I think I answered my own question. I’m cutting on a DVCProHD timeline at 23.98fps. I had a couple of scenes that I needed to make masks and then retouch a few background elements. That PSD would then be used over the original footage since it was a locked-down shot. I just exported a frame from the original footage as a reference at 1280×1080, did the retouching in Photoshop and exported the mask/retouched background back into FCP at the same frame size. When imported, everything matched over the original footage up without any problems. It was just a small fix so you can’t really see that there is no compression noise in the graphic when placed over the original footage. (Someone left a water bottle in the background and it wasn’t caught during the shoot.) OOPS!
Usually I cut in 10 bit uncompressed from the original HDCam footage. This project, due to client request, was cut in the DVCProHD codec so I had to develop a different workflow from the one I usually use. Since this spot was going to be distributed in SD anyway, going to DVCHD wasn’t that big of an issue. The client was happy to not be advertising that brand of water along with his product and DP will be getting a LARGER field monitor next time.
As a side note, how the times have changed. Being concerned about dropping DOWN to a format like DVCHD and being worried about if the final product will look good enough on the air. (It does BTW) 🙂
Tom