LISTEN TO THE WARNINGS!
I just purchases this (VER 4.1.2) and as the other reviews state, IT DOES NOT WORK. I also received the message that I was out of memory. I have a newer imac with 32 Gigs of memory! The program quit respoding after about 5 min. This happened EVERY time I tried to export.
SO LISTEN to the reviews and DO NOT BUY/USE until Apple fixes the issue.
tweakit about
Compressor