ASF to AVI converter
Convert ASF to AVI in seconds, free and unlimited. No upload, no sign-up, no watermark: your video never leaves your device.
Last updated
Quick answer: To convert ASF to AVI, add the ASF file to the iHateFiles ASF to AVI converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. ASF is a format most software has stopped opening. AVI is not.
Should you convert ASF to AVI?
A safe conversion: ASF and AVI are both lossless, so this is a change of container rather than a change to the picture.
Nothing is discarded
ASF and AVI are both lossless, so every pixel survives the move intact. Convert back and forth as often as you like; the image does not degrade.
ASF and AVI side by side
| ASF | AVI | |
|---|---|---|
| Compression | Lossless | Lossless |
| Transparency | No | No |
| Animation | No | No |
| Written here | No | Yes |
What usually goes wrong
About the ASF. ASF, WMV and WMA all share the same file signature, so identifying which one you have means looking at the streams inside rather than the first few bytes.
About the AVI. Audio drifting out of sync partway through an AVI is common, because the container assumes a fixed frame rate that the source did not actually have. Re-encoding to MP4 corrects the timing.
How to convert ASF to AVI
- Add your ASF file. It is read from your disk and stays there.
- Check the settings. The output format is already set to AVI.
- Press convert and the AVI file is saved back to your device.
Questions
How do I convert ASF to AVI?
Open this page, add your ASF file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this ASF to AVI converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to AVI lose quality?
AVI is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several ASF files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.