I have not tried this myself, but i think you need this little gadget.

There is a (new) HDMI - Composite/S video converter made by Gefen. Supports also audio.

http://www.gefen.com/gefentv/gtvproduct.jsp?prod_id=5280 

Stefan 

I have my Apple TV connected to my Avant through the component input. However, after it has been outputting a signal for awhile, everything takes on a pink hue. I contacted B&O tech support and they advised that this is a common problem with early Avants. There is a kit to fix the problem, but I'm sure the repair would be quite costly.

I've actually considered getting a converter to convert the signal to s-video. This way, the Apple TV can take advantage of the phenomenal video processing of the Avant -- which the component input lacks. I'm interested in hearing about the results from anyone who has tried this. 

Hi,

I'm using the www.svideo.com converter as well and it works fine for me.

First I have had connected it the S-Video input of my Avant. But ATV is sending a signal all the time and thus after activating one of the sources (TV, Radio) always the S-Video input was activated, forcing me to choose the source again.

Now I'm using the Decoder scart with composite input (via a Scart adatper). No claims regarding the picture quality so far.

Cheers, Arno

I have another question, forgive me as I often do miss the simple things!

My Avant currently has a virgin cable box connected, my understanding is that software in the TV can control the STB via the IR cable connected to the TV and stuck in front of the IR sensor of the STB, this is how the STB receives it's commands from the TV/BEO4.

If you connect Apple TV to the Avant, which has been updated so that it has the correct software, how does it send IR commands to the ATV as my Avant only appears to have one output for this.  Or does this operate in a completely different way? 

Peter G 

I have done a similar installation on a BeoVision 5 which is the same chassis as an avant.  You need the new STB chip, which is part number 8344785 - it has the apple remote on it but I am not sure about the virgin box.  Then you need a RBG converter with cables - I used JS technologies :