Free online DIVX to WEBM converter

A browser-based player, HTML5 video element, or modern editing workflow may reject a legacy DivX file. Converting it to WebM creates a web-oriented file without requiring viewers to install DivX codec support; 101convert.com can perform the conversion online without software installation.

What the DIVX format is

DIVX usually identifies video encoded with the DivX implementation of MPEG-4 Part 2. The video is commonly stored in an AVI-based container with a .divx or .avi filename extension, although the extension alone does not identify the codec. DivX was widely used for downloaded, shared, and DVD-ripped video during the 2000s, and was played with DivX Player or desktop applications that included legacy MPEG-4 codec support.

A DivX file is not normally converted by renaming its extension. The DivX video must be decoded and re-encoded with a codec supported by WebM.

What the WEBM format is

WebM is an open media container designed primarily for web playback. Common WebM files contain VP8 or VP9 video with Vorbis or Opus audio; AV1 video is also supported by current WebM specifications and software. Current browsers and many HTML5 players support WebM without browser plugins.

VP9 and AV1 can produce smaller files than DivX at comparable visual quality, but they require a new lossy encode and may take longer to process. WebM is not universally accepted by older televisions, hardware players, or video-editing applications, so keep the original file if it is needed for archival recovery.

Convert with 101convert.com

1. Open the DIVX-to-WEBM converter on 101convert.com.
2. Upload the file with its .divx or .avi extension.
3. Choose WEBM as the output format and start the conversion.
4. Download the generated .webm file when processing finishes.

Online conversion is useful when installing desktop software is not practical. Upload limits, processing time, and supported input details can vary, so retain the source file until the output has been checked.

Convert with FFmpeg

FFmpeg is the most controllable desktop option for this conversion and runs on Windows, macOS, and Linux. Install a current build, open a terminal or command prompt in the source folder, and run:

ffmpeg -i "input.divx" -c:v libvpx-vp9 -crf 32 -b:v 0 -c:a libopus -b:a 96k "output.webm"

This command decodes the source, encodes VP9 in constant-quality mode, converts the audio to Opus, and writes output.webm. Lower -crf values increase quality and file size; values around 28–36 are a practical starting range, but the best setting depends on the source. The command preserves the input frame size and frame rate because no scaling or frame-rate filter is specified.

To create a 720-pixel-high version for web delivery, add a scale filter:

ffmpeg -i "input.divx" -vf "scale=-2:720" -c:v libvpx-vp9 -crf 32 -b:v 0 -c:a libopus -b:a 96k "output.webm"

If the target player requires Vorbis instead of Opus, replace the audio options with:

-c:a libvorbis -q:a 5

FFmpeg builds differ in the encoders they include. If libvpx-vp9, libopus, or libvorbis is reported as unavailable, install a build containing those encoders or choose an available compatible codec.

Quality and compatibility checks

Changing DivX to WebM is a lossy re-encode; the original compressed video cannot be recovered, and repeated conversions accumulate additional artifacts. Inspect the result for blockiness, soft detail, audio synchronization, cropping, and playback in the browser or application that will use it.

Interlaced sources may need deinterlacing, damaged frames may cause FFmpeg warnings or shortened output, and unusual variable-frame-rate files can expose timing problems. WebM also does not carry every feature supported by AVI, so uncommon subtitle, metadata, or audio streams may be omitted or require separate conversion. Keep the original DIVX file when preservation matters.