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Good for exactly this
The upload that keeps rejecting your M4V, the app that only opens MP4, and the person who asked for MP4 by name.
← All the free tools
↗M4V → MP4
Convert M4V to MP4 online
Turn an M4V into an MP4 right here in your browser. Free, nothing to install, no account to make, and no watermark on what you download.
✓ Free, actually free✓ No account needed✓ Nothing kept afterwards
Use it now ↓↗
M4V → MP4
Free · no signup · no watermark
video→mp4
or just drag it in here
Your file is deleted after the job · download expires in 24 hours · no watermark
01Choose your fileDrag your video in, or pick it from your files.
02Press the buttonLeave this page open while it works — it is usually quick.
03It is yoursDownload the MP4 any time in the next 24 hours.
Why bother with this page
Because it does the one thing you came for.
You need MP4 because something on the other end insists on it — an upload form, an app, a client. MP4 gives you a video that just plays — every phone, every browser, every social upload, and this page hands it over in one step.
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No nasty surprises
Nothing is cropped, squashed or scaled — the result comes back at the size you sent in. Worth knowing: MP4 cannot carry a transparent background; use WebM when you need one.
✓
Nobody else sees it
Your upload is deleted the moment the job finishes. The result is private to you, disappears by itself after 24 hours, and you can wipe it sooner with one click.
Before you ask
M4V → MP4, answered
01Do I need to install anything to convert M4V to MP4?＋
No. It all happens on this page: choose your file, give it a moment, and the finished MP4 lands in your downloads.
02Will the MP4 look or sound better than the original?＋
Converting changes what your file is compatible with, not how much detail it holds. Nothing can put back what an earlier compression already threw away, so always start from the best copy you have.
03Is there a watermark, a signup or a file cap?＋
None of the three. Your upload is deleted the moment the job finishes, your download stays available for 24 hours, and you can wipe it sooner with one click.
While you are here
People usually need one of these next
JPG → PNG→
Convert JPG to PNG online
JPEG → PNG→
Convert JPEG to PNG online
PNG → JPG→
Convert PNG to JPG online
WebP → PNG→
Convert WebP to PNG online
Or make something bigger
This file could be a whole video.
Cut it, layer it, caption it, put a voice on it and export an MP4 — free, in the same browser tab. Start the editor with your original footage.