DivX to AVI Converter

DivX to AVI: Why This Conversion Exists

DivX is a codec; AVI is a container. Those are different layers of the stack, which is why "convert DivX to AVI" sounds odd once you know the terminology — a DivX video almost always lives inside an AVI file already. The .divx extension comes from the DivX Media Format, introduced with DivX 6, which DivX built as an extension to the AVI file format, storing its extra features in RIFF headers. So what you have is an AVI wearing a different name. This page exists for the very real situation where a program, a hardware player or an upload form refuses the .divx name and demands an unambiguous .avi — and it re-encodes cleanly rather than just relabelling.

How to Convert DivX to AVI

1. Upload Your DivX File: Drag and drop your .divx file or click to browse. Several files can be queued and run with identical settings; each is uploaded over an encrypted connection.
2. Check the Video Codec and Audio Codec: Video Codec defaults to MPEG-4 and Audio Codec to MP3 — the pairing a classic AVI rip already uses, which keeps the conversion close to the source. Twenty-one video codecs and sixteen audio codecs are available if you want something else, from Xvid and MS MPEG-4 through H.264, H.265 and AV1.
3. Set the Compression Mode, Resolution or Trim (Optional): File Compression starts on Quality Preset at "Very High (Recommended)". Switch to Specific file size, Constant Bitrate, Variable Bitrate, Constant Quality or Constraint Quality to control the size-versus-detail trade directly. Video resolution stays on Keep original, and Trim takes a Start time and Duration.
4. Convert and Download: Click Convert and take the .avi. It opens in VLC, Windows Media Player and anything else that reads AVI. No sign-up, no watermark.

What Changes and What Doesn't

The container changes to an unambiguous AVI, and the video is genuinely re-encoded — the server always decodes and re-compresses, there is no byte-for-byte stream copy. Three ways that plays out:

• You need the file accepted as .avi. This is the normal case and it works. The output is a plain AVI with a standard MPEG-4 Part 2 video stream and MP3 audio. We checked the default result: it probes as MPEG-4 video carrying the FMP4 FourCC alongside an MP3 track inside an AVI container.
• You only want the name changed. If a player is complaining purely about the extension, renaming movie.divx to movie.avi on your own machine sometimes works, because the bytes underneath are already an AVI stream. It is unreliable — some software validates the RIFF headers and the DivX Media Format's extra chunks — so use the converter when you need the result to be predictable.
• You want a smaller or better file. AVI will not deliver that. It is a 1992 container with real structural limits, and MPEG-4 Part 2 is a 1999-era compression standard. Converting to a modern codec in a modern container is the conversion that actually saves space.

One thing to plan for: AVI cannot carry attachments, so subtitle tracks and fonts do not survive. If your source has soft subtitles, they must be kept as a separate sidecar file or burned into the picture beforehand, because the container has nowhere to put them.

AVI Format at a Glance

Which Video Codec to Put in the AVI

Frequently Asked Questions

Is a .divx file already an AVI file?

Essentially, yes. DivX is the codec and AVI is the container it normally rides in, which is why most DivX videos you encounter already carry the .avi extension. The separate .divx extension belongs to the DivX Media Format introduced with DivX 6, which was deliberately designed as an extension to the AVI file format — its menus, chapters and multiple-track features are stored in RIFF headers alongside the ordinary AVI structures. Converting is best understood as normalising the file into something strict software will accept without argument.

Does this conversion re-encode, or is it lossless?

It re-encodes. The video is decoded and compressed again to the AVI default of MPEG-4 Part 2 video with MP3 audio, which is one lossy generation. Because the source is also MPEG-4 Part 2, the encoder is not translating between fundamentally different compression schemes, so keeping the Quality Preset on "Very High (Recommended)" and leaving the resolution alone makes the difference genuinely hard to see. There is no stream-copy option here, so if you truly need zero re-encoding, renaming the file on your own computer is the only route.

Why is my AVI larger than the DivX I started with?

Because the "Very High" preset optimises for picture quality, not for matching the original file size, and your source rip may have been squeezed hard to fit a disc. MPEG-4 Part 2 also has modest efficiency by modern standards, so a generous quality setting can easily overshoot. Use Specific file size to cap the output at a number you choose, or Constant Bitrate to pin the data rate. If size is the real goal, converting to a modern codec will beat any setting available in an AVI.

Can I keep the DivX or Xvid codec specifically?

You can pick either by name in the Video Codec list. Xvid is a genuinely different encoder and tags its stream with the xvid FourCC, which is what a player looking for Xvid expects to see. The DivX entry produces MPEG-4 Part 2 too, from the same encoder as the MPEG-4 entry, so it will not stamp a DX50 FourCC on the file — if some old hardware profile is specifically sniffing for that tag, this converter is not the tool that will satisfy it. For a dedicated route, DivX to Xvid targets the Xvid encoder directly.

My source file ends in .avi, not .divx — can I still use this page?

This page accepts the .divx extension. Since most DivX videos already end in .avi, the more useful starting point for those is an AVI-source page: AVI to MP4 reads the DivX or Xvid stream inside the AVI regardless of the inner codec and gives you a genuinely more compatible result. Renaming an .avi to .divx just to force it through this page is not worth doing.

Will subtitles survive the conversion?

Soft subtitles will not, because AVI has no mechanism for them — the container cannot hold attachments such as subtitle tracks or fonts, which is why subtitled AVI releases have always shipped a separate .srt or .sub file. Subtitles already burned into the picture are part of the video frames and come through unchanged. If keeping selectable subtitles matters, a container built for them, such as MKV or MP4, is the right destination.

Why do some devices still refuse the AVI?

Because the objection was never really about the .divx extension. Plenty of smart TVs, phones and browsers do not support AVI at all — it is a Microsoft container from 1992 whose structure is awkward for modern codecs, and hardware vendors have quietly dropped it. If your device rejects the converted AVI too, no AVI setting will fix it; convert to DivX to MP4 instead, which modern hardware decodes natively.

Should I convert to AVI or to MP4?

Convert to AVI when a specific program, capture card, editing suite or legacy player insists on an AVI container — that is a genuine and common requirement, and it is what this page is for. Convert to MP4 for anything else. MP4 with H.264 plays on phones, browsers, televisions and current editors, produces a smaller file at the same visual quality, and does not carry AVI's structural limitations around B-frames, timecode and attachments.

What happens to my file after the conversion?

It is uploaded over an encrypted connection, converted on our servers, and deleted automatically after a few hours. Nothing is shared or made public, there is no account to create, and the download has no watermark. Copy-protected commercial discs cannot be processed by any online converter, because the protection has to be dealt with before the video becomes a file at all.