Some effects, like fade, work around the need for alpha channels while other effects, like chromakey, require an alpha channel in order to be functional.
So in order to get faster results, it is always a good idea to try the effect without alpha channels to see if it works before settling on an alpha channel and slowing it down.
Some effects, like fade, work around the need for alpha channels while other effects, like chromakey, require an alpha channel in order to be functional.
So in order to get faster results, it is always a good idea to try the effect without alpha channels to see if it works before settling on an alpha channel and slowing it down.