4.5

111Compressor User Guide
Add a new caption
You can also add new captions to an existing captions file.
1. In the Compressor preview area, drag the playhead to a point in your video where you
want to insert a new caption.
2. Click the “Add a caption” button near the bottom of the Closed Captions inspector or
Subtitles inspector.
3. Enter caption text in the window that appears, then click OK.
The new caption with a default duration of two seconds appears in the preview window at
the timecode start point.
WARNING: Adding a new caption with too many characters may introduce position errors.
And adding a caption that overlaps spatially or temporally with an existing caption may
introduce position or timing errors. Captions with errors are highlighted in red in the
Captions list or Subtitles list. For more information about caption timing, see Adjust caption
timing in Compressor.
Delete a caption
• In the Captions list or Subtitles list in Compressor (at the bottom of the Closed Captions
inspector or Subtitles inspector), click a caption, then press Delete.
Adjust caption timing in Compressor
When you add captions to a job in Compressor, the timecode values in the imported
captions file (an iTT file or an SRT file) are synchronized to the timecode in the video
source file. (If you want to see the timecode values in an iTT or SRT file, try opening the
file in the macOS TextEdit app.)
In Compressor you can modify the timing of captions and fix timing errors by adjusting a
caption’s timecode start point, end point, or duration.
Change a caption’s start point, end point, or duration
1. In the Captions list or Subtitles list in Compressor (at the bottom of the Closed Captions
inspector or Subtitles inspector), click the caption you want to modify.
The playhead
in the preview area jumps to the timecode start position of the caption
you selected, and the caption’s timing information appears in the Caption Start, Caption
End, and Caption Duration fields in the inspector.