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Anton Khirnov e218bde9f9 fftools/ffmpeg: replace MATCH_PER_STREAM_OPT(.., str, ..) with a function 
This has multiple advantages:
* The macro has multiple parameters that often have similar or identical
  values, yet very different meanings (one is the name of the
  OptionsContext member where the parsed options are stored, the other
  the name of the variable into which the result is written); this
  change makes each of these explicit.

* The macro returns on failure, which may cause leaks - this was the
  reason for adding MATCH_PER_STREAM_OPT_CLEAN(), also ost_add()
  currently leaks encoder_opts. The new function returns failure to its
  caller, which decides how to deal with it. While that adds a lot of
  error checks/forwards for now, those will be reduced in following
  commits.

* new code is type- and const- correct

Invocations of MATCH_PER_STREAM_OPT() with other types will be converted
in following commits.
2024-08-13 10:28:54 +02:00
compat avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
doc libavutil: deprecate the old Vulkan queue API, add doc/APIchanges entries 2024-08-11 05:13:15 +02:00
ffbuild riscv: add Zvbb vector bit manipulation extension 2024-05-11 11:38:49 +03:00
fftools fftools/ffmpeg: replace MATCH_PER_STREAM_OPT(.., str, ..) with a function 2024-08-13 10:28:54 +02:00
libavcodec avcodec/avcodec_internal: fix type definition for the new functions 2024-08-12 23:10:48 -03:00
libavdevice avdevice/dshow: Initialize 2 pointers 2024-08-11 13:21:16 +02:00
libavfilter avfilter/video: don't zero allocated buffers if memory poisoning is used 2024-08-12 11:41:38 -03:00
libavformat avformat/movenc: don't look at previous track_id as it may not be set 2024-08-12 11:41:38 -03:00
libavutil hwcontext_vulkan: ignore false positive validation errors 2024-08-11 05:13:18 +02:00
libpostproc avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswresample swresample/swresample: Rectify invalid function in the documentation 2024-07-02 21:57:17 +02:00
libswscale sws/riscv: depend on RVB and simplify accordingly 2024-08-05 21:16:26 +03:00
presets
tests tests/iamf: match stream group by id in some tests 2024-08-12 11:41:38 -03:00
tools tools/target_dec_fuzzer: Use av_buffer_allocz() to avoid missing slices to have unpredictable content 2024-08-10 15:04:46 +02:00
.gitattributes lavf/assenc: normalize line endings to \n 2024-02-11 17:01:07 -08:00
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog lavc/qsvdec: Add VVC decoder 2024-07-30 13:40:21 +08:00
configure configure: check if assembler supports RV zicbop 2024-07-30 18:41:51 +03:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md
LICENSE.md
MAINTAINERS MAINTAINERS: add myself as d3d12va_encode maintainer 2024-07-10 18:10:08 +02:00
Makefile add tools/target_swr_fuzzer 2024-08-08 15:26:52 +02:00
README.md
RELEASE RELEASE: update after 7.0 branch 2024-04-02 13:02:39 -03:00

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.