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Supports: HEVC
Most people who land here should stop and reconsider. HEVC (H.265, 2013) is one of the most efficient video codecs in wide use; DivX is the MPEG-4 Part 2 codec from the early 2000s. Re-encoding HEVC to DivX moves your video to a far older, far less efficient codec — the file will usually get bigger at the same quality (or look worse at the same size), and you gain no fidelity, because a lossy-to-lossy re-encode can't restore detail HEVC already discarded. There is exactly one good reason to do it: an old DivX-certified DVD player, set-top box, or legacy editor that only decodes MPEG-4 ASP in an AVI-family container. If your goal is broad modern playback instead, convert HEVC to MP4 (H.264) — universal and more efficient than DivX.
| Property | HEVC (H.265) | DivX (MPEG-4 Part 2 / ASP) |
|---|---|---|
| Codec family | High Efficiency Video Coding | MPEG-4 Part 2, Advanced Simple Profile |
| Standard | ITU-T H.265 / ISO/IEC 23008-2 | ISO/IEC 14496-2 (MPEG-4 Visual) |
| First standardized / released | Approved April 2013, published 2013 | OpenDivX Jan 2001; DivX 4.0 July 2001 |
| Container / extension | Raw .hevc stream, or in MP4/MKV/MOV |
.divx or .avi (AVI-family) |
| Typical paired audio | AAC (in a container) | MP3, sometimes AC-3 |
| Compression efficiency | ~25-50% smaller than H.264 at equal quality | Roughly H.264-minus; far behind HEVC |
| Royalty status | Patent-encumbered (MPEG LA, HEVC Advance, Velos Media) | Long-expired core MPEG-4 ASP patents in practice |
| Native playback | iOS 11+, macOS, modern Android/TVs, Edge/Safari | DivX-certified DVD players, old PCs, legacy editors |
| Best for | Storing 4K/HDR originals, modern devices, small files | Playback on DivX-era hardware that can't decode H.264/HEVC |
.hevc (or .h265) file onto the page, or click "+ Add Files" to browse. Several files can be queued and converted with the same settings..divx output the Video Codec defaults to DivX (MPEG-4 ASP) and the Audio Codec defaults to MP3 — the standard DivX-era pairing. Switch the audio to AC3 under Audio Codec if your player expects Dolby Digital..divx file. No sign-up, no watermark.Usually, yes. HEVC (ITU-T H.265 / ISO/IEC 23008-2, 2013) is built for roughly 25-50% better compression than H.264, and DivX's MPEG-4 Part 2 is older and less efficient still — so to hold the same visual quality, the DivX encode generally needs a higher bitrate and lands as a larger file. If you instead lock a small target size, expect visible quality loss (blockiness in motion). This direction trades efficiency for compatibility with old hardware; if size matters, HEVC to MP4 is the better pick.
No. This is a lossy-to-lossy re-encode: DivX cannot add back any detail the HEVC encode already threw away, and an older codec can only match or degrade the source, never improve it. The honest outcome is "same picture or slightly worse, in a format an old DivX device can play." If you want better-looking output, go back to the original master (camera file, disc rip) rather than re-encoding the HEVC intermediate.
By default the converter pairs DivX video with MP3 audio, the classic DivX-in-AVI combination that DivX-certified players expect. If your target device or receiver wants Dolby Digital, open the Audio Codec dropdown and choose AC3. Both are standard for DivX-era playback; MP3 is the safest default for the widest set of old players.
A few things trip up old players: some only accept the .avi extension rather than .divx, some cap resolution (many SD-era players top out at 720×576 / 720×480), and some require a specific DivX "Home Theater" profile. Try downscaling under Video resolution to a standard-definition preset, keep audio on MP3, and rename the output to .avi if the player ignores .divx. Check the certification logo on the device for the supported profile.
It depends on the box. A genuinely old DivX-certified player that predates H.264 may only decode MPEG-4 ASP — DivX is then your only option. But many "DivX players" from the mid-2000s onward also handle H.264 in AVI or MP4, which gives better quality at the same size. If the device's spec sheet lists H.264/AVC or MP4, prefer HEVC to MP4; fall back to DivX only when the hardware truly won't take anything newer.
Yes, but it won't recover quality — re-encoding an old DivX file to H.265 produces a smaller file at the same (already-degraded) picture, not a better one. See DivX to HEVC for that direction. In our testing, an HEVC clip taken down to DivX and then back to HEVC was visibly softer than the original, because each lossy pass discards a little more detail — so keep your original HEVC master if you ever want a clean re-encode.
No. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion. There is no sign-up, no watermark, and files are never shared or made public.