent samples. This feature
works well with harmonic content 2 or more frames long, like speech,
human or non-human, piano music or any constant tones at very low
bitrates.

It should be noted that the current coder is highly efficient and
the rate control system is unable to encode files at extremely
low bitrates (less than 14kbps seems to be impossible) so this
extension isn't capable of optimum operation. Dramatic difference
is observable with some types of audio and speech but for the most
part the audiable differences are subtle. The spectrum looks better
however so the encoder is able to harvest the additional bits that
this feature provies, should the user choose to enable it. So
it's best to enable this feature only if encoding at the absolutely
lowest bitrate that the encoder is capable of.
2015-10-17 02:31:20 +01:00
compat w32pthreads: fix mingw build on x86 with -msse2 or higher 2015-10-16 14:54:48 +02:00
doc doc/ffmpeg: use stream_loop instead of loop 2015-10-14 21:56:31 -04:00
libavcodec aacenc: add support for encoding files using Long Term Prediction 2015-10-17 02:31:20 +01:00
libavdevice avdevice/internal: add av_warn_unused_result 2015-10-16 17:28:40 -04:00
libavfilter avfilter/avfilter: Error out if audio parameters change instead of failing an assert 2015-10-16 15:25:09 +02:00
libavformat avformat/rsd: propagate return values of extradata helper functions 2015-10-16 16:11:58 -03:00
libavresample
libavutil avutil/mem: add av_warn_unused_result 2015-10-16 19:53:55 -04:00
libpostproc
libswresample swresample/swresample_internal: add av_warn_unused_result 2015-10-15 22:27:23 -04:00
libswscale swscale/swscale: add av_warn_unused_result to sws_init_context 2015-10-16 17:18:21 -04:00
presets
tests Merge commit '1f84b008bf2b1eaca473937c48788cb4e4ce1aea' 2015-10-16 23:00:11 +02:00
tools
.gitattributes
.gitignore
.travis.yml
arch.mak
Changelog avformat: add svag demuxer 2015-10-16 16:37:41 +02:00
cmdutils_common_opts.h
cmdutils_opencl.c
cmdutils.c Merge commit '9ef748173a4e0e58d40afaf38397783cd2537eaa' 2015-10-16 22:57:21 +02:00
cmdutils.h
common.mak Merge commit 'c1aac39eaccd32dc3b74ccfcce701d3d888fbc6b' 2015-10-14 13:54:50 +02:00
configure mips: disable all features in configure if no cpu is matched 2015-10-15 20:19:10 +02:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg_dxva2.c
ffmpeg_filter.c
ffmpeg_opt.c ffmpeg_opt: rename loop option to stream_loop 2015-10-14 21:06:28 +02:00
ffmpeg_vdpau.c
ffmpeg_videotoolbox.c ffmpeg/videotoolbox: protect UTGetOSTypeFromString on both VDA and VT 2015-10-15 10:22:31 +02:00
ffmpeg.c ffmpeg: add deprecation guards around remaining AVFMT_RAWPICTURE usage 2015-10-14 14:52:43 +02:00
ffmpeg.h Merge commit '16b0c929621f84983b83b9735ce973acb12723bc' 2015-10-14 14:28:20 +02:00
ffplay.c
ffprobe.c
ffserver_config.c
ffserver_config.h
ffserver.c
INSTALL.md
library.mak
LICENSE.md
MAINTAINERS
Makefile
README.md
RELEASE
version.sh

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.