Subtitles

Three formats describe the same thing in three incompatible spellings: SRT separates milliseconds with a comma, WebVTT with a full stop and an optional hour field, ASS with centiseconds inside a styled dialogue line. Converting between them is a text problem, so it happens here rather than on a server — the file is read on your machine and never uploaded.

The timing tools are the reason most people open something like this. A constant offset fixes subtitles that start too early or too late. A rate factor fixes the worse case, where a file written for 25fps drifts further out of sync the longer it plays; the usual film and broadcast conversions are presets. It will also trim overlapping cues, sort a file that arrived out of order, and strip the styling tags that plain players show literally.