What are the requirements for playing video in iTunes?
You will need the following items: Fifth Generation iPod High-powered USB port (USB 2.0 recommended) iTunes 6 or later to transfer video to the Fifth Generation iPod. Video content that is in an iPod compatible format. To play purchased videos, you need iTunes 6 or later, which has the following minimum system requirements: Mac OS X users will need… 500 MHz G3 for music playback; 500 MHz G4 for purchased video playback. Mac OS X 10.3.9 or later for purchased video playback. 256 MB RAM and 16 MB of video memory to play purchased videos. QuickTime 7.0.3 or later for purchased video playback. Recommended: A broadband Internet connection for accessing the iTunes Music Store. Windows users will need… 500 MHz Pentium for music playback; 1.5 GHz Pentium 4 for purchased video playback. Windows 2000 or Windows XP with the latest service packs installed. 256 MB RAM and 32 MB of video memory to play purchased videos. QuickTime 7.0.3 or later.