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Janne Grunau 060464105b vp9: recon: Use emulated edge to prevent buffer overflows 
The arm/aarch64 horizontal filter reads one additional pixel beyond what
the filter uses. This can become an issue if the application does not
allocate larger buffers than what's required for the pixel data. If the
motion vector points to the bottom right edge of the picture this
becomes a read buffer overflow. This triggers segfaults in Firefox for
video resolutions which result in a page aligned picture size like
1280x640.
Prevent this by using emulated edge in this case.

Fixes: https://bugzilla.mozilla.org/show_bug.cgi?id=1881185
Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2025-01-03 17:53:49 -05:00
compat compat/w32pthreads: change pthread_t into pointer to malloced struct 2024-12-16 09:43:19 +01:00
doc avutil/channel_layout: add a 5.1.2 layout using side channels 2025-01-03 10:27:12 -03:00
ffbuild configure: Add wasm as a fake arch 2024-12-04 16:43:06 +08:00
fftools ffmpeg_sched: return better error code 2024-12-26 15:45:00 +05:30
libavcodec vp9: recon: Use emulated edge to prevent buffer overflows 2025-01-03 17:53:49 -05:00
libavdevice avdevice/dshow: fix unused variable warning 2024-10-17 13:04:17 +02:00
libavfilter avfilter/buffersrc: make channel_layout a CHLAYOUT type AVOption 2025-01-02 12:11:08 -03:00
libavformat avformat/dump: print only the actual streams in a tile grid group 2025-01-03 10:34:03 -03:00
libavutil avutil/channel_layout: fix definition of 5.1.4 layout 2025-01-03 10:27:12 -03:00
libpostproc */version.h: bump after release/7.1 branch 2024-09-24 17:10:35 +02:00
libswresample arm: Consistently use proper interworking function returns 2024-10-09 15:52:51 +03:00
libswscale swscale/utils: lazily allocate XYZ tables on CONFIG_SMALL 2024-12-26 20:31:36 +01:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests avformat/iamfdec: swap back and side streams if both are present 2025-01-03 10:27:13 -03:00
tools tools/target_dec_fuzzer: Adjust threshold for EACMV 2024-12-24 02:55:51 +01:00
.gitattributes lavf/assenc: normalize line endings to \n 2024-02-11 17:01:07 -08:00
.gitignore .gitignore: add exclusions for shader .c files 2024-11-18 07:54:21 +01:00
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog avformat: bump version for enhanced flv 2024-12-27 20:24:23 +01:00
configure configure: Include quotes around pkg_version 2025-01-02 09:23:00 +01:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2 Rename COPYING.GPL --> COPYING.GPLv2 and COPYING.LGPL --> COPYING.LGPLv2.1. 2009-06-05 09:51:31 +00:00
COPYING.GPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3 Add configure option to upgrade (L)GPL to version 3. 2009-06-05 11:04:03 +00:00
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
INSTALL.md INSTALL: explain the circular dependency issue and solution 2024-11-03 19:35:23 +01:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: Lauri is still available but is really low on time nowadays 2024-11-28 23:19:00 +01:00
Makefile configure: Add wasm as a fake arch 2024-12-04 16:43:06 +08:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +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.