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

[Richard Paul]

Originally Posted by Teazle

I might change my mind if Expendables 3 theatrical looks good at only 138gb (says Penton). And that's presumably 4:4:4 chroma res & in some fat color space. Idk how they squish it so small.

There is a huge difference between JPEG2000 and HEVC in how they encode video. JPEG2000 is intra only compression so each picture is encoded separately. Intra only compression has the advantages of greater error tolerance (since errors only affect that frame) and easier editing but it has the huge disadvantage of requiring a bit rate at least 10 times higher than inter frame compression (which predicts information between frames). For professional video the huge bit rate increase is considered acceptable but it would not tell us what bit rate would be needed for 4K UHDTV since that will use inter frame compression.