M4V to MP4 Converter - Free Desktop App

M4V is Apple's video container format, nearly identical to MP4 but with one key difference: M4V files can include Apple's FairPlay DRM (Digital Rights Management) copy protection. Structurally, M4V and MP4 use the same MPEG-4 container, same H.264 video codec, and same AAC audio. The .m4v extension signals that the file may be DRM-protected.

Movies and TV shows purchased from iTunes before 2009 (and some content after) use Apple's FairPlay DRM, which ties the file to your Apple ID. These DRM-protected M4V files will only play in Apple software like iTunes, Apple TV app, or on Apple devices. Diwadi can convert DRM-free M4V files but cannot remove DRM protection from protected files.

For DRM-free M4V files, yes, they are essentially the same container and renaming from .m4v to .mp4 often works. However, Diwadi performs a proper conversion to ensure full compatibility, correct metadata, and reliable playback across all devices and players. For DRM-protected files, renaming alone will not work.

Most non-Apple media players don't recognize the .m4v extension, and DRM-protected M4V files are locked to Apple's ecosystem. Even DRM-free M4V files may not be recognized by Windows Media Player or Android video apps. Converting to MP4 gives you a universally compatible file.

No. Diwadi cannot remove or bypass Apple's FairPlay DRM. If your M4V file is DRM-protected (purchased from iTunes with copy protection), it can only be played through authorized Apple software. Diwadi converts DRM-free M4V files, such as those from iTunes Plus purchases, personal recordings, or other sources.

Try playing the file in VLC media player. If VLC plays it without issues, it is DRM-free and Diwadi can convert it. If VLC shows an error or blank screen, the file likely has DRM protection. You can also check in iTunes/Apple TV app by right-clicking the file and viewing its info -- look for 'Protected' in the Kind field.

Yes. Drag your folder of M4V files into Diwadi and it will convert all of them to MP4. Hardware acceleration uses your GPU to speed up the process by 5-20x. DRM-free files will convert successfully, while any DRM-protected files will be skipped with a notification.

No meaningful quality loss. Since M4V and MP4 use the same underlying codecs (H.264 video, AAC audio), the conversion preserves the original quality. With Diwadi's 'Keep Original' setting, the output MP4 is visually and audibly identical to the source M4V file.

Content downloaded through the Apple TV app for offline viewing is DRM-protected and tied to your Apple account. These files cannot be converted by any third-party tool, including Diwadi. They are designed to play only within the Apple TV app on authorized devices.

The difference is DRM. M4V files without DRM protection are structurally identical to MP4 files and often play fine even without conversion. M4V files with FairPlay DRM contain encrypted video streams that only Apple's software can decrypt, so they will fail to play outside the Apple ecosystem regardless of the file extension.