Partial Sync Shifter
Apply different offsets to different sections of your subtitle file. Useful when subtitles drift or have multiple sync break points.
.srt
Drop your .srt file here
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How partial sync works
Define one or more ranges with a From / To timestamp and an offset in seconds. Subtitles whose start time falls within the range will be shifted by the given amount. Ranges that overlap are applied in order.
Example
If subtitles are fine for the first 20 minutes but then run 2 seconds late, add a range: From 00:20:00 · To (blank = end of file) · Offset -2.0