96ad55df5b
Commit a2b1dd0ce301450a47c972745a6b33c4c273aa5d added support for parsing annex B HEVC extradata to extract profile and level information. Yet it only checks for there to be enough data left for the startcode and the first byte of the NAL unit header and not for the full NAL unit header; it simply presumes the second byte of the NAL unit header to be present and skips it. Then the remaining size of the extradata is calculated which ends up negative if the second byte of the NAL unit header is not present. Yet when calling ff_nal_unit_extract_rbsp() it will be converted to an uint32_t and end up as UINT32_MAX which will cause mayhem. This is solved by making sure that there is always enough remaining extradata that could (pending 0x03 escapes) contain the data that we are interested in. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements 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,ismindexandqt-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.