Convert WMV to MP4

Windows Media. Universal MP4.

On-device. Instantly.

Drop your video here

or tap to browse

No upload
Works offline
No idea what's in your videos

Need to convert many WMV files? The offline bundle handles batch conversion. $49 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Drop
Drop your WMV file.
02
Convert
fwip converts Windows Media Video to universal H.264 MP4 in your browser.
03
Download
Download the MP4. Compatible with every device, browser, and platform.
// Why this is different

Convert WMV without uploading it.

WMV (Windows Media Video) plays on Windows but is unsupported on Mac, iPhone, and most modern browsers. fwip converts to MP4 entirely in your browser using ffmpeg WebAssembly. Your files stay private.

fwip works differently. The processing engine runs entirely in your browser. Your WMV is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

Use it free in your browser. Own it offline for $15. Convert any legacy video format, anywhere.
// How fwip compares

fwip vs the rest.

fwipCloudConvertKapwingHandBrake
Upload requiredNoYesYesNo (desktop)
Account requiredNoFree tierYesNo
Price$15 / toolFree (25/day) / $9/mo ($108/yr)Free / $24/mo ($288/yr)Free (open source)
Files leave deviceNeverYesYesNo
Works offlineYesNoNoYes
Batch processingOffline bundleYesYesYes
// Questions

Frequently asked.

How do I convert WMV to MP4?▾
Drop your WMV file into fwip. It converts to H.264 MP4 in your browser. Download the result.
Is my WMV file uploaded?▾
No. Conversion runs entirely in your browser using ffmpeg WebAssembly. Your file never leaves your device.
Why won't WMV play on Mac or iPhone?▾
WMV is a proprietary Microsoft format. Apple devices do not support WMV natively. Converting to MP4 (H.264) gives you a format that plays everywhere.
Will quality be preserved?▾
fwip re-encodes at high quality settings. Most WMV files convert cleanly to H.264 MP4 with no perceptible quality difference.
Can I convert old Windows Movie Maker videos?▾
Yes. Windows Movie Maker exported WMV files — fwip converts them to modern MP4 that plays on all devices.
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Like it? Own it.

Offline. No browser. No internet. No excuses.
$15
This tool
  • WMV to MP4 · offline
  • Batch processing
  • No file size limit
  • 3 devices · one payment
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$49
Video bundle
  • All video tools · offline
  • Batch processing
  • No file size limit
  • 3 devices · one payment
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$99
Complete suite
  • All 200+ tools · offline
  • No file size limit
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One-time payment · 3 devices · Updates included · Mac + Windows + Linux