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James Almer 40b896a781 avformat/movenc: fix writing dOps atoms 
Don't blindly copy all bytes in extradata past ChannelMappingFamily. Instead
check if ChannelMappingFamily is not 0 and then only write the correct amount
of bytes from ChannelMappingTable, as defined in the spec[1].

Fixes part of ticket #9190.

[1] https://opus-codec.org/docs/opus_in_isobmff.html#4.3.2

Signed-off-by: James Almer <jamrial@gmail.com>
2021-05-02 20:54:59 -03:00
compat compat/cuda: correct ushort4 to use ushort 2021-02-22 17:03:52 +01:00
doc Update versions for 4.4 2021-03-20 01:01:12 +01:00
ffbuild ffbuild/common: Make deletion of templates possible 2021-02-07 09:45:04 +01:00
fftools fftools/ffmpeg: use av_packet_alloc() to allocate packets 2021-03-17 15:19:38 -03:00
libavcodec avcodec/av1_metadata: don't store the inserted TD OBU in stack 2021-05-02 20:52:34 -03:00
libavdevice Bump Versions before release/4.4 branch 2021-03-20 01:01:12 +01:00
libavfilter avfilter/overlay_cuda: check av_buffer_ref result 2021-04-11 10:22:57 +02:00
libavformat avformat/movenc: fix writing dOps atoms 2021-05-02 20:54:59 -03:00
libavresample
libavutil avutil/cpu: Use HW_NCPUONLINE to detect # of online CPUs with OpenBSD 2021-04-24 09:24:03 +02:00
libpostproc Bump Versions before release/4.4 branch 2021-03-20 01:01:12 +01:00
libswresample libswresample/audioconvert: Fix undefined NULL + 0 2021-04-02 21:39:54 +02:00
libswscale libswscale/x86/yuv2yuvX: Removes unrolling for mmx and mmxext 2021-04-03 19:43:39 +02:00
presets
tests avformat/url: add ff_make_absolulte_url2 to be able to test windows path cases 2021-04-08 17:38:06 +02:00
tools tools/target_dem_fuzzer: Fix packet leak 2021-04-01 11:38:45 +02:00
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.mailmap mailmap: add entry for myself 2021-03-09 02:09:55 +00:00
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Changelog Changelog: replace <next> by 4.4 2021-04-09 06:26:39 +02:00
configure configure: select child muxers for rtp_mpegts 2021-03-26 14:42:34 +05:30
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Makefile avcodec: move core AVCodecContext functions from util.c to a new file 2021-03-19 15:35:35 -03:00
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RELEASE Update versions for 4.4 2021-03-20 01:01:12 +01:00
RELEASE_NOTES RELEASE_NOTES: Based on the version from 4.3 2021-04-08 22:55:16 +02:00

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.