ASF to XviD Converter

ASF to Xvid Converter

ASF (Advanced Systems Format) is Microsoft's streaming container — the same wrapper used by .wmv and .wma files, usually carrying Windows Media Video and Windows Media Audio. Xvid is not a container at all but an MPEG-4 Part 2 (Advanced Simple Profile) video codec, almost always delivered inside an AVI file. This conversion re-encodes a Windows Media clip into the Xvid codec so it plays on the standalone DivX/Xvid-era hardware players that were common in the 2000s but never learned to read Windows Media.

ASF Format at a Glance

Xvid Format at a Glance

How to Convert ASF to Xvid

1. Upload Your ASF File: Drag and drop your .asf (or .wmv) file onto the page or click "Add Files" to choose it; you can queue several clips and convert them with the same settings.
2. Pick a Quality Preset: The Preset menu defaults to "Very High (Recommended)" — that is the safest choice, since Xvid is less efficient than modern codecs and needs the headroom to avoid blocky artifacts. Lower it only if you must hit a smaller file size.
3. Set Resolution or Trim (Optional): Use "Video resolution" to keep the original or pick a Preset Resolution, and use "Trim" with a Time Range to export only the segment you need.
4. Convert and Download: Click Convert and download the AVI file holding the Xvid stream. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours. No sign-up, no watermark.

Frequently Asked Questions

Will I lose quality converting ASF to Xvid?

Yes — this is a lossy re-encode, not a remux. The WMV/VC-1 stream inside the ASF is fully decoded and then re-compressed with the Xvid (MPEG-4 ASP) codec, so some detail is discarded. Re-encoding can never add detail back, so the output is at best a faithful copy of the source. Choosing the "Very High" preset keeps the loss small enough to be hard to notice on most footage.

Why would I convert to Xvid instead of MP4?

Almost the only good reason is an old standalone DVD or media player that advertises "DivX" or "Xvid Certified" playback but cannot read Windows Media. Xvid (MPEG-4 ASP) is an older, less efficient codec than H.264, so for anything that needs to play on phones, smart TVs, or modern browsers, converting ASF to MP4 gives smaller files at the same quality and far wider compatibility.

What container does the Xvid output use?

AVI. Xvid is a codec, not a file format, and AVI is the container the DivX/Xvid ecosystem standardized on. The result is an .avi file whose video track is Xvid-encoded MPEG-4 ASP, which is exactly what Xvid-certified hardware expects.

Is Xvid the same as DivX?

They are close cousins. Both encode MPEG-4 Part 2 Advanced Simple Profile video, so a player that handles one usually handles the other. The difference is licensing: Xvid is open source under the GNU GPL, while DivX is a proprietary product. Their output is interoperable enough that "DivX/Xvid" is often written as a single category on old player spec sheets.

Can I just convert ASF to AVI without re-encoding?

Not reliably. AVI cannot carry a Windows Media (WMV/VC-1) stream as-is, so the video has to be transcoded to a codec AVI supports — Xvid being the classic choice. If you only need an AVI wrapper and do not specifically need the Xvid codec, the ASF to AVI converter lets you pick the output codec there.

Are my files kept private during conversion?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. There is no sign-up, no watermark, and your files are never shared or made public. In our testing, a one-minute 480p ASF clip converted to an Xvid AVI in a few seconds at the default "Very High" preset.