Trimming a clip in Inspector

When you trim an asset, you change the length of the viewable asset, restricting it to the material between the Trim In and Trim Out points. The material outside the trim marks is not deleted. It remains on disk but is not viewable. To use the Trim Asset operation, you must be logged on with a user account to which the Trim Rights role is assigned. If the role is not assigned, the Trim Asset operation is not available.

Load the asset into the Inspector.
Navigate to the desired starting point using the scrub bar, and click the Mark In button. ( I)
Navigate to the desired end-point using the scrub bar, and click the Mark Out button. ( O) Where timecode is displayed you can also right-click the timecode type label and select Clear Marks to clear all current in/out marks.
Click on the Actions drop-down arrow, and select Trim Asset.