I'm creating a Flash presentation which contains a video. The video uses action script to play an flv. I put a mask on top of the video to conceal the black bars on the top and the bottom of the video. When I view the presentation (swf and exe), there is a very quick flash right before the video starts. I have checked and found out for sure that the flash is not in the video file itself. When I got rid of the mask, the flash disappeared. However, I do need to mask the video.
I have four different videos in the presentation. I do the same masking and setup on all of them. The strange thing is that the flash only happens to one of them.
If someone can give me an advise or suggestion on this, I would very appreciate it.