Movie Limits

Engage '09, .mp4 files

I am putting together an FAQ with 33 questions. With each question there is a video response ranging between :03 - 1:33, with most being about 15 seconds (7:29 total). They are .mp4 files. After inserting all 33 clips and previewing I found out that only about 9 of the clips worked properly, the others had no audio, but the video ran fine. I deleted the ones that worked and previewed the presentation and now 11 others worked. I deleted those 11 and now all but a few of the remaining worked.

I have eliminated the possibility of it being an issue with the files themselves.

So is this some type of size/time limit I'm hitting? It's only 7:29 and 8.85 MB total.

FYI: I also have it set up where when you click the question, there is audio that reads you the question, and then you can click Play to play the video.

I just started a brand new Presentation, added only the video clips, and only 7 played properly.