[Webkit-unassigned] [Bug 169001] [GStreamer] Volume button is broken on YouTube

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Jun 14 12:34:14 PDT 2017


https://bugs.webkit.org/show_bug.cgi?id=169001

Charlie Turner <cturner at igalia.com> changed:

           What    |Removed                     |Added
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                 CC|                            |cturner at igalia.com

--- Comment #1 from Charlie Turner <cturner at igalia.com> ---
Created attachment 312913

  --> https://bugs.webkit.org/attachment.cgi?id=312913&action=review

Not gstreamer, probably css animations

I'm not sure why this is tagged gstreamer, it's either the CSS animation engine or the compositing layer creating these rendering artefacts from what I can tell.

It doesn't seem like a cross-platform issue weirdly, but I'm unfamiliar with the above areas to dig very deep. Safari at least does not have this issue.

Gstreamer doesn't render video controls. That's either done my the media elements, or in the case of YouTube, via custom JavaScript.

I've attached another screencast showing a couple more things,

1) When muted, the artefacts don't appear
2) If you mess with the slider, it can change the artefact.
3) If you resize the window, you get a much worse artefact.

The controls on youtube are made out of svg elements if that's a help.

I think this should be reassigned to layout/rendering. YouTube isn't using the <video> elements controls attribute AFAICT, so it's not media elements to blame.

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