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Andreas Rheinhardt 7c95dbd94e avformat/matroskadec: Redo handling extradata allocation 
Up until now, matroska_parse_tracks() has two main ways
to set AVCodecParameters.extradata: A generic way via CodecPrivate
(possibly with an offset) and by allocating a buffer manually;
the pointer to this buffer is stored in a stack pointer.

In particular, the latter method is problematic, as the buffer
needs to be freed manually in case of error (currently there
are no error conditions between the place where it is set
to AVCodecParameters.extradata).

Most of these buffers are very small (<= 22B), so replace
the pointer to an allocated buffer with a stack buffer
and set the extradata directly for the one place where
the buffer may not be small.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-09-07 00:28:27 +02:00
compat configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
doc Revert "avcodec/mpeg12dec: Do not alter avctx->rc_buffer_size" 2023-09-06 10:27:12 -03:00
ffbuild configure: probe RISC-V Vector extension 2022-09-27 13:19:52 +02:00
fftools ffplay: port to lavu/tx 2023-09-01 23:59:11 +02:00
libavcodec avcodec/rv34_parser: Remove unused ParseContext 2023-09-07 00:28:01 +02:00
libavdevice configure: Set WIN32_LEAN_AND_MEAN at configure time 2023-08-14 22:57:28 +03:00
libavfilter avutil/internal: Don't auto-include emms.h 2023-09-04 11:04:45 +02:00
libavformat avformat/matroskadec: Redo handling extradata allocation 2023-09-07 00:28:27 +02:00
libavutil lavu/avstring: fix typo in av_strireplace function doxy 2023-09-06 01:12:56 +02:00
libpostproc version.h: Bump minor post 6.0 branch 2023-02-19 18:37:36 +01:00
libswresample libswresample: Prevent out of bounds. 2023-08-02 17:31:13 +02:00
libswscale avutil/internal: Don't auto-include emms.h 2023-09-04 11:04:45 +02:00
presets
tests fate/matroska: Add test for remuxing non-rotation displaymatrix 2023-09-07 00:28:27 +02:00
tools tools/target_dec_fuzzer: adjust threshold for RKA 2023-09-04 21:45:51 +02:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap mailmap: stop git lying about who I commit things as 2022-11-04 19:37:46 +01:00
.travis.yml Merge commit '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog Changelog: Add Support hevc,vp9,av1 codec fourcclist in enhanced rtmp protocol 2023-09-05 15:04:38 +08:00
configure vulkan: enable VK_KHR_cooperative_matrix 2023-08-26 23:14:53 +02:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
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 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 MAINTAINERS: change Leo Izen IRC nickname 2023-06-20 12:46:47 -04:00
Makefile tools: add an AV_CODEC_CAP_ENCODER_RECON_FRAME test tool 2023-03-28 13:00:42 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update after 5.1 branch 2022-07-13 00:31:42 +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 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.