
Trim the Presentation
With Camtasia Relay, you can edit your presentation to remove extra video at the beginning or end. Trim your presentation to remove any extra audio and video you do not want in your published presentation.
To Trim Your Presentation

After you finish recording, click Trimming to access the trimming tools.

Move the playhead to the location you want to set as the beginning of the presentation and click the Set presentation start button. The trimmed area is shown in red.

Move the playhead to the location you want to set as the end of the presentation and click the Set presentation end button.
The red area of the timeline is cut from the presentation. Once you submit or save the recording, you permanently lose this part of the recording.
If you want to remove the trim points, click Cancel trim (the red X button.) This removes the trim points and closes the trimming tools.
See also
What Happens to the Presentation After I Submit It?