I'm making a dvd project where i made an 'in animation' of my dvd menu in after effects. However when the dvd changes from the in-animation (.mov) to the menu (.psd) i have some kind of a glitch (just a couple of frames). the menu seames to have a lower resolution the first couple of frames. The aspect ratio of both the menu and the in amimation are the same.
You could just create an animated motion menu for the entire background. In After Effects, extend the duration of the composition of your intro animation to the length you want your menu to display. Export the entire composition (or use dynamic link) and set as the motion background to the menu. Set the loop point of the menu to just after the intro animation ends. Let me know how that works out for you.