I have an iPod nano which records video and i'm wondering if i erase my music and sync it to another itunes list will it erase my videos?

Here is the guide showing how to copy your recorded video on iPod nano (5th generation) to your computer for viewing and backup.
http://support.apple.com/kb/HT3837

If you want to put common music,videos from iPod to computer, here is the guide: http://gutensoft.com/Guide/How-to-transfer-songs-and-videos-from-ipod-to-computer.htm

Hope these can be helpful to you.
For more tips, you can search at http://google.com

Yes. once you sync your iPod with another iTunes library, it will cover your iPod files with the new iTunes library file. If you care about your iPod recorded video, you can follow this step by step guide to transfer the video from your iPod Nano back to computer for backup at first, it works pretty well for my iPod Nano.
http://www.ipod-transfer-copy.com/how-to-transfer-ipod-recorded-video-to-computer.html
Hope it helps. Feel real to email me if you need further help or use http://www.answer.com to search more answers.

It won't be a problem if you use AVCWare iPod to iPod/Computer/iTunes Transfer, even though you don't have iTunes library.
It helps you to add audio and video files from your PC to your iPod/iPhone, such as music and movies. On the other hand, it can also transfer files from iPod to computer.
Wish this can help and good luck.

I think its step by step guide is most helpful.
http://iphone-to-computer.net/transfer-songs-videos-photos-playlists-from-ipod-to-computer-itunes.html

It is easy to use and you can try it now.
http://www.google.com/search?hl=en&newwindow=1&q=site%3Aiphone-to-computer.net++avcware+ipod+transfer&btnG=Search&aq=f&oq=&aqi=

Yes. It will delete all your information you have put on there unless you log in to your old account.

Yes. It will delete all your information you have put on there unless you log in to your old account.

yes