I am not particularly knowledgeable in this area but I do know that a common issue with videos is the .MOV
format is a container
that incorporates a variety of different codecs
. It may be your BlueRay player simply does not recognize the .MOV format or it may not have the proper codec for the files you downloaded. (NOTE:
because the .MOV format is an Apple proprietary format, the .MP4 format is generally more universally compatible.)
As to how long it is taking (hopefully by now that is "took") video image rendering is notorious for eating CPU cycles. You have a high resolution file with a lot of data and rendering it from one codec and format to another takes a huge number of CPU cycles. Had you looked at Activity Monitor during that process I suspect you would have found the processor(s) in your CPU were pretty well maxed out and quite likely there would have been a lot of swap file activity going on as well.