[Webkit-unassigned] [Bug 33359] New: Scrolling through pages with embedded html5-videos is not so smooth

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=33359

           Summary: Scrolling through pages with embedded html5-videos is
                    not so smooth
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mehmet.sahin at gmx.net


Hello Webkit-Team,

srolling with the trackpad (two-finger-scrolling) through pages with embedded
html5-videos is not so smooth. Against it scrolling through pages with embedded
flash is/feels very smooth!

The html5-video is flickering and the scroll-behaviour feels not smooth. 

CPU-usage while watching the video is 35% and when I'm scrolling with the
trackpad the cpu-usage goes up to 80%.

Webkit: WebKit-SVN-r52951
OS: Mac OS 10.5.8
Hardware: Macbook 3,1

Reproducable always.

Example Links: 

1.) http://www.apple.com/imac/the-new-imac/#large
2.) http://www.youtube.com/html5
3.)
http://openvideo.dailymotion.com/video/xbraxz_mini-concept-beachcomber-interior-d_auto

Thanks in advance.
Mehmet

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