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macOS 11 Big Sur Safari YouTube 4K HDR VP9 support

EugW

macrumors G3
Original poster
Jun 18, 2017
9,164
6,556
Trip report for Big Sur Beta 6:

They took it away!

8K vids that played before now back to a maximum of 1080p60. Oh well.

8K vids only playing with avc1 codec. Looks like they yanked VP9 support.
I can confirm this, VP9 support is gone.
Bah. :mad:

I guess I won't bother installing this iteration of Big Sur beta then.
 
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iMacDragon

macrumors 68000
Oct 18, 2008
1,940
375
UK
Trip report for Big Sur Beta 6:

They took it away!

8K vids that played before now back to a maximum of 1080p60. Oh well.

8K vids only playing with avc1 codec. Looks like they yanked VP9 support.

Check again, I think however the support is working it seems to break on youtube every beta for some hours before google updates something to allow it again. I at least still get 4k hdr vp9 support at moment of checking.
 
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Earl Urley

macrumors 6502a
Nov 10, 2014
513
218
I'll wait until tomorrow to do further testing. I just noticed that some Safari settings got reset during the Beta 5 to Beta 6 update. Had to disable content blockers and allow all auto play; as of five minutes ago the same batch of 8K videos that worked before still refuse to play VP9, sticking to AVC1. Do you have a link to one of those that's playing VP9 in 4K?
 
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iMacDragon

macrumors 68000
Oct 18, 2008
1,940
375
UK
Good old costa rica for example:
 

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iMacDragon

macrumors 68000
Oct 18, 2008
1,940
375
UK
Not sure I like the new safari preferences dialog tabs either, a bit too toned down ( also buggy selection box ), content blocking still working here also, and autoplay setting did not reset.
 
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CMMChris

macrumors 6502
Oct 28, 2019
278
213
Looks like it only got disabled for Macs that use Quick Sync?! On the Hackintosh with Radeon VII running as iMacPro1,1 it's working as well.
 
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Superhai

macrumors 6502a
Apr 21, 2010
622
426
I guess they have set some hardcoded limits of what is required for playback. So some will have playback and some not.
 
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Superhai

macrumors 6502a
Apr 21, 2010
622
426
Looks like it only got disabled for Macs that use Quick Sync?! On the Hackintosh with Radeon VII running as iMacPro1,1 it's working as well.
Could be they want feedback on AMD drivers and thus disabled on Intel.
 
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CMMChris

macrumors 6502
Oct 28, 2019
278
213
Makes no sense. Why would they implement Broadwell and Haswell VP9 acceleration just to disable it again?
 
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CMMChris

macrumors 6502
Oct 28, 2019
278
213
Nope, heat is reasonable and so is CPU usage. And again, would make no sense. They would know about issues in advance.
Also ot got disabled for more modern Macs as well.
 
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Earl Urley

macrumors 6502a
Nov 10, 2014
513
218
Yeah on my Late 2013 rMBP running Big Sur, it looked like the VP9 decoding was 90-99% offloaded to the Intel Iris 5100 GPU, which was quite surprising.

Looks like Apple doesn't want to throw any possible bones to longtime faithful users- you want hardware accelerated 8K video, buy a 2016 or newer machine, even if it's possible to give it to older ones.
 
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ArPe

macrumors 6502a
May 31, 2020
507
935
8K has been toggled off on Google’s side. Probably they detect your machine type and disable it because nobody has an 8K display and you consume more energy for nothing.

4K HDR YouTube seems a little less efficient than two builds ago. The MBP gets noisy quickly. The video scrubbing and resizing to full screen also becomes jerky for a few seconds before resuming normally.

In general the graphics drivers took a dive in the last two builds. There is a noticeable loss in performance in some games.
 
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ArPe

macrumors 6502a
May 31, 2020
507
935
I don't have 8k display, not even 4K but can play 8/4k videos.

Which machine have you got? It’s really confusing to follow this thread without everyone posting a quick spec when they confirm they have a feature enabled.

Edit: I have 8K on one of the videos above but not on all the videos.

Los Lagos is working on the MBP18 on the iGPU but it is very jerky on the Radeon 560X.
 
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startergo

macrumors 68030
Sep 20, 2018
2,710
1,148
Which machine have you got? It’s really confusing to follow this thread without everyone posting a quick spec when they confirm they have a feature enabled.

Edit: I have 8K on one of the videos above but not on all the videos.

Los Lagos is working on the MBP18 on the iGPU but it is very jerky on the Radeon 560X.
It is in my signature.
 
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ArPe

macrumors 6502a
May 31, 2020
507
935
Who said it is working in iOS?

Signatures on this forum. They don’t appear on Safari for iOS, which is what I’m using to read and post here.

On macOS side, I haven’t logged on to any websites in Safari for Big Sur yet and this forum’s signatures are only visible if we log in to the desktop site. I haven’t imported my keychain into Big Sur at all yet.
 
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Earl Urley

macrumors 6502a
Nov 10, 2014
513
218
8K has been toggled off on Google’s side. Probably they detect your machine type and disable it because nobody has an 8K display and you consume more energy for nothing.

How do you explain that startergo still has access to 8K?

I'd be more inclined to believe that they'd disable 8K because it puts a strain on their servers to transmit that much video on a widespread basis over identifying a platform as incapable of that kind of playback.

4K HDR YouTube seems a little less efficient than two builds ago. The MBP gets noisy quickly. The video scrubbing and resizing to full screen also becomes jerky for a few seconds before resuming normally.

In general the graphics drivers took a dive in the last two builds. There is a noticeable loss in performance in some games.

Are you referring to all graphics drivers under Big Sur, or just Intel iGPU, or AMD's drivers?
 
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ArPe

macrumors 6502a
May 31, 2020
507
935
How do you explain that startergo still has access to 8K?

I added an ‘edit’ to that post above saying that 8K is working but not on all videos.


Are you referring to all graphics drivers under Big Sur, or just Intel iGPU, or AMD's drivers?

For the 8K video (when the option appears) it’s smooth on Coffee Lake iGPU and badly jerky on the Radeon dGPU.

Gaming wise, for each beta I have been testing most of the same benchmarks that Barefeats uses. The last two betas are significantly slower than the first betas on dGPU and eGPU. GFXBench Metal went from 200fps down to 128fps on eGPU.
 
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