1080p H.264 can just now be played back on modern processors without hardware acceleration. I shutter to think about playing back 2160p H.265 before anyone buil

1080p H.264 can just now be played back on modern processors without hardware acceleration. I shutter to think about playing back 2160p H.265 before anyone builds hardware support. I'm sure you don't get "twice as efficient" without making it about twice as difficult to decode. Or maybe 4 times...