"Set for a year-end release, AV2 is not only an upgrade to the widely adopted AV1 but also a foundational piece of AOMedia’s future tech stack.
AV2, a generation leap in open video coding and the answer to the world’s growing streaming demands, delivers significantly better compression performance than AV1. AV2 provides enhanced support for AR/VR applications, split-screen delivery of multiple programs, improved handling of screen content, and an ability to operate over a wider visual quality range. AV2 marks a milestone on the path to an open, innovative future of media experiences."
Another codec, that will take a decade to get widespread adoption and hardware compatability. /sigh
And which will be so resource intensive to encode with compared to existing standards that it’ll probably take 14 years before home media collectors (or yar har types) are able and willing to use it over HEVC and AV1. :\
As an example AV1 encodes to this day are extremely rare in the p2p scene. Most groups still work with h264 or h265 even those focusing specifically on reducing sizes while maintaining quality. By contrast HEVC had significant uptake within 3-4 years of its release in the p2p scene (we’re on year 7 for AV1).
These greedy, race to the bottom device-makers are still fighting AV1. With people keeping devices longer and not upgrading as much as well as tons of people relying on under-powered smart-TVs for watching (forcing streaming services to maintain older codecs like h264/h265 to keep those customers) means it’s going to take a depressingly long time to be anything but a web streaming phenomenon I fear.
To be fair, it’s also basically impossible to have extremely high quality AV1 video, which is what a lot of P2P groups strive for. A lot of effort has gone into trying to do so and results weren’t good enough compared to x264, so it’s been ignored. AV1 is great at compression efficiency, but it can’t make fully transparent encodes (i.e., indistinguishable from the source). It might be different with AV2, though again even if it’s possible it may be ignored because of compatibility instead; groups still use DTS-HD MA over the objectively superior FLAC codec for surround sound because of hardware compatibility to this day. (1.0/2.0 channels they use FLAC because players support that usually)
As for HEVC/x265, it too is not as good as x264 at very high quality encoding, so it’s also ignored when possible. Basically the breakdown is that 4k encoding uses x265 in order to store HDR and because the big block efficiency of x265 is good enough to compress further than the source material. x264 wouldn’t be used for 4k encoding even if it could store HDR because its compression efficiency is so bad at higher resolutions that to have any sort of quality encode it would end up bigger than the source material. Many people don’t even bother with 4k x265 encodes and just collect the full disc/remuxes instead, because they dislike x265’s encoder quality and don’t deem the size efficiency worth its picture quality impact (pretty picky people here, and I’m not really in that camp).
For 1080p, x265 is only used when you want to have HDR in a 1080p package, because again x265’s picture quality can’t match x264, but most people deem HDR a bigger advantage. x264 is still the tool of choice for non-HDR 1080p encodes, and that’s not a culture thing, that’s just a quality thing. When you get down into public P2P or random encoding groups it’s anything goes, and x265 1080p encodes get a lot more common because x265 efficiency is pretty great compared to x264, but the very top-end quality just can’t match x264 in the hands of an experienced encoder, so those encoding groups only use x265 when they have to.
Edit: All that to say, we can’t entirely blame old-head culture or hardware compatibility for the unpopularity of newer formats. I think the home media collector usecase is actually a complete outlier in terms of what these formats are actually being developed for. WEB-DL content favors HEVC and AV1 because it’s very efficient and displays a “good enough” quality picture for their viewers. Physical Blu-Rays don’t have to worry about HDD space or bandwidth and just pump the bitrate insane on HEVC so that the picture quality looks great. For the record, VVC/x266 is already on the shortlist for being junk for the usecases described above (x266 is too new to fully judge), so I wouldn’t hold my breath for AV2 either. If you’re okay with non-transparency, I’d just stick with HEVC WEB-DLs or try to find good encoding groups that target a more opinionated quality:size ratio (some do actually use AV1!). Rules of thumb for WEB-DL quality are here, though it will always vary on a title-by-title basis.
Well yeah given who makes it but it’s what I care about. I couldn’t care less about obscure and academic efforts (or the profits of some evil tech companies) except as vague curiosities. HEVC wasn’t designed with people like me in mind either yet it means I can have oh 30% more stuff for the same space usage and the enccoders are mature enough that the difference in encode time between it and AVC is negligible on a decently powered server.
Transparency (or great visual fidelity period) also isn’t likely the top concern here because development is driven by companies that want to save money on bandwidth and perhaps on CDN storage.
Which I think is a shame. Lower bitrates for transparency -should- be the goal. The goal should be to get streaming content to consumers at a very high quality, ideally close to or equivalent to UHD BluRay for 4k. Instead we get companies that bit-starve and hop onto these new encoders because they can use fewer bits as long as they use plenty of tricks to maintain a certain baseline of perceptual visual image quality that passes the sniff test for your average viewer so instead of getting quality bumps we just get them using less bits and passing the savings onto themselves with little meaningful upgrade in visual fidelity for the viewer. Which is why it’s hard to care at all really about a lot of this stuff if it doesn’t benefit the user in any way really.