vtt2ass-cstyle

A .vtt subtitle converter to .ass and .srt.

Building

Clone the repo with

git clone --recurse-submodules https://github.com/moex3/vtt2ass-cstyle

Make sure the required dependencies are present: harfbuzz and freetype2.

Build with

make

By default it will build a debug build.

To generate both .srt and .ass subs in one run:

./v2a srt --output out.srt ass --output out.ass --width 1920 --height 1080 --font ~/.local/share/fonts/ipaexg.ttf  input.vtt

This will generate out.srt and out.ass with the specified video dimensions, using the ipaexg font from the the input.vtt file.

Handle ruby tags for srt by enclosing them in parenthesis, and by positioning the text correctly for ass. NO vertical ruby for now.
Basic vertical text support for ass subtitles.
Bold, italic and underline support.

No overlap detection.
No region support.
The positioning can be buggy (I can never get that right).
Not tested with real word subtitles. If you want to use it, and it fails on that subtitle, make an issue.
I wrote the vtt tokenizer myself, not according to the spec.
Codebase quality. Enough said.