The advantages of AVI file format
AVI file format is developed by windows, which makes it playable with all the major Microsoft and non-Microsoft operating systems. It do not require any particular hardware device of software application for the file to run. And it is the most widely used video format for promos, short movies and advertisements owing to its compression capabilities.
Why want to convert M4V to AVI
The M4V file format is a video container format developed by Apple and is very similar to the MP4 format. But M4V files may optionally be protected by DRM copy protection.
Due to Apple DRM protection, to play iTunes movies, TV shows and music videos, the computer needs to be authorized (using iTunes) with the account that was used to purchase the video. Besides, You can only play iTunes media files on Apple devices. A single device can contain purchased content from up to five accounts; iTunes will not allow you to add data from a sixth account.