My only suggestion would be to have a better UX for when users are creating the clip. I wasn't for sure how long a certain section of the video would last, so I had to watch the video until the section ended, and note the end time. I then subtracted the end time from begin time to determine how long the clip should be. Not sure having every frame displayed would be best, but being able to indicate start/stop thresholds visually, might help. Bookmarked!