Subtitle sync and timing guide

Subtitle sync depends on accurate timestamps, readable cue length, and a media file that matches the subtitle file. Automatic Subtitles creates timed subtitles from the actual audio so the first SRT or VTT export starts from aligned speech segments.

Create synced subtitles
Timing from speech

Transcription creates subtitle cues from detected speech instead of guessing timestamps manually.

Readable cue length

Shorter subtitle text is easier to read and less likely to feel out of sync during playback.

Matching media files

Sync problems often appear when the subtitle file belongs to a different cut of the video.

Why subtitles go out of sync

Subtitles can drift when a video has a different frame rate, intro, ad break, edit, or duration than the file used to create the captions. A subtitle file may also look wrong if the video already has burned-in subtitles or if an export was made from a short clip but opened against the full program.

How to get better timing

  1. Use the exact audio or video file that will be published.
  2. Generate fresh SRT or VTT subtitles from that file.
  3. Review the first minute, the middle, and the end to catch drift early.
  4. Use subtitle editing software only for final manual polish.