You use it to apply a filter, effect, move to a bunch of clips at one time. But, keep in mind that if you nest a bunch (or is it a gaggle) of clips, then apply a dissolve to the front of that nest, you won’t have that extra footage at the front like you would if it was just a shot. You can adjust that by opening the nest as its own time line (Double click) then extending the front (or back) to have more footage.
Craig Hotti
Pen to Pixels, Inc.
Glendale, CA