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James Almer
05bd55ff6e
The lavf AV1 CBS implementation disables metadata, tile lists and padding, but movenccenc.c sees the default AV1RawOBU definition. On 32-bit MinGW, the metadata member raises the union alignment from four to eight bytes, placing obu at offset 16 in the caller instead of offset 12 in CBS. Consequently AV1 CENC reads the wrong fields and fails to write tiles. Move the feature definitions into the common lavf CBS header so that the parser and its callers use the same AV1RawOBU layout. Keep the reduced set of parsed OBU types. Add a FATE encryption/decryption test using the existing nonuniform-tile AV1 sample. The test fails before this change with GCC -m32 -malign-double (which reproduces the relevant MinGW layout) and passes afterwards with the same reference on that configuration and AArch64. Fixes #23069. Assisted-by: Fairy Signed-off-by: James Almer <jamrial@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 means to alter decoded audio and video through a directed graph of connected 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.