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FFmpeg git repo
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Rostislav Pehlivanov 20dc527139 aacenc: reorder coding tools 
This commit reorders the coding tools such that they're doing what
the decoder does in reverse order. The very first thing the decoder
does is to decode M/S stereo if that's signalled, then prediction,
IS, and finally TNS and PNS in another function.
adjust_frame_information()'s application of IS and M/S was taken
out into two separate functions since prediction doesn't expect
to get the raw coefficients but rathe the coefficients at that
part of the encoding process.

The results show a much better PSNR when any combination of
Intensity Stereo, Mid/Side stereo and Prediction is used, which
is a sign of an increased encoder efficiency as well as the fact
that the decoder gets what it expects.

Otherwise, with only IS, PNS or prediction there are neither
regressions nor improvements except in the case of IS, which
now by itself (or with PNS) is less prone to artifacts. Enabling
M/S (using stereo_mode) as well will also reduce stereo artifacts
induced by IS, so in the very near future M/S may be enabled
by default.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
2015-09-02 06:26:45 +01:00
compat
doc avfilter/vf_subtitles: allow setting fonts directory 2015-09-02 00:47:52 +02:00
libavcodec aacenc: reorder coding tools 2015-09-02 06:26:45 +01:00
libavdevice avdevice/libdc1394: Make dc1394_frame_format and dc1394_frame_rate, static 2015-08-30 13:10:11 +02:00
libavfilter avfilter/vf_subtitles: allow setting fonts directory 2015-09-02 00:47:52 +02:00
libavformat avformat/hlsenc: add a use_localtime option to expand the segment filename with localtime 2015-09-02 04:31:32 +02:00
libavresample
libavutil
libpostproc
libswresample swresample/swresample-test: Make layouts static const 2015-08-30 13:10:11 +02:00
libswscale swscale/utils: If cascaded contexts are used forward sws_setColorspaceDetails() to the first context 2015-08-31 02:00:55 +02:00
presets
tests fate: adjust fuzz of AAC Encoder's TNS test 2015-09-01 09:08:31 +01:00
tools
.gitattributes
.gitignore
arch.mak
Changelog avfilter: add allrgb 2015-08-29 14:57:52 +02:00
cmdutils_common_opts.h
cmdutils_opencl.c
cmdutils.c
cmdutils.h
common.mak
configure
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg_dxva2.c
ffmpeg_filter.c
ffmpeg_opt.c Put remaining pieces of CODEC_FLAG_EMU_EDGE under FF_API_EMU_EDGE. 2015-08-28 14:40:59 -04:00
ffmpeg_vdpau.c
ffmpeg_videotoolbox.c
ffmpeg.c ffmpeg: force 128k default audio bitrate if nothing is specified and there is no specific default 2015-08-28 23:07:12 +02:00
ffmpeg.h
ffplay.c Put remaining pieces of CODEC_FLAG_EMU_EDGE under FF_API_EMU_EDGE. 2015-08-28 14:40:59 -04:00
ffprobe.c
ffserver_config.c ffserver: use -b instead of -ab for setting audio bitrate. 2015-08-28 14:59:58 -04:00
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.