Quote:
Originally Posted by ksec
That is what I have been thinking about for quite some time as well. Law of diminishing returns.
What I really want to see is ML and Post Processing / LC on top of VVC or AV1. Especially with LC VVC. Could we squeeze another 20-30% bitrate reduction on leading edge codec?
|
This is exactly the approach
MPAI is taking, albeit on top of EVC Baseline. But the concepts and approaches they develop there should be more broadly applicable.
As for the diminishing returns of block-based encoding, people have been predicting that for decades, but we're continuing to see 50% bitrate reductions in PSNR each decade, with even bigger psychovisual gains. We can do 4K HDR at a lower ABR than for SD MPEG-2 on DVD!
Maybe we'll hit a wall where some a new fundamental approach will be needed, but probably not for a while. There's
lots of block-based enhancements proposed that aren't included in VVC or AV1.
Over the next decades, I can imagine a ML-powered fusion of block based encoding and GPU/VR-style rendering with texture mapping. So object detection and extraction for things that can be synthesized more efficiently than 2D rendered.