Convert WMV to MP4
Make Windows Media videos play on Mac, iPhone, Android and the web.
Files are processed on our server in Europe. Download links expire after 60 minutes; files are then deleted automatically.
Why use Video Compressor
Private and secure
Your video is sent over an encrypted connection to our server in Europe and stored under a random ID. It is never shared with third parties or used to train AI. Download links expire after 60 minutes; files are then deleted automatically, normally within 75 minutes. Read the privacy policy
Honest results
Choose quality and resolution. Progress comes from the encoder itself, and the result shows the exact size of your MP4 next to the original.
Free, no sign-up
Video Compressor is free with no account, no watermark and no ads. It works in any modern browser on phone or desktop.
In short
WMV to MP4 converts Windows Media Video files (WMV 7, 8 and 9, and VC-1) in WMV or ASF containers into MP4 with H.264 video and AAC audio. Copy-protected (DRM) files can't be converted. Files up to 1 GB and 30 minutes are supported.
| Accepted formats | MP4, MOV, M4V, 3GP, WebM, MKV, AVI, WMV, FLV, MPEG, MTS/TS, OGV |
|---|---|
| Maximum file size | 1.00 GB |
| Output | MP4 (H.264 video, AAC audio), max 1080p, never upscaled |
| Video limits | Up to 30 minutes, up to 4K input |
| Target size | Not on converter pages; the video compressor sets target sizes |
| Units | 1 KB = 1,000 bytes; 1 MB = 1,000,000 bytes |
| Where files are processed | On our server in Europe; not sent to third parties |
| Retention | Download link expires after 60 minutes; files deleted automatically, normally within 75 minutes |
| Price | Free, no account, no watermark |
| Typical sources | Windows Movie Maker projects, old Windows screen and webcam recordings, corporate training videos |
| Codecs read | WMV7, WMV8, WMV9 and VC-1 video; Windows Media Audio |
How to use it
- Choose or drop your WMV file (up to 1 GB, 30 minutes), or import it from a link.
- Keep the High quality preset, or pick a lower resolution if you also want a smaller file.
- Select Convert to MP4 and keep the tab open while it uploads and converts.
- Preview the MP4 and download it.
Why convert WMV to MP4?
WMV was Microsoft's video format for Windows Media Player and Movie Maker. macOS, iPhone and most Android phones can't play it without extra software, and many upload forms reject it. MP4 with H.264 plays everywhere.
Protected and screen-codec WMV files
WMV files bought or rented from online stores were often protected with Windows Media DRM; those can't be converted. Files recorded with the Windows Media Screen codec are also reported as unsupported.
Questions
Is WMV to MP4 conversion lossless?
No. The video is re-encoded to H.264, which is lossy, but converter pages start at the High quality preset, where the difference is hard to see at normal viewing size. The picture is never upscaled, and the shorter side is capped at 1080 pixels.
Does it work with ASF files?
Yes. ASF is the container WMV uses, so .asf video files are detected and converted the same way.
What happens to my file after conversion?
It's stored under a random ID on our server in Europe. The download link expires after 60 minutes and the file is then deleted automatically, normally within 75 minutes. Canceling deletes it immediately.
Convert other formats to MP4
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- Video compressorMake any video smaller, with a target size.
Last reviewed October 31, 2026.