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Marvin Scholz c6f4e10111 avformat: do not use AVIO_FLAG_* with avio_alloc_context 
The documentation states that here 0 should be used for read-only and
1 for a writable buffer. AVIO_FLAG_WRITE however is 2, while it works
due to the way the flag is handled internally, it is still wrong
according to the documentation.

Additionally it makes it seem as if the AVIO_FLAG_* values could be used
here, which is actually not true, as when AVIO_FLAG_READ would be used
here it would create a writable buffer as AVIO_FLAG_READ is defined as 1.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 		2021-12-04 14:06:30 +01:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc lavu/avframe: add a time_base field 2021-12-03 22:41:00 +01:00
ffbuild avfilter: compress CUDA PTX code if possible 2021-06-22 14:05:44 +02:00
fftools fftools/ffmpeg_filter: Avoid DynBuf API to improve error checks 2021-12-03 16:12:52 +01:00
libavcodec avcodec/videotoolbox: fix use of unknown builtin '__builtin_available' 2021-12-04 08:32:31 +08:00
libavdevice avdevice/lavfi: Don't require AV_PIX_FMT_NONE == -1 2021-12-03 17:01:24 +01:00
libavfilter avfilter/buffersink: Remove outdated comments 2021-12-03 17:01:45 +01:00
libavformat avformat: do not use AVIO_FLAG_* with avio_alloc_context 2021-12-04 14:06:30 +01:00
libavutil lavu/avframe: add a time_base field 2021-12-03 22:41:00 +01:00
libpostproc libpostproc/postprocess_template: Don't reimplement FFSWAP 2021-10-02 17:13:42 +02:00
libswresample all: Remove unused-but-set variables 2021-12-03 16:09:14 +01:00
libswscale swscale/yuv2rgb: Silence a set-but-unused-variable warning 2021-12-03 16:10:51 +01:00
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tests fate/ffmpeg: Fix requirements of shortest tests 2021-12-02 17:44:27 +01:00
tools tools/target_dec_fuzzer: Adjust DXA threshold 2021-12-01 17:44:56 +01:00
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.gitignore avfilter: compress CUDA PTX code if possible 2021-06-22 14:05:44 +02:00
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Changelog Changelog: update with recent Vulkan filter additions 2021-12-02 11:08:58 +01:00
INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS avformat: add Argonaut Games CVG demuxer 2021-05-12 20:25:50 +10:00
Makefile FATE: add a test for sliced scaling 2021-08-08 19:26:05 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE Bump Versions before release/4.4 branch 2021-03-20 01:01:12 +01:00
configure avfilter: add a flip_vulkan filter 2021-12-02 11:06:24 +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 means to alter decoded audio and video through a directed graph of connected 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.