Convert M4V to MP4 Online — No Upload, No Watermark
M4V is an Apple variant of MP4 often used by iTunes — sometimes rejected by non-Apple players. Converting to MP4 gives you a file that plays on every phone, browser, and editor without re-encoding at playback time.
Drag & drop your video here, or click to browse
Max file size: ~2 GB (memory permitting)
Where M4V files come from
M4V is Apple's MP4 variant, used by iTunes for films and TV episodes and written by some Apple export paths. Structurally it is an MP4 with a different extension, sometimes carrying FairPlay DRM on purchased content.
What changes when you convert M4V to MP4
| Container | Rewritten as standard MP4 |
|---|---|
| Video | H.264 re-encoded at CRF 23 |
| Audio | Re-encoded to AAC |
Worth knowing first
An M4V without DRM is already an MP4 in all but name, and renaming the file usually works. Bother with the conversion only when a specific app refuses the extension, or when the file also needs its codecs normalising. Purchased iTunes content carries FairPlay DRM and will not convert.
FAQ
Can I just rename .m4v to .mp4?
For DRM-free files, almost always yes. The container is the same. Rename first and only convert if the file still will not open, which saves you a re-encode.
Why does my iTunes film fail?
Purchased or rented iTunes video carries FairPlay DRM, which ties playback to your Apple account. The file cannot be decoded outside authorised apps, so the conversion fails. Videos you exported or ripped yourself have no DRM.
Is M4V worse quality than MP4?
No, they are the same format. Any quality difference comes from how a particular file was encoded, not from the extension.
Is this M4V to MP4 converter really free and without upload?
Yes. The tool runs entirely in your browser using FFmpeg compiled to WebAssembly. Your M4V file never leaves your device — open the DevTools Network tab to verify zero uploads. No signup and no watermark. The practical size limit is the memory your browser gives this tab, which is generous on a computer and a few hundred megabytes on a phone.