Adjusting caption timing
You can drag the edges of the captions to reposition them on the timeline. The waveform can help as a visual guide to the audio should that be needed.
Click and drag in the middle of the caption to reposition the entire caption.
Captions will turn red if they exceed the limits for minimum or maximum durations, or if they overlap.
You can trim captions with the keyboard shortcuts "[" and "]". Position the playhead to the point at which you'd like to trim the caption, and hit "[" to change the caption's in-point, or "]" to change the caption's out-point.
Ripple edit is a tool for adjusting many captions simultaneously. This can be useful when importing captions from other sources, or if a project's original video has changed, and you need to re-time your captions to fit a new edit.
To use Ripple edit, click anywhere outside of the spreadsheet view, and hit the "R" key. That toggles Ripple edit on, and you'll see a notification confirming this.
Now, drag a caption in the timeline. Every single caption to the right of the caption you're dragging will be moved as well. To move all the captions in the timeline, simply drag the first caption.
Once you're finished, remember to hit "R" again to toggle Ripple edit off.