2045108 - YouTube HDR video unavailable

Status: RESOLVED FIXED

(Core :: Graphics, defect, P3)

Description

[tritchie]

Attachment: about:support June 4th HDR nightly

Running nightly: 153.0a1 (2026-06-04) (64-bit)
This machine has a nvidia 3090 GPU with driver version 610.47 (May 26 2026). I have two displays, both have HDR enabled.

I attempted to view https://www.youtube.com/watch?v=vP-ctJUQBws as described in the foxfooding doc. I do not see the HDR badge.

about:support is attached

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::Graphics' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Ashley Hale [:ahale]]

Current theory is that Hyper-V may be causing VideoProcessorBlt to not support the additional conversions that is NVIDIA drivers implement. Unclear on how common that configuration is but I think it's rare. We'll definitely need to mention it in release notes. Our path to supporting this case is the same as for Intel graphics where the driver doesn't implement YUV HLG to RGB PQ video conversion.

Comment 3

[tritchie]

Attachment: about:support from 610.62

Comment 4

[tritchie]

I've updated my nvidia drivers to 610.62 released Jun 16 2026.

Now the HDR badge is available but the video is extremely, extremely bright.

I've uploaded the updated about:support.

Comment 5

[tritchie]

Confirmed gfx.color_management.hdr.force_enabled is disabled on this profile

Comment 6

[Ashley Hale [:ahale]]

gfx.color_management.hdr.force_enabled is expected to be false
gfx.color_management.hdr is expected to be true

Nightly offers HDR video regardless of whether VideoProcessorBlt works, you are seeing one of the cases where it doesn't... Fixing that is happening in Bug 2037689.

Comment 7

[Ashley Hale [:ahale]]

We now have the ShaderBlt code in place (Bug 2037689), please re-test on nightly or 153 beta at your convenience.

Comment 8

[tritchie]

Thank you, I'll be able to test next week and report back

Comment 9

[tritchie]

Just tested on nightly and works great now

Comment 10

[Ashley Hale [:ahale]]

Alright, closing then, thank you for confirming.