Hi, not every video formats can be accepted by ipod nano. u want to enjoy your favorite movie on your ipod, right? Why not try this powerful dvd to ipod converter? which is one impressive DVD iPod Converter software, which is able to convert DVD to iPod, DVD to iPod touch, iPod nano, iPod classic, even ripping DVD to your iPhone, Apple TV supporting MP4 video format. 4Videosoft DVD to iPod Converter also gives the function to extract the DVD video to iPod MP3, AAC, M4A, AIFF, WAV.
You can go here to free download it.
The following is the instruction of how to use it.
Step 0: Download and install the tool from the site above.
Step 1: Run it
Step 2: Click the "Load DVD" button to load your DVD
Step 3: Choose the output video (MP4/H.264) from the profile drop-down list
Step 4: Select the destination of your video
Step 5: Click the "Start" button to begin your conversion
Hope it is helpful to you.