In daily life, for many cases we need to convert protected m4v format video files to unprotected MOV format, eg. if you make iTunes movie rentals on iTunes Store, but you can't play those rented movies on other players and you can only watch the whole for 24 hours. So conversion between M4V to MOV is necessary.
You know, M4V format is one of the formats used for video podcasts, based on a codec used by the QuickTime. Files of this format can be played in iTunes. but MOV is a multimedia development, storage, and playback technology from Apple. As a multimedia standard, MOV is not purely linear. It could contain interactivity and causes problems when converting to other video formats. If you want to convert m4v files to MOV directly, it is very difficult.
But if you have a third party m4v to MOV conversion tool. All the things will get easy and simple. Now compared the m4v to MOV converter software, recommend you a professional and powerful M4V to Quicktime MOV converter tool - M4V Converter Plus.