[codemonkey76]

Originally Posted by mikeytown2

Apply the fade in/out on the mask
http://avisynth.org/mediawiki/Mask
http://avisynth.org/mediawiki/Overlay

Another option is to Animate the opacity
http://avisynth.org/mediawiki/Animate

ps
ImageSource((...,0,0,...) is one frame
ImageSource((...,0,1,...) is two frames

sorry i am a bit of a newb still and it has taken me days to get that function to sort of work. So I just replace that last return line with what?

EDIT:
OK, i am researching what you have suggested, so should i create a clip, say 30 seconds of white and fade to black and vice-versa and use mask to apply it to the score clip? am i on the right track?