AVI vs M4V, difference between AVI and M4V format

Comparsion between AVI and M4V

File Extension	AVI	M4V
File Type	Audio Video Interleave File	iTunes Video File
Description	AVI is a Windows-based multimedia file container format. As the most popular video format, AVI files can contain both audio and video data in a file wrapper that allows synchronous audio-with-video playback.	M4V is a file container format used by Apple's iTunes application. The M4V file format is a video file format developed by Apple and is very close to MP4 format. Apple uses M4V files to encode TV episodes, movies, and music videos in the iTunes Store.
Developed by	Microsoft	Apple
Pros	Well compatible with most Windows-based media players and devices;	Default format used by iTunes; fit for iPhone, iPad, etc.
Cons	Not work very well on Mac/iOS-based devices	Most M4V files are DRM-protected, so you need to make them DRM-free first
Help You Choose	Both AVI and M4V are popular video formats that can be played almost anywhere. As to video quality, it's hard to tell which is better as with the same source video content. Thus, you can choose either format as per your need.
Programs that open AVI/M4V files	Microsoft Windows Media Player Adobe Flash Professional CC iOrgsoft Video Converter for Mac	Apple QuickTime Player Apple iTunes XBMC