AVI to ASF - Online Video Converter
Convert AVI to ASF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About AVI to ASF
Convert AVI to ASF. AVI is Microsoft's 1992 RIFF container, often holding DivX or DV video. ASF is Microsoft's streaming container that usually wraps WMV and WMA. Live-archive headers can confuse players; remuxing usually repairs them..
Why convert AVI to ASF?
- Smaller files with ASF lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
AVI vs ASF
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | AVI is Microsoft's 1992 RIFF container, often holding DivX or DV video. | ASF is Microsoft's streaming container that usually wraps WMV and WMA. |
When not to convert AVI to ASF
- Skip ASF for archival masters: lossy compression discards detail, so keep the AVI original.
- Keep a master copy: repeated exports stack small losses, so archive AVI before batch ASF shares.
Limits
Starting point: AVI - AVI is Microsoft's 1992 RIFF container, often holding DivX or DV video. Old codecs inside may need transcoding before modern players open them. Live-archive headers can confuse players; remuxing usually repairs them. Encode ASF (WMV2 / WMA) from AVI 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.