Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Paul Anderegg

macrumors member
Original poster
Nov 6, 2019
39
5
My 2019 Macbook Pro is triggering YouTube HDR now...is this related to NASA discovering a parallel universe...what am I missing here, how is this happening? This isn the built in screen, not external monitor.

Screen Shot 2020-05-21 at 2.01.05 AM.png

[automerge]1590052206[/automerge]
Eww, triggers HLG also, but appears broken for that.
Screen Shot 2020-05-21 at 2.05.49 AM.png
 
Last edited:

high3r

macrumors regular
Jul 23, 2015
179
140
Hungary
Nice find but it seems to work only in Chrome. Compared same video in Safari and in Chrome and the HDR version definitely have expanded color gamut and it's overall brighter.
 

sakagura

Suspended
Feb 29, 2020
86
131
My 2019 Macbook Pro is triggering YouTube HDR now...is this related to NASA discovering a parallel universe...what am I missing here, how is this happening? This isn the built in screen, not external monitor.

View attachment 917270
[automerge]1590052206[/automerge]
Eww, triggers HLG also, but appears broken for that. View attachment 917271

Only works in Chrome but only with a HDR display connected. Support is partial on macOS. In both your screenshots the videos aren't displayed correctly. The lime is blown out in the first example and the sky is blown out in the second example.

I tested on a Razer Blade in Edge and Chrome and it was perfect. You can see all the detail in the lime and the sky.
 

Paul Anderegg

macrumors member
Original poster
Nov 6, 2019
39
5
Only works in Chrome but only with a HDR display connected. Support is partial on macOS. In both your screenshots the videos aren't displayed correctly. The lime is blown out in the first example and the sky is blown out in the second example.

I tested on a Razer Blade in Edge and Chrome and it was perfect. You can see all the detail in the lime and the sky.

The screenshot is not indicative of how HDR looks on a monitor, the screenshot is not a display and is nor mapping as viewed. I am attaching a picture I just took of the screen itself, you can see the detail is all there. I don't know how they are doing this, the Chrome team, but it's working and looks really really good, for 500nit at least. The Macbooks can tone map HDR when playing back ST2084 video files in QuickTime, so not sure if the Chrome people figured out a way to use that for the viewport? And form that HLG version, yeah, how you see the svcreengrab above is exacly how it looked on my screen...its indicating receiving ARIB STDB67, but the Macbook screen is obviously showing it as raw RGB values...hence the "eww".

Do you have a 16" Macbook Pro to test this on?

20200522_004750.jpg
 

iMacDragon

macrumors 68020
Oct 18, 2008
2,396
732
UK
Noticed it here this week too, though all the bright things ( skies etc ) seem blown out to me in anything on youtube.
 

Paul Anderegg

macrumors member
Original poster
Nov 6, 2019
39
5
Noticed it here this week too, though all the bright things ( skies etc ) seem blown out to me in anything on youtube.

The 16" Macbook screen wants to be kept 2 steps down from max brightness to not overblow highlights...the gamma has a weird clipping issues if you use the last two steps, where the contrast is maxxed out, especially in HDR.

Paul
 
Last edited:

iMacDragon

macrumors 68020
Oct 18, 2008
2,396
732
UK
My brightness is lower than that already, about 6 steps down when I last checked. Skies in hdr youtube vids still lose almost all detail. Not found many non youtube videos to test in quicktime with for eg. Which I'd like to have same video in something quicktime can play and on youtube, to try and get some idea if it's youtube messing it up or macos..

An example of what I mean, whosing regular SDR version of video and the HDR version, and the complete loss of detail in sky, and infact half a mountain missing on right that is just vanished into the bright highlight. This just doesn't to me at least look 'right', though I'll grant it doesn't look /quite/ as bad as the photo in person, but it's fairly representative.
 

Attachments

  • IMG_7819.jpg
    IMG_7819.jpg
    176.9 KB · Views: 507
Last edited:

Paul Anderegg

macrumors member
Original poster
Nov 6, 2019
39
5
With 500nit peak brightness, 300nit 2 clicks down, your not getting any normal HDR TV highlight roll-off or tone mapping, more of just a simple hard luminance clipping. If you are seeing what you posted in pics, that looks like HLG which isn't compatible right now.

For SDR, 5 clicks down from max brightness is 100nit if you were interested.

Paul
 

Paul Anderegg

macrumors member
Original poster
Nov 6, 2019
39
5
Well, I found the "hidden" menu checkbox for the HDR thing...in display settings, if you hold Option key, you get an Allow extended dynamic range option. If you uncheck that, YouTube HDR (PQ and HLG) plays as REC709 instead of forced HDR.

Paul

Screen Shot 2020-06-05 at 2.21.12 AM.png
 

iMacDragon

macrumors 68020
Oct 18, 2008
2,396
732
UK
For some reason that option doesn't appear for me, all that appears with opt is 'detect displays' button in lower right corner.
 

Paul Anderegg

macrumors member
Original poster
Nov 6, 2019
39
5
For some reason that option doesn't appear for me, all that appears with opt is 'detect displays' button in lower right corner.

Try clicking on some options while holding the Option key...I had to do that, and if I kept holding and clicked default then scaled, I got the refresh rate drop down as well...very clunky menu system Apple!

Paul
 

iMacDragon

macrumors 68020
Oct 18, 2008
2,396
732
UK
Ah.. yeah, clicking around got it to appear.. yeah, that's super clunky and badly designed. I'd go so far as to say, buggy.

Though still doesn't solve why with EDR enabled it seems to be acting more like a HDR mastering display ( just clipping everything that should be I presume above 500 nit request to max and leaving everything below untouched, rather than tone mapping to compensate for range. )

At least, I presume that's how it's acting for me.

Edit: Though no, it's definitely doing something, with top 3 brightness notches, the amount of blowout increases, below that, everything gets dimmer including the blowout/clipping. Still leaves a rather undesirable amount of clipping making video look worse than sdr version overall if there's any clipped area with detail..
 
Last edited:

maxsquared

macrumors 6502a
Jun 27, 2009
626
446
London
Sorry for pull out this thread again, I've managed to get HDR playing, but how can you get no dropped frames? Mine dropped like crazy, it's almost unwatchable. 5500m seems to be worse.
 

Grohowiak

macrumors 6502a
Nov 14, 2012
768
793
Sorry for pull out this thread again, I've managed to get HDR playing, but how can you get no dropped frames? Mine dropped like crazy, it's almost unwatchable. 5500m seems to be worse.

Do you have external screen attached or slower internet connection or something?
I just watched a HDR video on YT, full screen on a 5300 without a single hiccup.
 
  • Like
Reactions: maxsquared

maxsquared

macrumors 6502a
Jun 27, 2009
626
446
London
Ye, I have an external HDR display, will it matter?

I've tried without the display and it still drop frames, what resolution did you play the video of? Mine ran 4k
 

iMacDragon

macrumors 68020
Oct 18, 2008
2,396
732
UK
Youtube/VP9 decoding is done entirely in software at least until such a time as apple gives hardware support.
 

Take Wata

macrumors newbie
Jul 10, 2020
4
0
London
It was possible to see HDR video on YouTube with the built-in display of my MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports) until the end of June.
However, I cannot see the videos with bt2020 via Chrome anymore from this month although I check the hidden setting above.

Is this a problem happens only to me? I can still see HDR10 video on Netflix premium via Safari, by the way.
Let me know which setting I am supposed to check next...

HDR is not available on YouTube at all viewing from my laptop now.
HDRproblemm.png


*Here is an example of HDR video, which I had coincidently taken a screenshot.
 
Last edited:

maxsquared

macrumors 6502a
Jun 27, 2009
626
446
London
It seems they removed HDR for 1080p option. 1080p above it seems still there, try costa rica and set resolutions to above 1080p and see if the option is there for you, mine still works above 1080p
 

Take Wata

macrumors newbie
Jul 10, 2020
4
0
London
It seems they removed HDR for 1080p option. 1080p above it seems still there, try costa rica and set resolutions to above 1080p and see if the option is there for you, mine still works above 1080p

Thank you for your advice. However, I can't see HDR on Costa Rica, either.
Can you still see HDR model on this video?

None of the HDR is available on YouTube from the built-in display of my laptop. Does it require any other setting now?
 
Last edited:

maxsquared

macrumors 6502a
Jun 27, 2009
626
446
London
Thank you for your advice. However, I can't see HDR on Costa Rica, either.
Can you still see HDR model on this video?

None of the HDR is available on YouTube from the built-in display of my laptop. Does it require any other setting now?

Ye Costa Rica still works for me
 

DeviantTofu

macrumors newbie
Mar 1, 2017
3
0
So HDR on youtube was working on my macbook pro 13'' a while back. But it stopped working. I thought I messed up some settings. But it seems it may be on the youtube end. Anybody else seeing it (used to work but not anymore)?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.