Ghuncha actually the thread starter has confused me, look here for what i am talking about. My car supports DVD-Audio, not video, the touchscreen display is only for navigation. Some more higher end cars now come with DVD-Audio, which is 500 times the resolution of high CD quality audio, and it is in 5.1 surround sound format. Dvd-Audio disks do not work in most regular DVD-Video Players either, I buy special disks but the selection is still very poor.
Interesting reading here that will educate you on the topic:
http://electronics.howstuffworks.com/question344.htm
Here is the link for the car I currently have and the info they have on the subject (old link but should suffice:
http://dvdaudiodaily.com/news/0309/03.elliot.scheiner.dvd-audio.system.acura.tl.shtml
Need some more clarity on what the thread starter is actually looking for.