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Rostislav Pehlivanov c43485f707 diracdec: rewrite HQ slice decoding 
Now coefficients are written to a buffer and are then dequantized by the
new SIMD dequantization functions. For the lower bands without enough
coefficients to fill a register (and hence they overwrite) the C version
of the dequantization function is used.

The buffer is per-thread and will be realloc'd if anything changes.
This prevents regressions and having to limit slice size.

Signed-off-by: Rostislav Pehlivanov <rpehlivanov@obe.tv>
2016-07-11 23:38:45 +01:00
compat
doc doc/muxers: Fix Thisimproves typo 2016-07-11 12:55:29 +02:00
libavcodec diracdec: rewrite HQ slice decoding 2016-07-11 23:38:45 +01:00
libavdevice
libavfilter Changed metadata print option to accept general urls 2016-07-10 00:36:49 +02:00
libavformat avformat/oggenc: make flac the default for oga muxer 2016-07-11 13:08:19 -03:00
libavresample
libavutil vp9: add 16x16 idct avx2 (8-bit). 2016-07-11 10:14:58 -04:00
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libswscale Revert "PPC64: Add versions of functions in libswscale/input.c optimized for POWER8 VSX SIMD." 2016-07-11 10:15:05 -04:00
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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.