4 ms·
... improvements around 25% compared to AV1 AV2 decoding is roughly five times more complex than AV1 decoding I'm not sure what these two lines mean or if w
by Slurpee99 5mo ago
... improvements around 25% compared to AV1
AV2 decoding is roughly five times more complex than AV1 decoding
I'm not sure what these two lines mean or if we can compare them, any help?
- croes 5mo agoSmaller files but harder to decode
- jbk 5mo ago> I'm not sure what these two lines mean or if we can compare them, any help? AV2 saves 25% bandwidth at the cost of 5x more decoding complexity.
- 0x1ceb00da 5mo agoWhat does "complexity" mean here? Computation required?
- simjnd 5mo agoYes
- BillStrong 5mo agoYes, much higher computation required to encode it, and decode it, both.
- Caspy7 5mo agoHe only mentioned decode complexity. Would be interesting to know the average encode complexity compared to AV1.
- kiicia 5mo agoEncoding speed even on Mac Studio is atrocious, it’s in range of single frames per second as opposed to realtime+ for even h265
- F3nd0 5mo agoThe specification for AV2 has only been finalised very recently, so performant encoders have not yet been developed. Meaningful comparison to older codecs like H265 and AV1 will only be possible once that has changed. (It'll be slower, but almost certainly not one-frame-per-second slow.)
- Dylan16807 5mo agoGetting the full bitrate gains will be slower. For any specific bitrate and quality target, there's a good chance it'll be faster.
- WD-42 5mo agodav1d is the av1 decoder and it’s an insane feat of engineering. Written in assembly, it even eschews the normal c calling convention to get even better performance.
- IshKebab 5mo agoThe normal C calling convention is really only for cross-binary calls (e.g. between shared libraries). If you're not doing that you can ignore it; it's not a weird thing to do. It would be odd to strictly follow it in assembly and I assume compilers don't either.
- adgjlsfhk1 5mo agoUnfortunately, in absence of inlining, compilers mostly respect calling convention even when they don't have to.
- whynotmaybe 5mo agoI understood it as compression is 25% better : a quality of 10mbps in av1 can be achieved with 8mbps in Av2. But, it needs 5 times more compute power for this 25% gain.
- deleted 5mo ago[deleted]