Open Bug 836167 Opened 11 years ago Updated 2 years ago

Animated GIFs over YouTube video slower in FF vs. Chrome

Categories

(Core :: Graphics: ImageLib, defect)

x86
macOS
defect

Tracking

()

People

(Reporter: humph, Unassigned)

References

()

Details

(Whiteboard: [platform-rel-Youtube])

This page puts a bunch of animated GIFs over a YouTube video, and the result is a lot choppier and (seems to) use more CPU in FF than Chrome.  One difference is that the video will be Flash for Firefox and h.264 <video> in Chrome, based on how YouTube's iframe embed works, which might be related.

I'm not sure if this is (related to) bug 666449 or not.
Is it better if you enable media.windows-media-foundation.enabled in a nightly build ?
This should enable h.264 playback in Firefox.
If I set that pref, the GIFs stop animating completely (only the first frame of the animation displays).
platform-rel: --- → ?
Whiteboard: [platform-rel-Youtube]
platform-rel: ? → ---
(In reply to David Humphrey (:humph) from comment #0)
> the video will be Flash for Firefox

That hasn't been the case in a very long time. Plus the site in the URL field appears to be dead.
Severity: normal → S3
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