WMV to ASF - Online Video Converter
Convert WMV to ASF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About WMV to ASF
Convert WMV to ASF. WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. ASF is Microsoft's streaming container that usually wraps WMV and WMA. Live-archive headers can confuse players; remuxing usually repairs them..
Why convert WMV to ASF?
- Smaller files with ASF lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
WMV vs ASF
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. | ASF is Microsoft's streaming container that usually wraps WMV and WMA. |
When not to convert WMV to ASF
- Skip ASF for archival masters: lossy compression discards detail, so keep the WMV original.
- Keep a master copy: repeated exports stack small losses, so archive WMV before batch ASF shares.
Limits
Starting point: WMV - WMV pairs Microsoft's WMV video with WMA audio in an ASF wrapper. Protected store files cannot be converted; use DRM-free sources. Live-archive headers can confuse players; remuxing usually repairs them. Encode ASF (WMV2 / WMA) from WMV 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.