Video Problem iPad - Lines showing on edges
New to the forum and Articulate Storlyine.
I'm creating a presentation in Storyline that has videos on most slides, they have white backgrounds as do the slides they are going on. The videos are all acreen captures that I have created in Replay. When I insert them they look fine and the published web version is fine. But when played on the mobile player on an iPad thin black lines are appearing on some, not all, of the videos on the bottom edge, left edge or both on some. I've tried recropping but this doesn't make any difference.
Any help appreciated.