Apologies if this has been done to death before . . .
Okay - I've pan/crop a clip - I've made it smaller and have it creep left to right - done. Now I want to make the background, outside of this clip, white or transparent, I've got black/transparent. I've got other text apprearing behind it, and slide down past it. But I want the area around the clip "sitting" on a "white" background - not black. - This must be a very simple thing to do - just can't get it.
Grazie