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Frank Plowman 2d79ae3f8a lavc/vvc: Error if SPS ID is duplicated within CVS 
Key line from the spec is:

"All SPS NAL units with a particular value of sps_seq_parameter_set_id
in a CVS shall have the same content."

Prior to this patch, the VVC decoder's behaviour on encountering a
duplicated SPS ID (within the entire bitstream, not restricted to
a CVS) was simply to replace the entry in the SPS lookup table with the
new data.  Illegal bitstreams with multiple SPSs in the same CVS sharing
an ID but differing elsewhere could cause all manner of issues.

The patch tracks which SPS IDs have been used in the given CVS using the
new sps_id_used field of VVCParamSets.  If it encounters an SPS with an
ID already in use and whose content differs from the previous SPS, it
throws an AVERROR_INVALIDDATA.

Signed-off-by: Frank Plowman <post@frankplowman.com>
2024-04-07 10:13:45 +08:00
compat avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
doc doc/encoders: add missing libxvid option 2024-04-05 17:20:54 -03:00
ffbuild makefile: Clean up missed object files with "make clean" 2024-03-10 23:45:51 +02:00
fftools avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libavcodec lavc/vvc: Error if SPS ID is duplicated within CVS 2024-04-07 10:13:45 +08:00
libavdevice avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libavfilter libavfilter/dnn_io_proc: Take step into consideration when crop frame 2024-04-04 14:26:57 +08:00
libavformat lavf/lrc: fix comments in headers 2024-04-06 12:59:56 +02:00
libavutil avutil/pix{desc,fmt}: add new matrix coefficients from H.273 v3 2024-04-03 21:31:35 +03:00
libpostproc avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswresample avutil/common: Don't auto-include mem.h 2024-03-31 00:08:43 +01:00
libswscale swscale/utils: Fix xInc overflow 2024-04-04 19:38:29 +02:00
presets
tests avcodec/ass,webvttdec: implement more portable curly brace escapes 2024-04-06 09:25:03 +02:00
tools tools/target_dec_fuzzer: Adjust threshold for RV30 2024-04-03 00:44:37 +02:00
.gitattributes lavf/assenc: normalize line endings to \n 2024-02-11 17:01:07 -08:00
.gitignore gitignore: add config_components.h 2022-03-17 18:35:41 -03:00
.mailmap .mailmap: Update my mailmap entry 2024-02-23 00:17:21 +01:00
.travis.yml Merge commit '899ee03088' 2019-03-14 15:53:16 -03:00
Changelog avcodec/liblc3: add encoding/decoding support of LC3 audio codec 2024-04-04 17:47:31 +02:00
configure avcodec/libaomenc: bump the minimum required version to 2.0.0 2024-04-05 14:32:08 -03:00
CONTRIBUTING.md
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1
COPYING.LGPLv3
CREDITS Use https for repository links 2023-03-01 21:59:10 +01:00
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 dvdvideo demuxer, rcwt muxer maintainer 2024-03-10 15:21:23 +01:00
Makefile tools: Add target_sws_fuzzer.c 2024-02-21 18:24:17 +01:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update after 7.0 branch 2024-04-02 13:02:39 -03:00

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.