I’m having a similar problem. I am producing videos of presentations that were given using powerpoint or keynote slides. I am inserting the slides manually into the video (and shrinking the presenter into the corner and the slides into the opposite corner so that the slides are easier to see). The problem that I have is that the time period for each slide is limited to 1-minute, 10-seconds. This makes it a huge hassle to edit the video, because I have to put multiple copies of the slides back to back and reformat (resize and reposition) every single one of them independently.
So my question is: Is there a way to extend the time for still photos beyond 1:10?
P.S. I’m using fce.