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Rostislav Pehlivanov 688060fbb7 vc2enc: properly promote operations to 64 bits 
On Windows machines, the UL suffix still means 32 bits.
The only parts that need 64 bits are (1ULL << (m + 32)) and
(t*qf + qf). Hence, use the proper ULL suffix for the former
and just increase the type of the qf constant for the latter.
No overflows can happen as long as these are done in 64 bits and
the quantization table doesn't change.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
 		2018-03-13 01:43:30 +00:00
compat compat: remove in-tree NVidia headers 2018-02-27 16:22:12 +01:00
doc avfilter: add drmeter audio filter 2018-03-11 13:43:33 +01:00
ffbuild
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fftools ffprobe: fix infinite loop in subtitle decoding 2018-03-12 21:11:06 +01:00
libavcodec vc2enc: properly promote operations to 64 bits 2018-03-13 01:43:30 +00:00
libavdevice avdevice: add android_camera indev 2018-02-22 00:29:27 +01:00
libavfilter avfilter: add drmeter audio filter 2018-03-11 13:43:33 +01:00
libavformat avformat/pcm: decrease delay when reading PCM streams. 2018-03-13 01:34:42 +01:00
libavresample avresample: remove deprecated attribute from the AVAudioResampleContext struct 2018-01-09 10:56:53 -03:00
libavutil avutil: add missing version bump for AV_CRC_8_EBU 2018-03-10 01:15:05 -03:00
libpostproc
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libswresample swresample/rematrix: fix update of channel matrix if input or output layout is undefined 2018-02-19 08:32:25 +01:00
libswscale swscale: Introduce a helper to identify semi-planar formats 2018-03-03 15:20:19 -08:00
presets
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tests avformat/pcm: decrease delay when reading PCM streams. 2018-03-13 01:34:42 +01:00
tools fftools, tools, examples: migrate to AVFormatContext->url 2018-01-28 23:06:43 +01:00
.gitattributes
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.gitignore Remove the ffserver program 2018-01-06 18:31:37 +00:00
.travis.yml
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CONTRIBUTING.md
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COPYING.GPLv2
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COPYING.GPLv3
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COPYING.LGPLv2.1
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CREDITS
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Changelog avfilter: add drmeter audio filter 2018-03-11 13:43:33 +01:00
INSTALL.md
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LICENSE.md
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MAINTAINERS MAINTAINERS: add myself to mediacodec 2018-03-06 13:54:35 -08:00
Makefile lavd: add new API for iterating input and output devices 2018-02-06 18:57:42 +00:00
README.md Remove the ffserver program 2018-01-06 18:31:37 +00:00
RELEASE
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configure configure: rename cuda to ffnvcodec 2018-03-05 21:09:22 +01:00

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.
  • 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 and will be ignored.