Compare two SRT subtitle files

Did a spelling correction move a caption? Open the approved SRT and its revision to see every changed line, start time and end time. Add a reference video to listen at the exact cue. Your files stay in your browser.

Hear the word that prompted the correction

Choose “Try the caption example,” then “Seek to revised cue.” At 1.44 seconds, listen for “Um, use the green one for print.” The original preview shows “and.” The two teaching SRTs illustrate a wording-only correction. The video is the actual first preview from the edit. You can also watch the corrected export to see how the rendered caption regrouped the words.

Review a subtitle handoff

Use UTF-8 SRT files from the same cut with matching cue numbers in the same order. Text differences include line breaks and formatting tags. If one cue became two, or a new intro changed the numbering, the checker flags the structural change. Review those passages in your subtitle editor before comparing the wording.

If the producer approved one name correction, check every changed cue in context and confirm the timing count is zero. If a timing change was intentional, seek to both starts in the reference video and listen against the delivery cut. Download the JSON report to keep the old and new text and time windows with your handoff. To apply a wording change to a video, choose “Use this correction in Valmera” and open the matching footage in Studio. AI editing requires a paid plan.

For captions already drawn into a video, follow the frame-by-frame correction. To run the same kind of SRT check offline from a terminal, use the caption revision guide and Python checker.