Playing an export from Avid Media Composer. Exported as XDCam HD 50Mbps. The video plays forward and backward just fine. When I use the arrow key to back up frame-by-frame, also fine. But when I hold the back arrow key down, I get what you see in the attached image. Is this just a playback glitch or should I be worried about the integrity of the exported video? BTW, it's only the XDCam exports that doe this. If I use Switch to play MXF files, I don't get this issue. Any thoughts?