Styled subtitles, reduced to words and timing.

ASS exists because SRT could not do enough. It carries fonts, colours, sizes, positioning, rotation, fades, karaoke timing and vector drawing, which is why it became the format for typeset and fansubbed video.

None of that survives a conversion to SRT, and no tool can change that, because SRT has no syntax for any of it. What you get back is the dialogue and the cue times. If the styling was decorative, that is a fair trade for a file every player and platform accepts. If the styling was carrying meaning, positioning that distinguishes two speakers, or a sign translated in place on screen, then converting loses information and it is worth knowing that before rather than after.

The first is the clock. ASS writes fractions of a second in centiseconds, so 0:00:01.50 means one and a half seconds. SRT writes milliseconds. A converter that copies that fractional part across without scaling it turns one and a half seconds into one and five hundredths, and every cue in the file fires early. Here a two digit fraction is read as centiseconds, so 0:00:01.50 becomes 00:00:01,500.

The second is the column order. The fields on a Dialogue line are not fixed by the format. They are declared by the Format line at the top of the events section, and a file that lists them in a different order or omits one is still valid. This converter reads that header and maps the fields accordingly, rather than counting commas and hoping. That also means text containing commas survives, because the text field is taken as everything after the declared fields rather than as one more comma-separated value.

Comment lines are skipped and counted. Those are notes from whoever made the file, usually translator or typesetting remarks, and treating them as dialogue leaves stray lines in the output.

Styled files often carry long lines, because the styling was holding them together. Once that is gone the lines are just long. Run the result through the subtitle validator to see line lengths and reading speed, and the subtitle line breaker to re-break anything over the limit without touching the timing.

For a web player, convert onward with the SRT to VTT converter. For a plain transcript, the SRT to text converter strips the timing entirely. To create captions from a video rather than convert an existing file, start in the AutoCaption caption generator.