Video Format Comparison

M4V vs MP4: Apple's iTunes Format vs Universal Video

M4V is Apple's version of MP4, used for iTunes Store purchases and Apple TV content. M4V files can contain FairPlay DRM (Apple's copy protection) for purchased movies and TV shows. DRM-free M4V files are functionally identical to MP4 — you can often rename .m4v to .mp4 and it will work. DRM-protected M4V files will only play in authorized Apple software.

M4VvsMP4

Quick Verdict

Use M4V when…

M4V is only relevant if you've purchased videos from the iTunes Store or Apple TV — you'll encounter it there. Otherwise, use MP4.

Use MP4 when…

Use MP4 for everything: sharing, streaming, storing, uploading. MP4 is universally compatible; M4V is Apple's proprietary variant.

M4V vs MP4: Feature Comparison

Feature	M4V	MP4
Container format	MPEG-4 (Apple variant)	MPEG-4 (standard)
Video codec	H.264 (or H.265)	H.264, H.265, AV1, VP9
DRM	Optional FairPlay DRM	No DRM (DRM added by platform)
iTunes/Apple TV	Native format	Supported
Android	Limited support	Universal
Can rename to .mp4?	Yes — if no DRM	N/A
Play in VLC	Yes	Yes

When M4V wins

✓Container format: MPEG-4 (Apple variant)
✓Video codec: H.264 (or H.265)
✓DRM: Optional FairPlay DRM

When MP4 wins

✓Container format: MPEG-4 (standard)
✓Video codec: H.264, H.265, AV1, VP9
✓DRM: No DRM (DRM added by platform)

Frequently asked questions

Can I rename M4V to MP4?

If the M4V file is DRM-free (your own video, a movie rented and re-encoded, a DRM-free M4V download): yes, renaming .m4v to .mp4 works — they're the same container format. If the M4V has FairPlay DRM (iTunes Store purchase): renaming doesn't work — the DRM protection prevents playback outside Apple's authorized software.

How can I tell if my M4V file has DRM?

Try renaming it to .mp4 and opening in VLC. If it plays: no DRM (or DRM was stripped). If VLC shows an error or plays with no video: FairPlay DRM is present. Alternatively, look at the file size — DRM-protected movies are typically 1-5GB; DRM-free M4V files can be any size. iTunes Store purchased movies always have DRM by default.