Do the codecs of the two clips match?
Yes. They do. But when they render out of AE, they change from pixel aspect square to pixel aspect NTSC -CCIR
I did not think that "square pixels" were part of the DV "protocol" in PALor NTSC
Do you need them for a special reason?
Yes, I've been advised that 640 X 480 deinterlaced 422HQ Sq. is the best format for me to project from my laptop at a special screening. It really looks beautiful.
But that's not my question.
I'm asking why Compressor will give me that format and that apparently AE won't.
I'm using the a clip from the CORRECTLY formatted footage. I bring it into AE in order to add an effect. But when I render it out at CURRENT SETTINGS I get NTSC - CCIR not square.
Question, how can I add an effect in AE without destroying the existing formatting of my clip?
Okay, Comp settings must be a square codec. That'll change the dimensions of the frame but not the original clip. So it'll render out with black all around it, but when I bring into FCP and blow it up to 100% it's the right size (and the ridght CODEC)
Right. Figured it out finally late last night. worked out exactly as you said. Bigger with all that black space but works perfectly in FCP sequence at 100%. Fills frame correctly.