The M4V file format is a video container format developed by Apple and is very similar to the MP4 format. The primary difference is that M4V files may optionally be protected by DRM copy protection. Besides, the extension also signals to operating systems like "Microsoft Windows" that the video clip is actually about a licensed movie, and not just a simple clip in particular. This also ensures that embedded covers are correctly displayed in the Windows file explorer.
The M4V file format is a video container format developed by Apple and is very similar to the MP4 format. The primary difference is that M4V files may optionally be protected by DRM copy protection. Besides, the extension also signals to operating systems like "Microsoft Windows" that the video clip is actually about a licensed movie, and not just a simple clip in particular. This also ensures that embedded covers are correctly displayed in the Windows file explorer.
Its first public appearance was in 2006, when Apple introduced the iTunes Store. The M4V format has been an important part of the Apple ecosystem ever since, and is often used to distribute movies, series, and other video content on the iTunes Store. Unauthorized reproduction of M4V files may be prevented using Apple's FairPlay copy protection. A FairPlay-protected M4V file can only be played on a computer authorized (using iTunes) with the account that was used to purchase the video. In QuickTime, M4V videos using FairPlay DRM are identified as "AVC0 Media".
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).