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Michael Niedermayer 1fedba3c35 avcodec/tiff: Enforce increasing offsets 
This may break some valid tiff files, it appears the specification does not require
the offsets to be increasing. They increase in the 2 test files i have though except
the last offset which is 0 (an end marker) and for which a special case is added to
avoid asking for a sample for that end marker.

See: [FFmpeg-devel] [PATCH 2/2] avcodec/tiff: Detect infinite retry loop
for an alternative implementation

Fixes: Timeout (Infinite -> Finite)
Fixes: 15706/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5114674904825856

This variant was requested by paul on IRC
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>
 		2019-08-11 19:13:21 +02:00
compat compat/cuda: Change inclusion guards 2019-08-05 12:07:09 +02:00
doc doc/fate: Document how to request samples upload access 2019-08-09 01:33:49 +02:00
ffbuild build: add support for building CUDA files with clang 2019-08-04 19:08:08 +02:00
fftools ffmpeg_opt: Respect default disposition when select audio/video 2019-07-03 10:33:44 +08:00
libavcodec avcodec/tiff: Enforce increasing offsets 2019-08-11 19:13:21 +02:00
libavdevice lavd/v4l2: produce a 0 byte packet when a dequeued buffer's size is unexpected 2019-07-30 12:05:52 +02:00
libavfilter lavf/showinfo: use error level when get invalid sidedata 2019-08-08 17:57:25 +08:00
libavformat avformat/vividas: Fix another infinite loop 2019-08-11 19:13:21 +02:00
libavresample
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libavutil avutil/mips: Avoid instruction exception caused by gssqc1/gslqc1. 2019-08-02 19:01:51 +02:00
libpostproc Bump minor versions again on master to keep 4.2 versions separate from master 2019-07-21 18:36:31 +02:00
libswresample Bump minor versions again on master to keep 4.2 versions separate from master 2019-07-21 18:36:31 +02:00
libswscale Bump minor versions again on master to keep 4.2 versions separate from master 2019-07-21 18:36:31 +02:00
presets
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tests compat/cuda: Change inclusion guards 2019-08-05 12:07:09 +02:00
tools tools/zmqsend: Avoid mem copy past the end of input buffer 2019-08-09 23:18:58 +02:00
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Changelog build: add support for building CUDA files with clang 2019-08-04 19:08:08 +02:00
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MAINTAINERS MAINTAINERS: Add my GnuPG fingerprint. 2019-08-11 12:08:15 +02:00
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RELEASE RELEASE: Update value for post 4.2 branch 2019-07-21 18:37:32 +02:00
configure lavc/videotoolboxenc: add hdr10, linear, hlg color transfer function for videotoolboxenc 2019-08-11 10:52:15 -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 a mean to alter decoded Audio and Video through chain of 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.