PTHDN Video Question Bouncing to Quick Time

[K Roche]

I am not sure if this is the right forum the Video forum seems geared to Media Composer

I was trying an experiment where I made a QT screen recording of some features and some moves I was making in a Pro Tools session which worked fine. I saved it to my desk top . I could click on the QT and it would play fine.

I imported the OT vid back into my session to do a voice over . That worked
I then selected the bounce to Quick Time selected to bounce audio also just left the rest as the default that showed on the export window and exported which also worked it shows up on the desk top like any QT movie with the first scene showing in a thumbnail but when I try to play it QT it opens but will not play ???? do I need to do something in the export window??? Thanks Kevin