FF13 Scrolling breaks/chops up embedded videos

[DaMorgue]

I worked around this issue by adding query string ?wmode=opaque to the end of the URL in the iframe'd YouTube video. This will solve it for end-users whereas the workaround of disabling HWA cannot be done on the users behalf (obviously). Hope this helps

[sakuraba]

Could you test with Flash 11.2 please?

Uninstall Flash versions with the Uninstaller: http://download.macromedia.com/pub/flas ... _64bit.exe
Then install Flash 11.2: http://fpdownload.macromedia.com/pub/fl ... _32bit.exe (it's the 32-bit version because FF is 32-bit app)
(disable autoupdate after the install, the Flash setup will ask you)

I was having the exact same problem with the current latest build of Firefox(14.0.1) and Flash (Adobe Flash Player 11.4.402.265). The above instructions solved the issue.

Thank you.

[James]

I was having the exact same problem with the current latest build of Firefox(14.0.1)

You are two Firefox update behind as Firefox 15.0.1 is the current as of today.

[Vano]

With latest Flash 11.4 it got even worse, to the point, that I can't do scroll on youtube page while video is playing, it freezes whole browser. The thumbnails that popup when cursor moved over timeline are being delayed badly.
Recorded a video so you can see what I mean:
http://youtu.be/nkA-sLZYlsM


Downgrading to 11.2 seems to solve the problem.

Note, this only happens with Firefox (tested on version 12 through 18.0a1) all other browsers seems to be not affected.