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Claudio Freire 60a76f8be8 AAC encoder: enforce SF delta in PNS and IS SFs Make sure to properly enforce maximum scalefactor delta in PNS and I/S, not as an absolute range but relative to the previous and first scalefactor, the latter important since PNS uses an implicit inicial scalefactor derived from the global gain, and encoded in a different way, which makes a big difference in the allowed range.		2016-01-17 12:52:54 -03:00
compat	…
doc	avfilter: add ahistogram multimedia filter	2016-01-15 19:10:46 +01:00
libavcodec	AAC encoder: enforce SF delta in PNS and IS SFs	2016-01-17 12:52:54 -03:00
libavdevice	remove all uses of the deprecated avpicture_get_size() function	2016-01-17 12:01:35 +01:00
libavfilter	avfilter/af_sidechaincompress & af_agate: use audio fifo from lavu	2016-01-15 21:49:42 +01:00
libavformat	remove all uses of the deprecated avpicture_get_size() function	2016-01-17 12:01:35 +01:00
libavresample	…
libavutil	x86/fixed_dsp: add ff_butterflies_fixed_sse2	2016-01-16 21:09:38 -03:00
libpostproc	…
libswresample	…
libswscale	swscale/x86/rgb2rgb_template: Fix planar2x() for short width	2016-01-17 12:34:34 +01:00
presets	…
tests	fate: add 10-bit v210 encoder tests	2016-01-17 16:03:43 +01:00
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Changelog	avfilter: add ahistogram multimedia filter	2016-01-15 19:10:46 +01:00
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LICENSE.md	…
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configure	avfilter: add spectrumsynth filter	2016-01-14 20:51:20 +01:00
ffmpeg.c	ffmpeg: fix sws_dict leak on error exit	2016-01-17 01:19:43 +01:00
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ffmpeg_dxva2.c	…
ffmpeg_filter.c	…
ffmpeg_opt.c	…
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ffmpeg_videotoolbox.c	…
ffplay.c	…
ffprobe.c	…
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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.