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Michael Niedermayer 1291568c98 avcodec/exr: Avoid signed overflow in displayWindow 
The inputs are unused except for this computation so wraparound
does not give an attacker any extra values as they are already fully
controlled

Fixes: signed integer overflow: 0 - -2147483648 cannot be represented in type 'int'
Fixes: 45820/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5766159019933696

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2022-04-03 23:22:54 +02:00
compat Replace all occurences of av_mallocz_array() by av_calloc() 2021-09-20 01:03:52 +02:00
doc lavfilter: Add SITI filter 2022-04-01 20:27:43 +02:00
ffbuild Fix libversion.sh for split version headers, to unbreak shared library builds 2022-03-17 11:11:17 +02:00
fftools fftools/opt_cmdutils: fix printing known channel layouts 2022-03-25 08:42:45 -03:00
libavcodec avcodec/exr: Avoid signed overflow in displayWindow 2022-04-03 23:22:54 +02:00
libavdevice avdevice/dshow: fix regression 2022-03-29 23:25:33 +02:00
libavfilter lavfi/vf_siti.c: Relicense to LGPL 2.1 2022-04-02 13:14:00 +02:00
libavformat avformat/libsrt: use a larger buffer for find_info_tag 2022-03-30 10:30:02 +08:00
libavutil avutil/channel_layout: return earlier on UNSPEC layouts in av_channel_layout_subset() 2022-03-25 17:10:39 -03:00
libpostproc Keep including the full version.h when headers are included externally 2022-03-19 00:01:57 +02:00
libswresample swresample/rematrix: fix typo in clean_layout() 2022-03-28 00:07:42 -03:00
libswscale Keep including the full version.h when headers are included externally 2022-03-19 00:01:57 +02:00
presets
tests lavfilter: Add SITI filter 2022-04-01 20:27:43 +02:00
tools avcodec/codec_internal: Add FFCodec, hide internal part of AVCodec 2022-03-21 01:33:09 +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 '899ee03088d55152a48830df0899887f055da1de' 2019-03-14 15:53:16 -03:00
Changelog lavfilter: Add SITI filter 2022-04-01 20:27:43 +02:00
configure avcodec/bsf: Add FFBitStreamFilter, hide internals of BSFs 2022-03-23 23:45:45 +01:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
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CREDITS
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: add myself as maintainer for libsrt protocol 2022-04-01 09:21:50 +08:00
Makefile Makefile: check config_components.h when comparing timestamps in component list files 2022-03-17 18:35:41 -03:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE Bump Versions before release/4.4 branch 2021-03-20 01:01:12 +01:00

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.