M4V
M4V Video
Apple's MP4 variant used for iTunes video. Structurally it is nearly identical to MP4.
Commonly used for
iTunes video, Apple TV content
M4V to WEBM Converter
Convert M4V files to WEBM free in your browser — no signup, no install, and the file is never uploaded to a server.
Completely free
Files are never uploaded
No signup required
Drop files or click to select
M4V → WEBM
What changes in this conversion
- WEBM is a newer format — check that the software or device you are sending it to supports it before switching.
- Both M4V and WEBM are lossy, so re-encoding discards a little more picture detail on top of what was already lost. Converting once is fine; repeating it many times is not.
- The picture and sound are re-encoded to H.264 video with AAC audio inside the WEBM container, which is what makes the result play on the widest range of devices.
How to use
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Add your M4V file
Drag the M4V file onto the drop area above, or click it to pick a file from your device. You can add several files at once.
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Confirm WEBM as the output
WEBM is already selected as the output format on this page. You can pick the resolution. Encoding is the slowest part, so smaller resolutions finish sooner.
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Run the conversion
Press the convert button. Video is re-encoded frame by frame on your own machine, so a long clip can take several minutes. The tab has to stay open.
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Download the WEBM file
When it finishes, download the WEBM file. Converting multiple files gives you the option to download them together as a ZIP.
About these formats
WEBM
WebM Video
An open video format created by Google for web streaming. It is royalty-free and compact, making it well suited to website background video.
Commonly used for
Website video, browser streaming
Frequently asked questions
Is converting M4V to WEBM really free?
Yes. M4V to WEBM conversion is completely free with no signup, no watermark, and no daily limit on the free plan for ordinary use.
Are my M4V files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so the M4V file never leaves your device. That is also why it works without an internet connection once the page has loaded.
Will the WEBM file open everywhere?
WEBM is a newer format. Current browsers and phones handle it, but older desktop software may not — keep the original M4V if you have to send it to someone on an old machine.
Is there a file size limit for M4V to WEBM conversion?
The free plan handles files up to 200MB. Because processing happens on your own device, very large files depend on your computer's memory rather than a server quota.
Convert M4V files to other formats
Convert other formats to WEBM
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