4k video Chrome high CPU

[lolmbp2011]

https://imgur.com/a/l23QFtl

Does anyone know what causes this issue?
I have tried a couple solutions I found like disabling plug-ins to no avail.
MBP 2018 2.6ghz 16gb

 

[geek1]

4K decoding is quite expensive so it is not surprising. I see the same issue on my 2014 MBP i7.

 

[Adeel_]

Can you try with another web browser maybe?

 

[livewhereveryouwant]

Can you try with another web browser maybe?

I realized the same problem today, but 4K decoding should not be expensive, the new Macbook Pro are meant to create 4K content!

with 6th and 7th generation of Intel CPU, there is hardware decode AND ENCODE! Even if Google Chrome uses VP9, from the table below in Wiki Link, it's already supported.

https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video

You can't try this in Safari because 4K playback in youtube is disabled in Safari.

Anyway, I notice that the dGPU was kicked in during the 4k playback (check by energy impact in activity monitor)

 

[lolmbp2011]

Can you try with another web browser maybe?

Safari doesn't support youtube 4k. 4k on Vimeo.com through Safari uses ~5-20% CPU. Problem is only Chrome and youtube.

I realized the same problem today, but 4K decoding should not be expensive, the new Macbook Pro are meant to create 4K content!

with 6th and 7th generation of Intel CPU, there is hardware decode AND ENCODE! Even if Google Chrome uses VP9, from the table below in Wiki Link, it's already supported.

https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video

You can't try this in Safari because 4K playback in youtube is disabled in Safari.

Anyway, I notice that the dGPU was kicked in during the 4k playback (check by energy impact in activity monitor)

dGPU is always on as its connected to 4k monitor.

 

[M.Rizk]

I realized the same problem today, but 4K decoding should not be expensive, the new Macbook Pro are meant to create 4K content!

with 6th and 7th generation of Intel CPU, there is hardware decode AND ENCODE! Even if Google Chrome uses VP9, from the table below in Wiki Link, it's already supported.

https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video

You can't try this in Safari because 4K playback in youtube is disabled in Safari.

Anyway, I notice that the dGPU was kicked in during the 4k playback (check by energy impact in activity monitor)

The dGPU kicked in because Chrome has Hardware Acceleration enabled. Try to disable it and check if it makes any difference.

 

[livewhereveryouwant]

any one knows if..

Chrome on Mac allow the use of Intel hardware VP9 decode, coz thats what the video Codec being used in Chrome for 4K

 

[Marketh]

On this - Does anyone know if/when Safari will support 4k playback on YouTube etc?

 

[iMacDragon]

Apple does not support hardware acceleration for anything but h264/5, so chrome's insistance on VP9 means full software decode, and thus heavy cpu usage.

The hardware supports it, but apple do not expose VP9 decode to software.
[doublepost=1533303208][/doublepost]

On this - Does anyone know if/when Safari will support 4k playback on YouTube etc?

It won't anytime soon, because Apple won't support VP9 and google won't support 4k h265.

 

[Fishrrman]

I'd suggest a DIFFERENT browser, something other than Chrome.