The MP4 video file is a regular video format, while M4V is usually copyright protected MPEG-4 file. All video and audio data are compressed in a single file, so the file size is pretty small. MP4, on the other hand, is a widely used video format for most of the devices. It does not store media content, but also the copyright protection. Almost all video contents that you purchased from the iTunes Store are saved in M4V. M4V is a video format designed for Apple devices, such as iPhone, iPad, Apple TV, etc. What are the differences? Here are some important tips you should know about the two video formats.
Just as mentioned above, both M4V and MP4 are based on MP4G-4.
