Exported Videos Black

[earlgreyt21]

Hi there,

I've always had troubles with videopad and exporting but usually I manage to resolve the problems by editing slightly my content.

I've been making a birthday video for a friend on my Dell laptop (which is due this friday the 5th Feb). It's a series of videos from all their friends/family with a music souond track below. Every time I export it, not all but many of the videos are black with audio still functioning. I have tried numerous different exporting methods such as changing to avi, changing to MPEG24, changing from variable to constant frame rates, etc, and the problem is still recurring. Does anyone have any advice?