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Cobretti2 said:

Well depends how they encode the video i guess if they use H265 there is no valid reason as to why a movie should be over 50gb lol. Anything larger is just being lazy at encoding.

So in theory a firmware upgrade could potentially play dual layer discs.

Unless there is some sort of mechanical restriction when reading dual layer UHD discs.

Makes sense for 3-4 layer discs for this not to work.

The PS4.... hell even the PS3 is alresdy able to play dual layer discs. The issue is the triple or quad layer discs that make up the BDXL standard. 

And HEVC encoding while better doesn't make a dramatic difference in size when ur already talking UHD video content. 

As I said before, a UHD movie on a disc (this means no funny compression stuff as u see in pirate copies of movies) can be anywhere from 35GB -80GB+. the whole point of having standards is that any and every player on the planet that says it's a UHD player will be able to play UHD movies. 

Sony can't just patch in support for HEVC codec and HDMI 2.0 video compliance and then just sit and hope that no one makes a movie that ships on a disc larger than 50GB, when in truth probably every single IHD movie will ship on a BDXL disc of some sort which means at least 75GB even if they don't use up all that capacity.