Q: Philips say that AppleTV will not work with their sets?

I have great news, and I hope you check this regularly because I had the same problem and figured out a solution.  I bought my Philips back in 2007 because I wanted to have a high def 1080p television and the ambi-light just happened to be a nice added bonus.  I love Apple products so I bought an AppleTV to network all of my computers at home with the television and needless to say, I was pretty bummed when I moved to a new place and had my Philips in the family room and couldn't get AppleTV to work.  I had the same problem with the unsupported video format and it would occassionally come on and then disappear for an extended period of time. So then I thought logically, what would happen if I tried to hook up a brand new iPod to something that was created in 2007.  There probably needs to be some kind of update to the old thing.

It's not your cables, it's not your AppleTV, it's your softward on your TV.  All you need is a USB Thumb Drive and a computer.  You'll need to plug in the USB to your TV (left hand side by the RCA input) to get an identification tag.  Go to the Menu on your television and hit Software Update.  It'll store the ID card on your USB.  Simply plug that into your computer, click on the file, Accept the terms of the update and follow the instructions on the webpage.  You'll need to stick the USB back into the TV (making sure not to do anything while it's updating) and once it's finished, viola, AppleTV works!  I just tried streaming a file over my network to my AppleTV and it played perfectly fine. 

I hope that helps, and I'll be back to check in case you have any problems.

This solved our issue - thanks for posting!

Can someone help me?  I also have the ambilight and I'm trying to hook my iPad up to it so I can hear iTunes through my tv. I hooked it up on the side with the USB/iPad charger and it says the same thing "unsupported video format". I did what the last person said, putting a USB thumb drive in and clicking on software update but when I do that it gives me 2 options. Current software info and local upgrades. Current software just shows my TVs (outdated/2006) software.  When i choose Local upgrades it just says "checking for new software on inserted media". Then says "no software found on the inserted media"  it never gives me an identification tag like the last poster states. I did take the USB out and searched on my computer for any files related to my tv and found none. I put the USB back into my tv and it just gives me the same info as before.  Can someome PLEASE HELP. I just wanna listen to some music while I clean my house! Lol