What is the best way to convert iTuns m4v to avi?

I bought couples of iTunes m4v movies and I hear avi is best for editing, is that right? How can I convert iTunes m4v to avi in a easy way? I am grateful for any help.

No matter is yes or no, you should know that iTunes M4V videos are protected by FairPlay DRM technology, so it will be a difficult task for you to convert iTunes M4V to AVI by yourself. In order to transfer iTunes M4V to AVI, you can have a try of this DRM Media Converter, which is designed to remove DRM protection from iTunes purchases and rentals. Hope it’s helpful for you.

To edit a iTunes movie you need a converter that can remove DRM, otherwise it wouldn’t be able to do so. If you need a recommendation, I have been using a m4v converter called TunesKit M4V Converter for two months. It can remove DRM while convert iTunes into other formats, avi included. The quality of the converted movies can be lossless, if you need it. Besides, it has a built-in edit tool but don’t know if that meet your demands.