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Michael Niedermayer 6084f07189
avcodec/utils: fix duration computation based on frame_bytes 
Fixes: signed integer overflow: 256 * 8396351 cannot be represented in type 'int'
Fixes: 482692578/clusterfuzz-testcase-minimized-ffmpeg_dem_SWF_fuzzer-5865521093607424

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2026-03-06 23:08:03 +01:00
.forgejo .forgejo/workflows: Test hardcoded tables 2026-02-14 20:15:13 +01:00
compat compat: Fix .def file generation for ARM64EC builds on Windows 2025-12-19 10:01:16 +00:00
doc doc/developer: Favor SI units where applicable 2026-03-06 04:29:52 +00:00
ffbuild configure: add detection of assembler support for SME2 2026-03-04 23:52:36 +02:00
fftools fftools/ffprobe: do not show refs when not processing frames 2026-03-05 13:49:59 +00:00
libavcodec avcodec/utils: fix duration computation based on frame_bytes 2026-03-06 23:08:03 +01:00
libavdevice avdevice/gdigrab: suppress int to pointer cast warning 2025-12-03 23:45:44 +00:00
libavfilter avfilter/dnn: fix missing set default value to options 2026-03-06 21:41:11 +08:00
libavformat avformat/avformat: Fix warning: assignment discards const qualifier from pointer target type 2026-03-06 15:59:20 +01:00
libavutil avutil/error: Fix overflow when negating 2026-03-06 17:28:00 +01:00
libswresample swresample/resample_template: add casts to avoid undefined overflows 2026-03-02 18:11:58 +01:00
libswscale swscale: explicitly track if a context is "legacy" or not 2026-03-06 19:06:33 +01:00
presets
tests fftools/ffprobe: do not show refs when not processing frames 2026-03-05 13:49:59 +00:00
tools tools/target_dec_fuzzer: Adjust threshold for G2M 2026-02-23 23:45:14 +01:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore vulkan: support shader compression 2026-01-12 17:28:41 +01:00
.mailmap mailmap: add entry for myself 2025-08-08 21:51:15 +00:00
Changelog fftools/ffprobe: do not show refs when not processing frames 2026-03-05 13:49:59 +00:00
configure configure: warn about excessive stack usage 2026-03-05 16:02:04 +00:00
CONTRIBUTING.md CONTRIBUTING.md: Add Forgejo 2026-02-22 04:39:22 +00:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1 all: fix whitespace/new-line issues 2025-08-03 13:48:47 +02:00
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
FUNDING.json Add FUNDING.json 2025-06-23 14:48:40 +02:00
INSTALL.md all: fix typos found by codespell 2025-08-03 13:48:47 +02:00
LICENSE.md Remove libpostproc 2025-05-07 15:35:47 +02:00
MAINTAINERS MAINTAINERS: add myself as whip maintainer 2026-01-11 04:24:55 +00:00
Makefile configure: add detection of assembler support for SME2 2026-03-04 23:52:36 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update to 8.0 2025-08-14 08:42:29 -04:00

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.