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FFmpeg git repo
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Rostislav Pehlivanov b6cc8ec7ec aaccoder: add frequency scaling and quantization correction for PNS 
This commit once again improves the PNS implementation by scaling the
thresholds with frequency. The thresholds get looser as the frequency
increases since higher frequencies are basically noise to human ears.

Also, this introduces quantization error correction for PNS. Should
the error be too much, no PNS will be used. The energy_ratio is used
to regulate the actual encoded PNS energy: if the generated PNS
energy is higher than the energy from the psy system, energy_ratio
is used to correct it so that hopefully once requantized and
transmitted the value in the decoder will be closer to what the
encoder has.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
2015-09-07 12:44:09 +01:00
compat use a wrapper script to call MS link.exe to avoid mixing with /usr/bin/link.exe 2015-07-24 20:02:32 +02:00
doc Update md5 muxer docs to indicate that it ignores timestamps. 2015-09-06 15:07:19 -04:00
libavcodec aaccoder: add frequency scaling and quantization correction for PNS 2015-09-07 12:44:09 +01:00
libavdevice Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249' 2015-09-05 21:35:46 +02:00
libavfilter avfilter/vf_stereo3d: stop dumping half of data for interleave rows output 2015-09-06 11:49:03 +00:00
libavformat avformat/async: fix integer conversion warning 2015-09-07 13:15:44 +02:00
libavresample Merge commit '9a003fc38833b6b9f08e44d7f1c6539db65840a0' 2015-09-07 12:26:13 +02:00
libavutil Merge commit 'a686e58165ca0f83966431a9166cb6e17bf6095c' 2015-09-07 12:28:25 +02:00
libpostproc Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249' 2015-09-05 21:35:46 +02:00
libswresample Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249' 2015-09-05 21:35:46 +02:00
libswscale Merge commit 'e88103a7f92cf27a2868b50acc8a9912f6088249' 2015-09-05 21:35:46 +02:00
presets
tests aaccoder: add frequency scaling and quantization correction for PNS 2015-09-07 12:44:09 +01:00
tools Merge commit '87e5d8d78cf08b54b4a9e7cbaeff89f8c1d91b78' 2015-09-07 12:27:21 +02:00
.gitattributes
.gitignore doc/examples: rename avio_list_dir -> avio_dir_cmd 2015-08-16 02:16:47 +02:00
.travis.yml Merge commit '6bcd3e05998b41fb3b2c8dcc79e4662854e5208d' 2015-09-07 12:24:51 +02:00
arch.mak use mmi instead of loongson3 as simd-optimization flag 2015-07-07 03:46:57 +02:00
Changelog Changelog: add 2.8 2015-09-06 15:59:40 +02:00
cmdutils_common_opts.h
cmdutils_opencl.c OpenCL: Avoid potential buffer overflow in cmdutils_opencl.c 2015-04-28 12:18:23 +02:00
cmdutils.c ffmpeg: replace deprecated av_log_ask_for_sample with av_log 2015-08-12 00:14:13 +02:00
cmdutils.h cmdutils: remove sws_opts usage, simplify code 2015-08-08 16:51:25 +02:00
common.mak Merge commit '3ae0e721c7b6e0483801b9039b3d140e3b68b7f5' 2015-07-22 16:30:37 +02:00
configure Merge commit '0c7707610f46a28b65eff935500c78c9781f8f4f' 2015-09-07 12:53:00 +02:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS
ffmpeg_dxva2.c ffmpeg_dxva2: call GetDesktopWindow() in place of GetShellWindow() 2015-06-03 16:25:08 +02:00
ffmpeg_filter.c lavfi: fix compilation with FF_API_OLD_FILTER_OPTS=0. 2015-08-18 22:22:49 -04:00
ffmpeg_opt.c ffmpeg: Improve help text for -target. 2015-09-02 14:32:06 +02:00
ffmpeg_vdpau.c ffmpeg_vdpau: Ignore decoder's max supported level 2015-08-16 15:02:33 -07:00
ffmpeg_videotoolbox.c avcodec: add new Videotoolbox hwaccel. 2015-08-03 10:12:10 +02:00
ffmpeg.c Remove left-over FF_API_DESTRUCT_PACKET cruft 2015-09-05 16:51:53 +02:00
ffmpeg.h ffmpeg: switch swscale option handling to AVDictionary similar to what the other subsystems use 2015-08-08 14:44:15 +02:00
ffplay.c Remove left-over FF_API_AVFILTERBUFFER cruft 2015-09-05 16:27:19 +02:00
ffprobe.c ffprobe: check av_asprintf() for failure 2015-06-13 01:45:27 +02:00
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: Use singlejpeg muxer for jpeg 2015-06-08 03:36:22 +02:00
ffserver.c ffserver: cast PID to int64_t before printing 2015-08-21 15:47:54 +02:00
INSTALL.md
library.mak build: add LDLIBFLAGS 2015-07-08 14:35:02 +02:00
LICENSE.md avfilter/vf_removegrain: add x86 and x86_64 SSE2 functions 2015-07-14 23:50:50 +00:00
MAINTAINERS MAINTAINERS: add myself as an AAC encoder maintainer 2015-08-21 19:44:15 +01:00
Makefile avcodec: add new Videotoolbox hwaccel. 2015-08-03 10:12:10 +02:00
README.md README: add ffserver 2015-02-12 11:59:22 +01:00
RELEASE RELEASE: update to 2.7.git 2015-07-19 17:52:31 -03:00
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.