How do I set the A-B cut function in PowerProducer Encore?

If you want to trim a video clip within a certain period of playtime, drag the left and right markers directly below the preview window to select the part of video you want. The beginning and ending time of this clipped video will be shown on the left of the screen in the "AB Cut" settings. Please note that the "mark-in time" and "mark-out time" cannot be typed in directly. 

For more information on how to use PowerProducer, you can download the User's Guide.