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Andreas Rheinhardt 3ab6a923d1 avformat/hlsenc: Don't segfault on uncommon names The parsing process of the AVOpt-enabled string controlling the mapping of input streams to variant streams is roughly as follows: Space and tab separate variant stream group maps while the entries in each variant stream group map are separated by ','. The parsing process of each variant stream group proceeded as follows: At first the number of occurences of "a:", "v:" and "s:" in each variant stream group is calculated so that one can can allocate an array of streams with this number of entries. Then the string is split along ',' and each substring is parsed. If such a substring starts with "a:", "s:" or "v:" it is treated as stream specifier and (if there is a correct number after ':') a stream of the variant stream is mapped to one of the actual input streams. Nothing actually guarantees that the number of streams allocated initially equals the number of streams that are mapped to an actual input stream. These numbers can differ if e.g. the name, the sgroup, agroup or ccgroup of the variant stream contain "a:", "s:" or "v:". The problem hereby is that the rest of the code presumes these numbers to be equal and segfaults if it isn't (because the corresponding input stream is NULL). This commit fixes this by modifying the initial counting process to only count occurences of "a:", "s:" or "v:" that are at the beginning or that immediately follow a ','. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>		5 years ago
compat	…
doc	avutil: bump version after addition of av_sat_add64 and av_sat_sub64	5 years ago
ffbuild	…
fftools	…
libavcodec	avcodec/binkaudio: Fix 2Ghz sample_rate	5 years ago
libavdevice	…
libavfilter	avfilter/vsrc_sierpinski: unbreak configuring rate value	5 years ago
libavformat	avformat/hlsenc: Don't segfault on uncommon names	5 years ago
libavresample	…
libavutil	avutil: bump version after addition of av_sat_add64 and av_sat_sub64	5 years ago
libpostproc	…
libswresample	…
libswscale	swscale: aarch64: Add a NEON implementation of interleaveBytes	5 years ago
presets	…
tests	checkasm: swscale: Fix running the hscale test on 32 bit x86	5 years ago
tools	tools/target_dec_fuzzer: Adjust threshold for PNG and APNG	5 years ago
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.travis.yml	…
CONTRIBUTING.md	…
COPYING.GPLv2	…
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COPYING.LGPLv2.1	…
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Changelog	avfilter/vf_scdet: add filter to detect scene change	5 years ago
INSTALL.md	…
LICENSE.md	…
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README.md	…
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configure	avfilter/vf_scdet: add filter to detect scene change	5 years ago

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.