ASF to MOV converter
Convert ASF to MOV 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 MOV, add the ASF file to the iHateFiles ASF to MOV 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. MOV is not.
Should you convert ASF to MOV?
A safe conversion: ASF and MOV are both lossless, so this is a change of container rather than a change to the picture.
Nothing is discarded
ASF and MOV 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 MOV side by side
| ASF | MOV | |
|---|---|---|
| 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 MOV. A MOV recorded on an iPhone is usually H.264 or HEVC and plays anywhere. A MOV exported from an editor may be ProRes, ten times larger, and rejected by the same places.
How to convert ASF to MOV
- Add your ASF file. It is read from your disk and stays there.
- Check the settings. The output format is already set to MOV.
- Press convert and the MOV file is saved back to your device.
Questions
How do I convert ASF to MOV?
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 MOV 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 MOV lose quality?
MOV 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.