Originally Posted by jagabo
If discs come out that are compatible with older players it will be because they include a 1080p video as well as the 4K video
I think that was what I was trying to get at with this statement:

Edit - maybe they could have a 1080p "core" like they do for dtsma and dolby truehd?

What about those high capacity bluray discs? Is that would they would be using for 4k bluray? I forgot what they are called but I read about those in some of the bluray burning threads. It would take more than a 50gb bluray disc for 4k even if it used different compression technologies right?