My Quicktime won't play an HD .mov file
My editor sent me a project of mine as a web compressed file, a standard def file and as an HD file. The first two play just fine but for some reason, the HD files doesn't play at all. even though it ends in .MOV like the first two, a window pops up that says I may need to install additional software.
Why is that and what do I need in order to play a "different" kind of .MOV file. I am told that the file is prores.
Thanks.
IMAC 1.9GHZ G5, Mac OS X (10.4.9)