When every subtitle is early or late by the same amount, move the whole track. Keep the words and cue lengths while adjusting their place in time.
Download nowApple Silicon · macOS 14.4 or later · 7-day free trial
Polyglot 1.10 · Prepared sample project
Open a saved track from Files, or import an SRT or VTT through Translate. Open the SRT, VTT or saved project and optionally attach the matching video. Compare speech and subtitles near the beginning, middle and end. A constant delay suits this tool; a gap that grows over time needs drift correction in a suitable editor.
Choose Adjust subtitle timing from Export. Select Earlier or Later and enter seconds, including milliseconds. The app shifts the original, completed translations and saved translation progress together. It rejects offsets that would move any cue before zero.
Check playback again and use Reset timing to remove the accumulated offset if needed. Save your adjusted track as SRT or VTT under a new name. Timing adjustments are saved in the local project and remain free after the trial.
No. You choose a fixed offset. The app does not listen for alignment, stretch timing, fix frame-rate drift or retime individual cues.
Every language and saved partial translation moves by the same amount, keeping source and translated cue timing aligned.
Reset timing removes the total accumulated offset and returns every track to its timing before those adjustments. Your original imported subtitle file is kept.
Polyglot for Mac
Subtitles, translations, transcripts and video. Right on your Mac.
Apple Silicon · macOS 14.4 or later · 7-day free trial
Polyglot