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Supports: DIVX
.divx extension. DivX-encoded movie rips, recorded TV episodes from the 2000s, camcorder exports, and home-burned video CDs all work. The video stream is discarded automatically and only the audio is decoded and re-encoded as MP3. Batch upload is supported.DivX is an MPEG-4 Part 2 Advanced Simple Profile (ASP) video codec that started as a hacked Microsoft MPEG-4 v3 release in 1998 and was rebuilt as the official DivX 4 codec in 2001. Through the 2000s, "DivX Certified" became a logo on millions of DVD players, set-top boxes, car head units, and portable media devices — over 1.7 billion DivX-enabled devices shipped during that era. DivX AVI files almost always carry MP3 stereo or AC3 stereo/5.1 audio inside. Pulling that audio out as a standalone MP3 is the most universal way to keep listening to the content on modern phones, cars, and audio players. Common reasons:
If your file actually has an .avi extension instead of .divx, use AVI to MP3 — it accepts any AVI file regardless of the inner video codec. For Xvid-tagged files (the open-source MPEG-4 ASP sibling), use Xvid to MP3.
| Property | DivX (source) | MP3 (output) |
|---|---|---|
| Type | Video codec (MPEG-4 Part 2 ASP) | Audio codec (MPEG-1/2 Audio Layer III) |
| Released | 1998 (DivX 3.11 alpha) / 2001 (DivX 4) | 1993 (Fraunhofer / ISO MPEG-1) |
| License | Proprietary (DivX, LLC) | Patents expired 2017, royalty-free |
| Carries video | Yes | No — audio only |
| Typical container | .avi (also .divx, .mkv) | .mp3 standalone |
| Audio inside | MP3 stereo or AC3 stereo/5.1 | N/A |
| Typical file size | 350 MB - 1.5 GB per movie | 30-90 MB for the same audio |
| Universal device support | Limited — DivX-certified hardware only | Plays on virtually every device made since 1998 |
| Bitrate | File size (per minute) | Best for | Audible vs source |
|---|---|---|---|
| 64 kbps mono | ~0.5 MB | Audiobooks, lectures, voice memos | Speech transparent |
| 96 kbps stereo | ~0.7 MB | Talk radio, podcasts | Mostly transparent for speech |
| 128 kbps stereo | ~1 MB | Casual music, default | Standard quality |
| 192 kbps stereo | ~1.4 MB | General music, matches typical DivX AVI source | Mostly transparent |
| 256 kbps stereo | ~1.9 MB | Quality music distribution | Effectively transparent |
| 320 kbps stereo | ~2.4 MB | Maximum MP3 quality | Audibly identical for most listeners |
DivX files almost always carry MP3 stereo at 128-192 kbps or AC3 stereo/5.1 at 192-448 kbps. Match or exceed the source: extract at 192 kbps if the original was MP3 128 kbps, or at 256-320 kbps if the source was AC3, to avoid stacking lossy compressions. For dialogue-only or lecture content, 96-128 kbps mono is plenty and produces a much smaller file.
It depends on what was inside the DivX file. If the source audio was already MP3 (very common in scene rips), you're re-encoding lossy-to-lossy and will lose a small amount of fidelity at lower bitrates — extract at 256-320 kbps to keep the loss inaudible. If the source was AC3, expect a slightly more noticeable change because AC3 and MP3 use different psychoacoustic models. For a true 1:1 archive, convert to DivX to WAV instead — WAV is uncompressed PCM and adds no further loss.
Yes. Use the Trim section to enter a Start Time and Duration. Both fields accept seconds (12.5) or HH:MM:SS.sss format (00:01:30.500). This is useful for grabbing one song from a concert AVI, the dialogue from a single scene, or the few minutes of a long lecture you actually need without re-encoding the full file.
Variable Bitrate (VBR) generally produces better quality at the same average file size — the encoder spends more bits on complex music passages and fewer on silence. The MP3 VBR ranges (45-85 kbps low through 220-260 kbps high) give predictable quality bands. Pick Constant Bitrate (CBR) only if a downstream device or streaming setup specifically requires a fixed bitrate; otherwise VBR at the 170-210 kbps band is the sensible default for music.
This page accepts files with the .divx extension specifically. If your file has the standard .avi extension — which is by far the most common case for DivX videos — use AVI to MP3 instead. That tool reads the DivX stream inside the AVI container without you needing to know which video codec was used.
Yes. When the source DivX has AC3 5.1 surround audio, the converter downmixes the six channels to standard stereo before MP3 encoding. The center channel and LFE are folded into the left/right pair, and the rear channels are blended in at a lower level. The result plays correctly on any stereo device, though directional surround information is necessarily lost — MP3 itself supports two-channel stereo, not surround.
For music, keep the Audio Sample Rate at 44100 Hz (CD quality) or 48000 Hz (matches most DivX AVI sources). For voice-only material — lectures, sermons, audiobooks — 22050 Hz or 16000 Hz mono is enough and trims file size further. If unsure, leave both Audio Channel and Audio Sample Rate at "Original" and the converter inherits whatever the source AVI used.
Yes. Drop in multiple files at once and each converts in parallel within your browser session. Output downloads as individual MP3 files or as a single ZIP — useful for archiving an entire DivX-encoded TV season, a folder of recorded conference talks, or a stack of fan-rip movie soundtracks in one pass.
No. MP3 is an audio-only format, so the video stream is discarded during conversion. Only the audio track is decoded and re-encoded as MP3. If you need to keep the video, run a separate conversion to a video output — for example DivX to MP4 — and pull the audio out separately.