In one sequence only, no video plays in monitor, but, audio is heard. What have I done ?
The same H.264 mov clips when set in new sequence plays ok ?
Thanks Ann & Glenn,
I accidentally hit Toggle Track Output "EYE" Key and, disabled the monitor, to the left of the Opacity handle, in 6 years on other Premiere Pro I have never done that , the darkened display did not help, even Automate to Sequence seemed to disappear in CS5.5.1. But, all is now well thanks to you both it gave me the clue.