Only audio in HTML5 [with QtWebkit?]

I've installed all gstreamer (both 0.10 and the new one) and vlc (an I'm using phonon-vlc) plugins just to be sure but... when I run HTML5 video on some site, I can hear sound (the video is playing) but I can't see actual video frame. I've tried Konqueror, Rekonq and QupZilla browsers - all behaves the same so it's probably something with qtwebkit (KHTML of Konqueror is unusable on YouTube and is not working too but the reasons can be different). The thing is I've added
IgnorePKG = gtk gtk2 gtk3 gconf
to my /dec/pacman.conf to keep my system clean (GTK applications behave poorly on my system so I wanted to complitelly get rid of the toolkit) but I want to use YouTube anyway...
I've just tested that Opera is playing fine... but the problem is there anyway.

What I was expecting was other people chiming in on this with possible solutions to stream audio only. Aside from simply "buy something new" .
If Apple makes a product that has a separate output for audio and they advertise and sell that product stating that you can use it with AirPlay to "listen to music", then to me it seems pretty obvious you don't need to turn on your television all the time to use these aspects of that product. Of course you need a power lead to watch video, that's something that has not to be said, I follow you there. If however you have to turn on your TV to simply listen to music (despite the fact that you have a dedicated output for music), THAT is imho something that needs to be said if that's the case... That's not obvious, that's just nonsense; why would you need to watch if the only thing you want to do is listen?
Anyway, semantics aside and wether Apple does or does not state certain things, you're answers were also helpful (for which I thank you) because they made me look at this problem from a different angle. So this morning I thought: if my TV sends a bad off/standby signal to my HDMI and that in turn is blocking my optical audio out, why don't I just unplug the HDMI cable from the Apple TV and only use the optical audio out?
And eureka! I've been enjoying an hour of nice Airplayed music without my TV on!
So thanks a lot for putting me on the right track and sorry if I acted a bit annoyed, but I really felt had a point here. As did you Anyway, nice to be able to have a decent online discussion without things getting out of hand and with the additional bonus that my initial problem is now solved! (which, as a final note, is something very simple that could easily be stated in the manual: "if you want to use the optical audio out of your Apple TV to stream music, it is advised that you unplug the HDMI cable to prevent unwanted standby/off signals". )
Thanks for your help!
S.

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