![]() ![]() Unauthorized reproduction of M4V files may be prevented using Apple's FairPlay copy protection. It is designed to compress VHS-quality raw digital video and CD audio down to 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV, and digital audio broadcasting (DAB) possible. MPEG-1 is a standard for lossy compression of video and audio. Apple uses M4V to encode video files in its iTunes Store. ![]() ![]() The primary difference is that M4V files may optionally be protected by DRM copy protection. The M4V file format is a video container format developed by Apple and is very similar to the MP4 format. MPEG - Motion Picture Experts Group file interchange format (version 1)
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