Cleanup Video
By: Mike Paladino - Revised: 2006-06-27 devinTrim video by selecting a portion of video with the crop markers and then pressing the delete key.
Or you can select "Edit" -> "Crop" to delete the video that is outside of the crop markers.
You can also split a video clip into 2 parts by moving the Playhead where you want the split and selecting "Edit" -> "Split Clip at Playhead".
Edit Split Video at Playhead
After the clip is split into two parts