I have the Intravee and also have the AV in/out to the tv.

This is my setup, using 2 ipods (1 for video and 1 for the IV).

YouTube - iPod Intravee II and Ipod video playback on a BMW e46 Nav Screen

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.