Squared 5 info:
The above is free and can do a lot of video transcoding.
"Progressive footage do you mean 1080p? "
Yes that's correct.
Interlaced means 2 fields of video working together to display one frame.
The TV/Monitor scans lines 1,3,5,7,9 and so on for the first field then 2,4,6,8 for the next to create the frame.
Progressive displays one frame without this interlacing.
At 1080 you must use Interlaced eg. 1920 x 1080i.
Quicktime itself is like a container that holds stuff, think of a tin can and you decide what to put in there.
Quicktime holds lots of differing types of CoDecs (Compression/Decompression).
Codecs conform to exact standards and FCE understands some of them.
That's why whatever you use or transcode a file to, must conform to an FCE Easy Setup so it works seamlessly.