Ruk DoeandClaude Opus 5.5 ad5c00b0ce avcodec/libaribcaption: keep the clear when ass mode skips every region as ruby
With ignore_ruby=1 and ass_single_rect=0, a caption whose regions are all
ruby skips every region and returned no event, even when it carries a
clear screen (CS). The previous caption then stayed on screen. The bitmap
path and ass_single_rect=1 already erase it in that case.

Emit the empty clear event in that case too.

Such captions do occur in broadcasts: among 2293 captions from 40 recent
Japanese TV recordings, 3 carried CS with only ruby regions. With this
change, ignore_ruby=1 output gains exactly those 3 clear events, and
output with the default options is unchanged for all 40 recordings.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DdDiDRusmi6eD7qSrKBjHb
2026-11-06 04:39:07 +00:00
2025-08-08 21:51:15 +00:00
…
2025-06-23 14:48:40 +02:00
2025-08-14 08:42:29 -04:00

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 Forgejo or 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.

See https://ffmpeg.org/developer.html for more information.

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