Is there a way to change font size or change frequency of how often captions change?

[truestorym]

No description provided.

[codefaux]

There is not, but font size could be added as a feature request. (I'm not the developer.)

Grouping of captions would be more difficult.

When saving captions as SRT instead of burning them into the video, you can use the player's subtitle settings to change the subtitle size, and/or use an external tool like SubEdit to split them into smaller blocks of text -- I believe (but cannot currently confirm) that it had a tool to auto-fix common issues, which included overly long lines.

[surajtripathy07]

I've created a simple PR #66, this generates and overlays SRT one word at a time.. (which I wanted for myself).. The PR is not merge ready, but works, if people find it useful, they can try and I'll be happy to make it merge ready, and try and we can get it merged