So swerdna, my thoughts of Firefox 4 is that its likely not going to work until the final product is released or with one of the final Release Candidates comes out and moves to openSUSE 11.4 update. Until then I am thinking you should stop using Firefox 4 beta 12 or consider dropping back to Firefox 3.6.15. Either way, the answer is to not use Firefox 4 beta 12. Forgive me if this is not the answer you had hoped for, but I continue to look for a better answer myself.
@caf426: Glad you have no problems – it means it’s fixable, here’s a link to a vid that plays smoothly in Goolgle Chromium but flickers and jerks in Firefox: IMDb Video: Avatar: Trailer #2 @jdmcdaniel3:“yes or no?” → No. **
swerdna, I must say that the Firefox 4 situation will fix its self in the future and the only problem is that it was not ready for prime time when openSUSE 11.4 came out (in my humble opinion which others may not share). You have a few choices you can make now until Firefox 12 is ready for all to use. I did visit your Movie player for Avatar and it worked just fine in Firefox 3.6.15, my temp solution I decided to use until Firefox 4 is up to the task.
brucecadieux, it seems kind of strange that Flash 10.2 works fine with Firefox 3.6.15 while using Flash 10.1 works just fine with Firefox 4 beta 12. The story just get more curios by the day. I will say that anything to allow the standard Firefox 4 in openSUSE 11.4 to work would be a good thing to try.
On my 11.4 KDE (zypper dup upgrade from RC) and included Flash, that clip plays smoothly with SeaMonkey. It only plays smoothly and displays correctly with FireFox 4 beta in full-screen mode. In windowed mode, it doesn’t display that website’s player properly (the transport is there but only part shows where clicked (that’s how I reached full-screen mode), and there is a black square in middle of the window. However, I don’t get that or any problem when streaming BBC iplayer films so I won’t be downgrading Flash in a hurry! Any ideas about the windowed mode issue in FF?
Hmm, what else may be different? PulseAudio is enabled here. Having added Packman’s Essentials repo, I installed the automatically selected updates (via YaST). I didn’t use the multimedia guide (deliberately to see how far I could get), as everything (not yet done local DVD video playback) I normally use worked after finally adding VLC, and gstreamer’s bad and ugly plugins. As of today all Packman Essentials updates (upgrades/downgrades) are applied. However I see there are some official updates pending (KDE packages mostly), so best to apply those first and report back.