gx
4795b7a7f1
Закрывает архитектурный недостаток: камера / cuframes-pub умирает →
pipeline filter показывает "застывшую картинку" этого input (framesync
EXT_INFINITY mode), TV видит зависшее изображение и не понимает что не так.
Now: per-input wall-clock detection of frame staleness. Если PTS не меняется
> placeholder_timeout_ms (default 2000), filter:
1. Black-fill cell rect (Alpha_Fill_Y/UV kernels)
2. Blit placeholder atlas (default "offline" icon, loaded из icon_dir)
centered внутри cell
Pipeline продолжает работать. Остальные cells normal video. User видит
explicit "НЕТ СИГНАЛА" placeholder вместо stuck frame.
Options:
placeholder_timeout_ms (default 2000, 0=disable)
placeholder_icon (default "offline" — resolved через icon_dir)
Per-input state:
last_frame_pts[MAX_CELLS] — last seen PTS per pad
last_change_wall_us[MAX_CELLS] — wall-clock когда PTS changed
Тест: docker stop cuframes-pub-back_yard → через ~2s в back_yard cell
появляется "НЕТ СИГНАЛА" placeholder, остальные 3 cells продолжают
normal video с 25 fps.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.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.