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MP4 to WMV - Online Video Converter
Convert MP4 to WMV online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MP4 to WMV
Drop MP4 video here or click to select
MP4
WMV (WMV2 / WMA)
About MP4 to WMV
Convert MP4 to WMV. MP4 pairs H.264 video with AAC audio in the ISO base media container. WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. Protected store files cannot be converted; use DRM-free sources..
Why convert MP4 to WMV?
- Smaller files with WMV lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
MP4 vs WMV
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | MP4 pairs H.264 video with AAC audio in the ISO base media container. | WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. |
When not to convert MP4 to WMV
- Skip WMV for archival masters: lossy compression discards detail, so keep the MP4 original.
- Keep a master copy: repeated exports stack small losses, so archive MP4 before batch WMV shares.
Limits
Starting point: MP4 - H.264 video with AAC audio in one file. H.264 has no alpha channel, so transparency is dropped. Protected store files cannot be converted; use DRM-free sources. Encode WMV (WMV2 / WMA) from MP4 at a bitrate near the source, and confirm the audio track before converting.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert MP4 to WMV?
Drop your MP4 file onto this page, choose quality and codec settings, then click Convert. The result downloads as WMV instantly. All processing runs in your browser.
What codec is used for WMV?
The default codec for WMV is WMV2 / WMA. You can change the video and audio codec in Advanced mode.
How do you store my files?
We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.