suggestion? Spend as much energy researching the problem as you did typing this post! 🙂
YouTube won’t accept a “Quicktime Movie” as you call it, likely because it is a ProRes movie. YouTube is only going to accept common video formats. The “Quicktime Movie” is a container…more importantly is the “codec” which if you open quicktime and press CMD+I will tell you what it is.
.MOV files can contain hundreds of codecs…saying “Quicktime Movie” is like me saying I drive an automobile. It’s too generic.
Hope that helps give you some direction.
-Jason