软件包：python3-ttconv（1.1.0-1）

library and tool for converting timed text or subtitle formats

ttconv is a library and command line application written in pure Python for converting between timed text formats used in the presentations of captions, subtitles, karaoke, etc.

Input formats: TTML / IMSC, SCC / CEA 608, EBU STL, SRT

Output formats: IMSC / TTML, WebVTT, SRT

Note, that the tool is called ttconv, not tt, i.e. use it like this:

ttconv convert -i subtitles.ttml -o subtitles.srt

本页其他语言版本如下（如何设置默认文档语言）：