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Michael Niedermayer 2cc7b87bdb avformat/mov: reject out of range ispe dimensions, avoid overflow summing HEIF tile dimensions 
ispe width/height are read as uint32 but stored in int HEIFItem fields;
values above INT_MAX became negative, and read_image_grid() summing such
widths into coded_width overflowed int:
libavformat/mov.c:10404:33: runtime error: signed integer overflow: -2147483647 + -2147483647 cannot be represented in type 'int'

Also accumulate the grid tile dimensions and running offsets in 64bit
and validate the totals, as up to 256 tile columns of individually
valid widths can still overflow int.

Found-by: 51511
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2026-06-12 02:00:36 +00:00
.forgejo forgejo/codespell: exclude tests/checkasm/ext 2026-06-04 11:44:22 +02:00
compat avfilter/scale_cuda: fix color bleeding in lanczos scaling 2026-04-04 11:31:16 +00:00
doc docs: refine issue tracker transition references 2026-06-10 06:35:21 +00:00
ffbuild swscale/x86/uops: generate NASM macros using uops_macros.h 2026-06-09 18:27:20 +02:00
fftools fftools/ffmpeg_dec: deep-copy subtitle_header to fix use-after-free 2026-06-12 00:45:29 +00:00
libavcodec opus: qualify libavcodec include paths 2026-06-12 00:49:14 +00:00
libavdevice avdevice/gdigrab: make overlay window layered 2026-06-10 12:56:20 +00:00
libavfilter avfilter/vf_scale_d3d11: ensure guids are defined 2026-06-10 15:08:12 +00:00
libavformat avformat/mov: reject out of range ispe dimensions, avoid overflow summing HEIF tile dimensions 2026-06-12 02:00:36 +00:00
libavutil hwcontext_vulkan: fix BGRA/BGR0 images 2026-06-12 10:14:33 +09:00
libswresample libswresample/arm: Change to the common indentation size 2026-04-29 13:49:27 +03:00
libswscale hwcontext_vulkan: fix BGRA/BGR0 images 2026-06-12 10:14:33 +09:00
presets
tests swscale/ops: generalize SwsReadWriteOp.packed to enum 2026-06-11 16:27:47 +00:00
tools tools/target_dec_fuzzer: Bound cumulative get_buffer allocation 2026-06-12 01:56:23 +00:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore swscale/x86/uops: generate NASM macros using uops_macros.h 2026-06-09 18:27:20 +02:00
.mailmap mailmap: add entry for myself 2025-08-08 21:51:15 +00:00
Changelog avcodec/bsf: add dovi_split BSF 2026-05-31 16:58:23 +02:00
configure swscale/x86: use correct HOSTCC_E flag instead of CC_E 2026-06-10 15:04:50 +00:00
CONTRIBUTING.md CONTRIBUTING.md: add blank line after top heading 2026-04-20 12:32:50 +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 INSTALL.md: add title heading and normalize section levels 2026-04-20 12:32:50 +00:00
LICENSE.md Remove libpostproc 2025-05-07 15:35:47 +02:00
MAINTAINERS docs: refine issue tracker transition references 2026-06-10 06:35:21 +00:00
Makefile build: remove checkasm_header_config_generated.h on distclean 2026-06-06 23:58:13 +02:00
README.md README.md: use consistent ATX heading style 2026-04-20 12:32:50 +00:00
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.