There is no setting for uncompressed avi in premiere pro? I checked on the Adobe help site and this
is what I found. The very last one on the list says,
Adobe Help wrote:Microsoft Uncompressed AVI (AVI; Windows only): is used for high-definition video output.
Sounds to me like there should be an uncompressed default somewhere.
If there really isn't anything like that, then give a compressed avi a try. Does it say that it is going to make your footage SD? Cause when I converted some HD videos (mp4s) to a compressed avi in Sony Vegas, it defaultly made it the same size as the source. I'm not sure what Adobe Premiere as I only ever use Sony Vegas.
I just watched a tutorial where a guy was exporting from Adobe Premiere CS4 and he had the Uncompressed Microsoft Avi option.