DivX to WebM Converter

Convert DivX to WebM Online

Rescue an old DivX rip into WebM, the open, royalty-free video format built for the modern web. DivX is the early-2000s MPEG-4 Part 2 (ASP) codec from the DVD-rip era — most DivX files are .avi or .divx clips that no longer play inline in a browser or on a phone. WebM does: it plays natively across current browsers and embeds cleanly in HTML5 <video>, so it's the right target for putting legacy footage on a web page or into a self-hosted media server. This is a re-encode from an older codec to VP9, not an upscale — the output can match your source but won't look sharper than a 2000s DivX file ever did.

How to Convert DivX to WebM

1. Upload Your DivX File: Drag and drop your .divx or .avi file, or click "+ Add Files" to browse. Batch upload is supported — the same settings apply to every file.
2. Pick the Quality Preset: Open Advanced Options. The default is Quality Preset at "Very High (Recommended)", which keeps the result visually close to the source; switch to Constant Quality or Constraint Quality for finer per-frame control, or set a Specific file size to cap the output.
3. Set Codecs and Resolution (Optional): The output uses the VP9 video codec and Opus audio by default — leave these for the best size-to-quality balance, or pick VP8 (wider on very old players) or AV1 (smaller, slower) under Video Codec. Leave Video resolution on "Keep original" or cap it with a Preset Resolution; aspect ratio is preserved.
4. Convert and Download: Click "Convert" and download your WebM file. No sign-up, no watermark.

DivX (Source) vs WebM (Output)

Frequently Asked Questions

Will converting DivX to WebM lose quality?

Some, yes — this is a full re-encode, not a remux. Your DivX video uses the MPEG-4 Part 2 codec, which has no compatibility with WebM's VP9, so every frame is decoded and re-compressed. That second lossy pass discards a little detail, just as the original DivX rip already did. Keeping the default Quality Preset at "Very High" minimizes the visible loss. One thing it can never do is improve on the source: a soft, low-bitrate 2000s DivX rip will look the same or slightly softer as WebM, never crisper. In our testing, a 480p DivX clip re-encoded to VP9 at the default preset was visually indistinguishable from the source at normal viewing distance while landing noticeably smaller on disk.

Why convert an old DivX file to WebM at all?

Because DivX doesn't play inline on the modern web and WebM does. A .divx or .avi file won't load in a browser <video> tag or open on most phones without a third-party player like VLC, which makes it a dead end for embedding old footage on a web page, in a wiki, or on a self-hosted media server. WebM was built by Google in 2010 specifically for HTML5 and plays natively across current browsers. Converting also tends to shrink the file, since VP9 is a far newer codec than MPEG-4 Part 2. If your goal is maximum device support rather than the open web specifically, DivX to MP4 (H.264) plays on even more hardware, including older smart TVs and set-top boxes.

Should I choose VP9, VP8, or AV1 for the WebM?

VP9 is the default and the right pick for almost everyone — it's well-supported in every browser that plays WebM and gives a good size-to-quality balance. Choose VP8 only if you're targeting a very old player or library that predates VP9 support; it's less efficient, so files come out larger. Choose AV1 if you want the smallest possible file and don't mind a slower encode — AV1 compresses more tightly than VP9 but takes longer to process and is newer, so support on older devices is thinner. For a DVD-rip-era DivX source, the gains from AV1 are real but modest, because you can't compress detail the original never captured.

What happens to the audio in my DivX file?

It's re-encoded too. A DivX .avi usually carries MP3 or AC-3 audio, neither of which WebM allows in its container, so the soundtrack is decoded and re-encoded to Opus (the default) or Vorbis. Opus is the modern choice and sounds transparent at typical bitrates. Like the video, this is a lossy re-encode, so it can't add fidelity the original audio lacked — but at default settings the difference is inaudible for ordinary dialogue and music from a DVD rip.

My DivX file won't upload or convert — what's wrong?

Two common causes. First, long or high-resolution DivX rips make large uploads, and the real limit here is upload size and time, not the conversion itself — trim the source or cap the Preset Resolution first to keep the transfer manageable. Second, some .divx files are DRM-protected DivX Media Format containers from purchased downloads; those can't be decoded and re-encoded. A plain .avi or .divx MPEG-4 Part 2 rip converts without issue. If you have a stack of old AVI files to modernize, AVI to MP4 handles the same source footage for broad device playback. Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.