Hi,

I can vouch for the importance of these settings - I exported some files from Final Cut Pro inadvertently with one of the HD presets selected and the results were bizzare.

The material in the video file was shrunk to a small size and appeared in the top left corner of the image, the rest of the frame was filled with a random colour. I traced the trouble to the AIC export settings, but thought I'd mention it here in case anyone else is troubleshooting weird shrinking movies, or unwanted psychadelic colours...

Best

Tim