Closed Caption File Format Guide for YouTube

Youtube (Without Integration)

YouTube recommends Scenarist (.scc) format.  Rev also recommends TTML or WebVTT; any of these three options provides some control over appearance of your captions on the YouTube platform.

Compatible formats:

SubRip (.srt)

WebVTT (.vtt)

DFXP/TTML (.dxfp)

Scenarist (.scc)

SAMI (.sami)