Video
What is an M4V file?
Updated Jul 2026
M4V is Apple's video format, built on the same MP4 foundation but used for content sold or rented through iTunes. It plays natively on Apple devices and in iTunes or Apple TV, and its main trait is the option for Apple's own copy protection, which can lock a file to your Apple account and block it from opening elsewhere.
- Extension
- .m4v
- Type
- Video
- Typically
- iTunes / Apple video
- Compression
- Lossy
Why M4V exists
M4V grew out of iTunes in the mid 2000s as Apple's container for movies and TV shows sold through its store. It's built on the MPEG-4 standard, the same base as the common MP4 file, but Apple gave it its own extension so it could tell apart video meant for iTunes playback from ordinary video files.
Under the hood, an M4V file usually holds H.264 video with AAC audio, wrapped the same way an MP4 would be. The difference that actually matters is FairPlay, Apple's copy protection. Purchased movies and rentals often ship with it turned on, which ties playback to your Apple account and keeps the file from opening in most players outside Apple's own apps.
People run into M4V mostly through iTunes purchases, video exported from Apple software, or camera and screen recording apps that default to the extension. It becomes a problem the moment you try to play it on a non-Apple device, edit it in another program, or move it somewhere that only reads plain MP4.
The trade-offs
Strengths
- Plays natively across Apple devices and apps
- Same efficient H.264 or H.265 compression as MP4
- Supports chapters and other iTunes-style metadata
Watch-outs
- Protected M4V files won't open outside Apple's own software
- Poor support on Windows, Android, and most non-Apple players
- Often needs converting to plain MP4 before editing or sharing
A note on privacy
An M4V file can carry metadata like chapter markers, creation dates, and details tied to the device or account that made it. Uploading it to an online converter sends that file, and whatever is embedded in it, to someone else's server. Converting it on your own machine keeps the video and its metadata local the entire time.
Convert an M4V file
- Convert M4V to GIF
- Convert M4V to MP4
- Convert M4V to MOV
- Convert M4V to MKV
- Convert M4V to WebM
- Convert M4V to AVI
- Convert M4V to WMV
- Convert M4V to FLV
Questions
How do I open an M4V file?
On a Mac, iPhone, or iPad it opens by default in Apple's video apps. On Windows or Android you'll usually need to convert it to MP4 first, since most players there don't recognize M4V directly.
Is M4V the same as MP4?
Structurally, they're very close, both built on MPEG-4. The real difference is that M4V files, especially ones bought through iTunes, can carry Apple's copy protection, which MP4 files never do.
Why does my video save as M4V instead of MP4?
Some Apple apps and iTunes purchases default to the M4V extension to mark video meant for Apple's ecosystem, even when the underlying video and audio are the same as a standard MP4.
Can I convert M4V to MP4 without uploading it?
For unprotected M4V files, yes. A desktop app like Morphjet renames and repackages the file into MP4 on your own computer, so nothing leaves your machine. Files locked with Apple's copy protection can't be converted this way.
Morphjet opens and converts M4V and 1,800+ other formats, all on your own computer. Launching this July.