YouTube Video playing at 2160P/4320P on 5K iMac running 10.15 PB1

[Realityck]

Utilizing 10.15 PB1 - With safari 13.0 you can watch Bulgaria 8K HDR 60 (FUHD) only as 1080P60 where as if you use latest Firefox 67.04 it will allow the same video to run at 8K resolution. Is this something new?

Reference

 

[Ritsuka]

YouTube encodes 4k and 8k video only in Google's VP9 codec. Safari doesn't support it.

 

[vaugha]

Ya I don't know why apple refuses to implement vp9 on safari. 4k and 8k are the future of videos so they need to support it if they want to continue to compete.

 

[idck_cn]

That really helps carrier data business. Especially upcoming 5G network madness speed.
I've run same show on MBP 15. DB5. 1080p for ages. How to play like 5K iMac on Safari?

 

[dan9700]

Use chrome it’s so dumb Apple safari can’t play it and also it can’t live stream safari needs to catch up with chrome

 

[CWallace]

YouTube is already moving from VP9 to AV1, which Apple will support (they are part of the consortium). Netflix and Twitch will also support AV1. So soon enough Safari should be able to handle UHD content natively.

 

[ErikGrim]

YouTube is already moving from VP9 to AV1, which Apple will support (they are part of the consortium). Netflix and Twitch will also support AV1. So soon enough Safari should be able to handle UHD content natively.

Praise the lawd! Google's buttheadedness with VP9 was aggravating to no end.

 

[PastaPrimav]

Use chrome it’s so dumb Apple safari can’t play it and also it can’t live stream safari needs to catch up with chrome

Lol no. Not even close.

 

[ErikGrim]

The question is whether Apple will support AV1 at all despite being a founding member of the Open Video Alliance.

 

[CWallace]

The question is whether Apple will support AV1 at all despite being a founding member of the Open Video Alliance.

It will be the default open standard for the largest content creators so it's not like Apple has a choice whether or not to support it - hence why they joined at the highest membership tier ("Founder"). AV1 will also allow Apple to serve video content to platforms other than macOS and iOS which will be important for Apple TV+.

 

[frou]

Presumably all currently existing Macs and iOS devices won't be capable of hardware-accelerated AV1 decoding so it's not that much of a clear win.

 

[CWallace]

Presumably all currently existing Macs and iOS devices won't be capable of hardware-accelerated AV1 decoding so it's not that much of a clear win.

Since it is meant to become the "One Standard", I would imagine it is designed to leverage existing hardware for performance since major adopters like YouTube and Netflix will not want a poor user experience for customers on older equipment.

Wiki says it is based on HTML 5 Video, so current .h264 and .h265 hardware accelerators might be able to work with AV1 to various degrees.

That being said, I expect that future A-Series and T-Series chips will support dedicated AV1 decoding...

 

[jerwin]

https://www.youtube.com/testtube

says

More video for less data
The AV1 video codec provides advanced compression, bringing you smoother streaming in HD and data savings for more video on the go.
Because it is new, streaming AV1 in HD requires a powerful computer, and only some videos have AV1 available at this time. Choosing to stream AV1 in SD will use AV1 up to 480p, and VP9 for higher formats.

Now, this may because I'm running an rapidly obsolescing Haswell, but this sounds like a scheme to trade lower bandwidth for higher CPU utilization and, consequently, lower battery life. An ASIC could solve this, eventually, but it will mean replacing ones devices.

 

[Ritsuka]

Since it is meant to become the "One Standard", I would imagine it is designed to leverage existing hardware for performance since major adopters like YouTube and Netflix will not want a poor user experience for customers on older equipment.

Wiki says it is based on HTML 5 Video, so current .h264 and .h265 hardware accelerators might be able to work with AV1 to various degrees.

That being said, I expect that future A-Series and T-Series chips will support dedicated AV1 decoding...

No, you will need a new hardware to decode/encode AV1 and avoid doing it on the CPU. Anyway, it will take years to see if AV1 will actually stick around or fail.