Closed Bug 1766383 Opened 3 years ago Closed 6 months ago

A 4k video downloaded from youtube uses more "3d" than Chrome on local playback (but uses the same "Video codec 0")

Categories

(Core :: Graphics: WebRender, defect, P2)

defect

Tracking

()

RESOLVED DUPLICATE of bug 1891727

People

(Reporter: mayankleoboy1, Unassigned)

References

(Blocks 2 open bugs)

Details

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(2 files)

I have a 4k video downloaded from Youtube for local playback. (This is the "Blender tears of steel 44" video, so its open source etc.)

This is the comparison of Chrome Vs Nightly when playing the downloaded video locally from my system in fullscreen:

Nightly:
3d: 10%-15%
Video codec 0 : 20%
CPU : negligible

Chrome:
3d: negligible
Video codec 0 : 20%
CPU : negligible

Effectively, on playing the same video, Nightly uses more GPU and power. This might be a dupe of other bugs. Feel free to mark as such.

Attached file about:support
Attached image Untitled.png

That 3D part in GPU is related with color conversion and scaling, which are currently done by Firefox itself. Chrome and Edge are probably doing that via DirectComposition. There are some bugs related with that eg. bug 1724949, bug 1722447.

Component: Audio/Video: Playback → Graphics
Type: enhancement → defect
Severity: -- → S3
Priority: -- → P2

This also repros on a 1440p VP9 video like this : https://www.youtube.com/watch?v=XF0R67X_zy0

Component: Graphics → Graphics: WebRender
See Also: → 1891727
Status: NEW → RESOLVED
Closed: 6 months ago
Duplicate of bug: 1891727
Resolution: --- → DUPLICATE
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