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Steven Liu ff97be6e23
avformat/dashdec: check value valid after read value from mpd xml 
before this commit ffmpeg get Heap Buffer Overflow in DASH Demuxer
via Negative Start Number.
Check the value from mpd xml, set the value to 0 if get negative value.

Fixes: heap buffer overflow
Found-by: Zhenpeng (Leo) Lin from depthfirst
(cherry picked from commit a97632827d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2026-05-05 15:20:59 +02:00
.forgejo forgejo: backport CI job names 2026-01-02 20:06:42 +01:00
compat avfilter: add chromakey_cuda filter 2022-07-10 17:20:15 +02:00
doc fate: add missing options in config template 2026-05-05 15:20:50 +02:00
ffbuild all: apply linter fixes 2025-12-03 20:26:49 +01:00
fftools fftools/ffmpeg_mux_init: Fix double-free on error 2025-11-23 04:32:15 +01:00
libavcodec lavc/j2kdec: Do not ignore colour association for packed formats 2026-05-05 15:20:59 +02:00
libavdevice avdevice/dshow: Initialize 2 pointers 2025-08-04 16:35:26 +02:00
libavfilter avfilter/scale_eval: Use 64bit for factor_w/h 2026-05-05 15:20:58 +02:00
libavformat avformat/dashdec: check value valid after read value from mpd xml 2026-05-05 15:20:59 +02:00
libavutil all: apply linter fixes 2025-12-03 20:26:49 +01:00
libpostproc libpostproc: check minimum size 2025-08-04 16:36:04 +02:00
libswresample all: apply linter fixes 2025-12-03 20:26:49 +01:00
libswscale swscale/utils: zero init filter memory as before 2026-05-05 15:20:59 +02:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests all: apply linter fixes 2025-12-03 20:26:49 +01:00
tools tools/check_arm_indent: skip empty glob 2025-11-30 21:47:40 +01:00
.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: add entry for myself 2021-03-09 02:09:55 +00:00
.travis.yml Merge commit '899ee03088' 2019-03-14 15:53:16 -03:00
Changelog Update for 5.1.8 2025-11-26 02:54:17 +01:00
configure configure: Clearer documentation for "disable-safe-bitstream-reader" 2025-08-04 16:36:01 +02:00
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 all: apply linter fixes 2025-12-03 20:26:49 +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 2023-03-16 14:48:40 +01:00
INSTALL.md INSTALL: explain the circular dependency issue and solution 2025-08-04 16:35:40 +02:00
LICENSE.md avfilter/vf_geq: Relicense to LGPL 2019-12-28 11:20:48 +01:00
MAINTAINERS MAINTAINERS: Update the entries for the release maintainer for FFmpeg 2024-07-21 17:20:25 +02:00
Makefile Makefile: Prompt for reconfigure on lavc/hwaccels.h modification 2022-07-01 00:34:38 +02:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE Update for 5.1.8 2025-11-26 02:54:17 +01:00
RELEASE_NOTES RELEASE_NOTES: Based on the version from 5.0 2022-07-20 18:24:16 +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.