New H.265 twice as efficient as H.264!

[lobosrul]

Originally Posted by 5th Of November

If this only needs half the bit rate, then wouldn't it allow 4K enough space to fit on a 50 GB Blu-ray? I realize that the studios would have to quit putting extra stuff on the same disc as the movie, but why wouldn't it work? It would be cheaper for them to put the movie on one disc and any extras on a second disc, than it would for them to start using 100/128 GB BDXL discs. All that would have to be done is making new players that play the codec, just like they did with 3D. The discs can stay the same.

4k has FOUR times (2x horizontal, and 2x vertical pixels) the resolution as 1080, not double. So even if h.265 only needs half the bit rate as h.264 (and I've heard its more like 30% than 50) the disc needs to be twice the size, given the same length of content.