WMV to MP4 — No Upload, No Watermark

Why convert WMV to MP4?

WMV files are usually the last survivors of a Windows-only workflow: old training videos, archived presentations, Movie Maker exports. Outside Windows they are effectively locked, and MP4 is the key.

WMV is Microsoft's legacy video format, common in old PowerPoint decks, corporate training archives and Windows Movie Maker exports. Non-Windows players usually can't touch it.

When WMV → MP4 is the right move

Playing archived corporate or training video on a Mac, phone or tablet.
Uploading legacy footage to a modern video platform.
Rescuing old Windows Movie Maker projects and exports.

Quality, size and what changes

The video is re-encoded to H.264 with AAC audio, which is what makes it playable everywhere. Older WMV sources are often low-resolution to begin with, so the conversion preserves what is there rather than improving it.

What you gain with MP4: Plays everywhere, streams well and is hardware-accelerated on virtually all devices.

How it works

Drop your WMV file above and Morphio decodes it locally, then re-encodes it as MP4 using WebAssembly + the browser's native codecs. Nothing is ever uploaded — your files stay on your device. Batch as many files as your machine can handle. See exactly how in-browser conversion works.

WMV to MP4 — frequently asked questions

How do I convert WMV to MP4 without uploading the file?

Open the WMV to MP4 page, drop your video on the drop zone and press convert. Morphio runs an FFmpeg build compiled to WebAssembly that runs inside the page, so the WMV data never leaves your device and no server ever receives a copy.

Does converting WMV to MP4 lose quality?

Audio and video tracks are re-encoded together, so the result stays in sync and plays on standard players. Converting WMV to MP4 only rewrites the container and encoding you asked for — the source file on your disk is never modified.

Is the WMV to MP4 converter free, and how big can the file be?

Yes. The free plan covers 10 conversions a day with files up to 200 MB and adds no watermark or sign-up. Morphio Pro ($5/month, or $29 once for lifetime access) removes the daily cap and raises the per-file limit to 5 GB.

Why won't WMV play on my Mac?

macOS ships no Windows Media decoder. Converting to MP4 removes the dependency entirely.

Can quality be improved?

No conversion can add detail that was never recorded — the MP4 will look like the WMV, only playable.

WMV to MP4 Converter

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