ALPHA CHANNEL
>> The BEST method of doing this is with an A/B/C roll system, A is the live
video background, B is the animation, and C is the alpha channel. <<
Sorry but this is incorrect. The best way is to digitally composite your
animations with a 4:4:4:4 system like Digital F/X. The next best solution with
a typical A/B/C roll system is the technique I suggested.
Just to keep the facts straight. <g>
-JE