No video content

Hi, I am using this program for an experiment.

I am using the latest iStopmotion and the Ipad Istopmotion external camera. The problem that I am having is that when I save a video, it does not. It says that there is no video content. “Cannot be opened because there is no video data.”

Apart from that I also have the problem that the external camera starts “glitching.” And eventually crashes.

Any help would be appreciated.