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xiongweixiao 8ce32a7cbb
lavf: vvc_probe: lower probe score for invalid SPS/PPS/IRAP order to avoid misdetection of mp3 as VVC 
The current vvc_probe function checks for SPS, PPS, and IRAP NAL units but does not enforce their detection order. This can lead to false positives when PPS or IRAP appear before SPS, causing malformed or non-compliant bitstreams to be incorrectly identified as valid VVC streams.

This commit modifies the logic to use boolean flags and enforces the correct detection sequence: SPS must be detected before PPS, and PPS before IRAP. This ensures more accurate probing and prevents invalid bitstreams from being misidentified.

For streams with wrong ordering a lower score is returned

This change addresses issues reported in:
- https://trac.ffmpeg.org/ticket/11496
- https://trac.ffmpeg.org/ticket/11087

Signed-off-by: xiongweixiao <xiongweixiaoxxw@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2025-05-12 11:07:35 +02:00
compat compat/w32pthreads: change pthread_t into pointer to malloced struct 2024-12-16 09:43:19 +01:00
doc Remove libpostproc 2025-05-07 15:35:47 +02:00
ffbuild ffbuild: fix include path for uninstalled .pc files 2025-04-22 21:04:36 +02:00
fftools fftools/ffmpeg: move elapsed time counter to the end of the status line 2025-05-11 18:41:55 +02:00
libavcodec avcodec/hevc/ps: Fix dependant layer id check 2025-05-09 22:27:04 +02:00
libavdevice avfoundation: Fix compilation for OSes other than macOS and iOS 2025-04-04 17:12:33 +03:00
libavfilter Remove libpostproc 2025-05-07 15:35:47 +02:00
libavformat lavf: vvc_probe: lower probe score for invalid SPS/PPS/IRAP order to avoid misdetection of mp3 as VVC 2025-05-12 11:07:35 +02:00
libavutil Remove libpostproc 2025-05-07 15:35:47 +02:00
libswresample libs: bump major version for all libraries 2025-03-28 14:44:34 -03:00
libswscale swscale/x86/rgb2rgb: Deduplicate ASM constants 2025-04-13 22:49:21 +02:00
presets
tests tests/fate/filter-video: Fix dependancy for codecview 2025-05-07 15:35:48 +02:00
tools Remove libpostproc 2025-05-07 15:35:47 +02:00
.gitattributes gitattributes: End merge conflicts in Changelog 2025-03-17 15:26:10 +01:00
.gitignore ffmpeg/repo: Add dot-folders in the repository root to .gitignore 2025-04-19 17:29:12 +02:00
.mailmap mailmap: add entry for myself 2024-07-15 01:59:37 +02:00
Changelog avcodec: add APV encoder using liboapv 2025-05-04 16:21:35 -03:00
configure Remove libpostproc 2025-05-07 15:35:47 +02:00
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: explain the circular dependency issue and solution 2024-11-03 19:35:23 +01:00
LICENSE.md Remove libpostproc 2025-05-07 15:35:47 +02:00
MAINTAINERS Remove libpostproc 2025-05-07 15:35:47 +02:00
Makefile configure: Add wasm as a fake arch 2024-12-04 16:43:06 +08:00
README.md README: fix typo and description of libavfilter 2021-10-08 09:44:34 +05:30
RELEASE RELEASE: update release number after release/7.1 branch 2024-10-09 01:55:50 +02:00

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.