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Andreas Rheinhardt 6221491f90 avformat/matroskaenc: Factor writing Info out 
Avoids the surprise of using pb for the main AVIOContext
at the beginning and end of mkv_write_header() and for
for the dynamic buffer opened for the Info element
in the middle of mkv_write_header().

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-01-19 11:53:30 +01:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc lavc/qsvenc_hevc: add -pic_timing_sei option 2022-01-18 16:25:33 +08:00
ffbuild Makefile: Redo duplicating object files in shared builds 2022-01-04 05:01:04 +01:00
fftools fftools/cmdutils: Fix undefined 1 << 31 2022-01-11 00:20:35 +01:00
libavcodec lavc/qsvenc_hevc: add -pic_timing_sei option 2022-01-18 16:25:33 +08:00
libavdevice avdevice/iec61883: #if unused code away, fix -O0 compilation 2022-01-08 18:15:18 +01:00
libavfilter avfilter/tonemap_vaapi: set va parameters filters and numbers 2022-01-17 16:32:17 +08:00
libavformat avformat/matroskaenc: Factor writing Info out 2022-01-19 11:53:30 +01:00
libavutil avutil/parseutils: use quadhd for Quad HD 2022-01-12 13:42:26 +08:00
libpostproc lib*/version.h: Bump Versions after release/5.0 branch 2022-01-04 14:29:06 +01:00
libswresample lib*/version.h: Bump Versions after release/5.0 branch 2022-01-04 14:29:06 +01:00
libswscale swscale/x86/input.asm: add x86-optimized planer rgb2yuv functions 2022-01-11 16:34:33 -03:00
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tests avformat/matroskaenc: Don't waste bytes on ChapterAtoms length fields 2022-01-19 11:52:15 +01:00
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configure avfilter: add overlay vaapi filter 2022-01-17 16:32:17 +08:00
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INSTALL.md INSTALL.md: Fix Markdown formatting 2019-01-31 10:29:16 -09:00
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Makefile Makefile: Redo duplicating object files in shared builds 2022-01-04 05:01:04 +01:00
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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 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.