AMD Teases RDNA 2 "Hangar 21" Raytracing Tech Demo

[redeye]

lol. now if we could just get the card so we could see the demo... lol

 

[Valantar]

Supposedly. Extremely slowly. They haven't adapted their own VP9, which is roughly on the par with x265. So far, dedicated channels.

But I hope they will - though there is still a problem with regular people uploads from home - AV1 can't achieve reliable real-time compression, at least on all hardware. Hope this will change...

Is there hardware out there with hardware VP9 decoding, though? There's no benefit for them in rolling out a new codec - which would include re-encoding their entire library, a massive investment in both power, storage and compute hardware - unless they can actually make use of it. So adoption takes time, sadly.

 

[Mouth of Sauron]

Is there hardware out there with hardware VP9 decoding, though? There's no benefit for them in rolling out a new codec - which would include re-encoding their entire library, a massive investment in both power, storage and compute hardware - unless they can actually make use of it. So adoption takes time, sadly.

Most of YouTube stuff is in 'what's done is done' state - all those webcams, mobile phones... Everything in x264, and re-encoding would only hurt quality more. Uploaded videos need to be of better quality - and it's either hw-encoding fast enough to capture it at source, or uncompressed videos encoded with more advanced coded - this is how most of VP9/x265 and AV1 stuff currently available was done.

That's what I meant, content uploaded by real people - this particular video is, in fact encoded by AV1. "Stuff like that" was meant for all those comparison videos done by home users...

 

[Valantar]

Most of YouTube stuff is in 'what's done is done' state - all those webcams, mobile phones... Everything in x264, and re-encoding would only hurt quality more. Uploaded videos need to be of better quality - and it's either hw-encoding fast enough to capture it at source, or uncompressed videos encoded with more advanced coded - this is how most of VP9/x265 and AV1 stuff currently available was done.

That's what I meant, content uploaded by real people - this particular video is, in fact encoded by AV1. "Stuff like that" was meant for all those comparison videos done by home users...

Sorry, but YT - as with all video hosting platforms - re-encodes everything that's uploaded. If they didn't you'd have to manually upload every available resolution of a video, which ... well, you don't. They unify their library in terms of encoding to ensure it all works as it should, and they already changed codecs once (to whatever it is they're using today, can't remember), though since then there's probably been uploaded a few petabytes worth of video. Still, when the time is right to move to a new codec, when devices are out there with decoding capabilities enough to allow YT to save significantly on bandwidth and HDD power, they'll move.

 

[Mouth of Sauron]

Sorry, but YT - as with all video hosting platforms - re-encodes everything that's uploaded. If they didn't you'd have to manually upload every available resolution of a video, which ... well, you don't. They unify their library in terms of encoding to ensure it all works as it should, and they already changed codecs once (to whatever it is they're using today, can't remember), though since then there's probably been uploaded a few petabytes worth of video. Still, when the time is right to move to a new codec, when devices are out there with decoding capabilities enough to allow YT to save significantly on bandwidth and HDD power, they'll move.

What you say is true - it does happen. Most of the stuff is displayed as VP9 (though there are some AV1, too). Thing is if I record a clip at 720p at home, it's (probably) x264, then I upload that single resolution to YT, then they decode it and recode in several other resolutions. Thing is, I've done the most damage by initial encoding, and subsequential recoding by YouTube worsens it further.

It's actually fun what are some AV1 files I've found - coming from people who, well, don't look at all like technology savvy ones, while hardware reviewers are mostly on VP9 - must be some internal stuff connected with number of views and stuff like that.