Dave, After much testing, I have come to the conclusion that you should not Convert/Trim a video clip by clicking on the video clip in the Slide List. If you try to Convert/Trim a video clip in the Slide List, you will get your trimmed video clip, but the video will stop at the end of the trimmed clip but the duration of that clip will not change to the shorter trimmed length. The duration will not change. The last frame of the trimmed video will stay on the screen for the remainder of the origi