WMV to MP4 — in your browser
WMV is Microsoft's old Windows Media format. Macs can't play it without VLC. iPhones flat-out refuse. Drop a .wmv here for a universal MP4. Nothing uploads.
drop a .wmv file here
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WMV in 2026
WMV (Windows Media Video) was Microsoft's video codec, paired with the ASF container. Files end in .wmv or .asf. From the early 2000s to the mid-2010s it was the default Windows recording and screen-capture format. Camtasia, Microsoft Office, and old PowerPoint exports all produced WMV.
The format is no longer the Windows default and has spotty support outside Windows. Mac users need VLC. iOS and Android won't play WMV at all. Premiere can usually import it but DaVinci Resolve often won't. Re-encoding to MP4 (H.264 + AAC) fixes all of this.
Where WMV files come from
- Microsoft PowerPoint exports (pre-2016).
- Old Camtasia / TechSmith screen recordings.
- Webcam recordings on Windows Movie Maker.
- Corporate training video archives.
- Personal archives from Windows XP / Vista / 7 era.
How conversion works in your browser
We decode the WMV (or ASF) stream and re-encode to H.264 + AAC inside an MP4 container. Quality is near-lossless at the High preset. The output plays on every modern device.
Privacy
Old WMV files often contain personal recordings — family video, training material, internal demos. Browser-only conversion keeps the file on your machine instead of routing through a converter company's server.
FAQ
Will WMV9 / WMV3 files convert?
Yes — FFmpeg handles all WMV versions.
What about DRM-protected WMV?
DRM-locked WMV won't convert. The browser can't decrypt protected media. Most personal WMV files are not DRM'd.
I'm on a Mac. Will this work?
Yes — the whole point. Browser-only conversion means platform doesn't matter. Same workflow on Mac, Linux, Chromebook.
Does the file get uploaded anywhere?
No. Disconnect after loading the page to verify.