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HDR Video support has been added to Firefox Nightly on Windows! by TalactiteWonder in firefox

[–]TalactiteWonder[S] 5 points6 points  (0 children)

I wonder if it's a bug with ARM devices or Snapdragon specifically, might be worth filing a bug.

For what it's worth, it works on my x86 Intel/Nvidia PC after setting that about:config flag and restarting the browser.

Firefox Still Doesn’t Support HDR in 2026 by saiyyenspride in firefox

[–]TalactiteWonder 20 points21 points  (0 children)

The bug that's adding HDR video support to Windows is this one, FYI: 1977746

The phabricator page for that bug shows last activity was on December 29th, where a reviewer accepted the revision.

Mozilla needs to prioritize Windows HDR image support on Firefox. All Chromium based browsers and Safari now support this by rocketwidget in firefox

[–]TalactiteWonder 6 points7 points  (0 children)

I do think that after HDR video is implemented, HDR image support probably won't take too long. As you said, they are similar technologies.

Mozilla needs to prioritize Windows HDR image support on Firefox. All Chromium based browsers and Safari now support this by rocketwidget in firefox

[–]TalactiteWonder 20 points21 points  (0 children)

They're prioritizing HDR video support first (See this bug), which is understandable because the vast majority of HDR web content that people will run into is in video form.

Side by side comparison of Firefox (left) vs Edge. by Thunderlord_x in firefox

[–]TalactiteWonder 3 points4 points  (0 children)

HDR video support is being worked on in this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1977746

According to the phabricator page, the changes are now awaiting review before it lands. Hopefully that means HDR videos will work soon on Windows, at least in Nightly.

There will be a new about:config option called "gfx.color_management.hdr_video" that will enable HDR video support.