Background video stops working after a few seconds in Screenflow
I have Screenflow 6.2 and green screened myself using the imac built in camera. I then imported a motion background from videoblocks and put it in the timeline. But when I run it the video works for a few seconds then just stops and hangs up.
My question is:
1. How do I stop this from happening, and
2. How do I repeat the clip over and over until the end of the video?