M4V File Format (.m4v)
An M4V file is an MP4 file under a different extension, used by Apple for video sold through the iTunes Store, where it may also be wrapped in FairPlay encryption that ties playback to an Apple account.
M4V at a glance#
| Full name | Apple MPEG-4 Video |
|---|---|
| File extension | .m4v |
| Category | Video Files |
| Developer | Apple |
| MIME types | video/x-m4v |
| Compression | Lossy |
| FileFlip support | FileFlip reads and writes this format |
What a .m4v file can hold#
These are the things a M4V file either supports or does not, and they are what decides whether a conversion keeps everything or quietly drops something.
| Embedded metadata | Yes |
|---|---|
| Audio | Yes |
| Video | Yes |
| Subtitle tracks | Yes |
| Chapters | Yes |
| Encryption | Yes |
Strengths and limitations of M4V#
What M4V does well
- Structurally an MP4, so a file without DRM plays in anything that reads MP4
- Carries H.264 video with AAC or Dolby Digital audio, the combination with the widest hardware decoder support
- iTunes film and TV purchases commonly ship with chapter markers already embedded
- Holds subtitle and closed caption tracks that Apple's players read without a sidecar file
Where M4V falls short
- A FairPlay-protected M4V is encrypted and will not open in VLC or any converter
- Nothing in the extension tells you whether a given file carries DRM until you try to open it
- Some Android players and older set-top boxes reject the file on extension alone despite it being an MP4
- M4V has no specification of its own, so behaviour depends on what Apple's tools happened to write
Leave a file as M4V when it came from the iTunes Store and will be watched in Apple's own apps, where the chapters and subtitle tracks work as intended.
Convert an M4V you created yourself to MP4 when a device refuses it on the extension, which is the usual reason the file will not open.
How to open a .m4v file#
A .m4v file opens in the programs below, grouped by the platform you are on. If you would rather not install anything, FileFlip converts M4V into a format your machine already opens, and it does it in the browser tab rather than on a server.
| Platform | Programs that open it |
|---|---|
| Windows | Apple TV, iTunes, VLC (files without DRM) |
| macOS | QuickTime Player, Apple TV, VLC (files without DRM), IINA |
| Linux | VLC (files without DRM), mpv |
| iOS | Apple TV, Photos, VLC (files without DRM) |
| Android | VLC (files without DRM), MX Player |
| Web | FileFlip |
M4V questions people ask#
What is the difference between M4V and MP4?
There is no structural difference. M4V is Apple's extension for what is otherwise an MPEG-4 Part 14 file, chosen so iTunes could tell its own video apart from everything else. A DRM-free M4V holds the same H.264 and AAC streams an MP4 does, and renaming it to .mp4 is usually all it takes to open it elsewhere. The one thing the extension can signal is FairPlay encryption.
Can I convert a DRM-protected M4V to MP4?
No converter can turn a FairPlay-protected M4V into an MP4, because the video inside is encrypted rather than merely wrapped. Apple's DRM ties decryption to an authorised Apple account and device, so tools that read the file see encrypted data and stop. Purchases only play in Apple's own apps, which is what buying rather than owning the file means in practice.
How do I know if my M4V file has DRM?
The filename gives nothing away, so the practical test with an M4V is where it came from. Files bought or rented from the iTunes Store carry FairPlay, and files you exported yourself from iMovie, Final Cut or a converter do not. Opening the file in VLC settles it: a DRM-free M4V plays, a protected one refuses.
Is M4V a codec?
M4V is a container, not a codec, and the same container MP4 uses. What is inside is almost always H.264 video with AAC or Dolby Digital audio, since that is what Apple encoded iTunes video as. Playback problems with M4V are usually about the extension or DRM rather than the codec, which is unusually predictable for a video file.
Will an M4V file play on Android or Windows?
An M4V without DRM plays anywhere MP4 does, including Android and Windows, though some players refuse to try because they do not recognise the extension. Changing it to .mp4 or remuxing the file solves that in a few seconds with no quality loss, since nothing about the video needs to change. Files still carrying FairPlay only play in Apple's apps.
Converting M4V files#
Convert M4V to another format
Convert another format to M4V
Every conversion runs inside your browser. The file is read from your disk, the work happens on your own machine, and nothing is uploaded. How FileFlip works names the engine behind each family and how to verify that for yourself.