foxyshadis
4th May 2013, 03:33
Using PSNR (well it's not like they developed for anything else) as a measurement, HEVC barely changed its quality per bit since early 2012. Since mid-late 2011, it might have increased bd-rate by roughly 5-10%.
HEVC tools were actually finalized based on subjective viewing, not PSNR. Most of the work since early 2012 has been nailing down the bitstream and bugs, rather than releasing an incomplete or vague spec, like the VP* series, but room for optimization is massive, once other projects start marrying their H.264 mode decision and optimization algos with the new HEVC spec. VP9 is probably a full generation behind, like VP8 was compared to H.264.
HEVC tools were actually finalized based on subjective viewing, not PSNR. Most of the work since early 2012 has been nailing down the bitstream and bugs, rather than releasing an incomplete or vague spec, like the VP* series, but room for optimization is massive, once other projects start marrying their H.264 mode decision and optimization algos with the new HEVC spec. VP9 is probably a full generation behind, like VP8 was compared to H.264.