I have a file, 1080 30P in qiucktime (.mov) format. When I try to convert it to Cineform using Prospect HD it says format not supported. Am I doing something wrong?
2nd ? - Blu-ray and DVD only support 24p and interlaced video. Any way to convert 30P to an interlaced format cleanly?

Does that MOV play in QuickTime player? If it does send it to support, as it should work.

30p plays as 60i without conversion -- no issue, it just looks like 30p (other than subtle resolution loss inherent to 60i.)

It's 50GB! Yes it plays in Quicktime player and windows media player. I tried the re-wrapping mov to avi and that works. I attached a file of what I get when I try to convert.