Need a program to convert videos?

I need to be able to edit my videos in windows movie maker, but it does not accept the avi files from my nikon. What's a good converter?

Aimersoft video converter

The best convertor I've ever used was magic video converter.http://www.magic-video-software.com/magic_video_converter/index.html

I've even used to to convert my favorite youtube videos into mp3s! It really converts any format to any other format! I know you have to buy it for the full effect, but its definitely worth the money!

Format factory… It's the best converter i've ever used… Just google it… It's free too…

Best one is MIRO

http://www.mirovideoconverter.com/

converts any format to another even flash.

FreeStudio5 from DVDVideoSoft is THE best and its FREE! It can do anything you want, and I mean ANYTHING!

I have been using Any Video Converter for years, it is really convenient. You can also take a try.

The best fomat for Windows Movie Maker is WMV. AVI is video format for most of mobile devices, if you want to edit video, you had better convert the AVI to WMV. If you only need the audio, I think WMA is better choice.
Since you only have some videos to convert, I think you can use the trial version of AVS Video Converter, it supports mp4 to many format, including WMV, WMV, MP3 and ect. Have a try.
http://www.video-converter-mac.org/video-converter/

Try this 4Videosoft Video Converter Platinum.

I heard tipard total media converter is good, you can search it on google and have a try.

You can searching in the internet withe the keywords!