AV1 to XviD Converter

AV1 to Xvid — Should You Convert, and What Do You Get?

AV1 is the modern, royalty-free AOMedia codec (bitstream spec 1.0.0 published June 2018) built for efficient web and 4K streaming. Xvid is the open-source MPEG-4 Part 2 (Advanced Simple Profile) codec from the early 2000s, the GPL cousin of DivX that became popular for fitting movies onto a single CD. Convert AV1 to Xvid for one specific reason: a standalone DVD player, car head unit, or set-top box badged "Xvid" or "DivX Certified" that won't decode AV1. This is a modern-to-legacy downconvert — the file gets larger, not smaller, and you won't regain any quality. For anything made in the last decade, AV1 to MP4 (H.264) is the better target.

AV1 vs Xvid — Side by Side

One thing to get straight first: Xvid is a codec, not a container. The output here is Xvid video with MP3 audio wrapped in an AVI file (the pairing DivX/Xvid-certified hardware most reliably reads), written with a .xvid extension.

When to Convert AV1 to Xvid

• You have a 2003-2012 DVD player, car stereo, or media box badged "DivX Certified" or "Xvid" that rejects AV1 and MP4.
• You want to burn clips to a CD-R or data DVD that an old set-top box will read as Xvid/DivX files.
• You need a royalty-free MPEG-4 codec for an offline kiosk or legacy software that predates AV1 and can't use H.264.

When to Stay on AV1 (or Go to MP4 Instead)

• Your target is a phone, browser, smart TV, or anything from the last decade — use AV1 to MP4 for a smaller file with near-universal playback.
• You care about file size or streaming bandwidth — Xvid undoes AV1's whole efficiency advantage and produces a much larger file.
• The AV1 already plays fine on your device — re-encoding only adds a lossy generation with no upside.

How to Convert AV1 to Xvid

1. Upload Your AV1 File: Drag and drop your AV1 video onto the page or click "Add Files". AV1 streams are usually carried inside an MP4, MKV, or WebM container, and batch upload applies the same Xvid settings to every file.
2. Pick a Compression Method: Under File Compression the default is Quality Preset set to Very High (Recommended). Switch to Specific file size to hit an exact MB number for a CD-R fill, Constant Bitrate for predictable per-minute size, or Variable Bitrate to spend more bits on busy scenes. For certified hardware, roughly 1,000-2,000 kbps is a safe range.
3. Set Resolution and Trim (Optional): Use Keep original to leave the size alone, Resolution Percentage to scale, or Preset Resolutions to pick a target — standalone players generally cap at 720×576 (PAL) / 720×480 (NTSC), so downscale anything larger. Use Trim → Time Range to drop intros before encoding.
4. Convert and Download: Click "Convert". Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours. Download each Xvid AVI individually or as a ZIP — no sign-up, no watermark.

Frequently Asked Questions

Why won't my AV1 file play on my DVD player?

A DivX/Xvid certification means the player decodes the MPEG-4 Part 2 family — it predates AV1 by more than a decade and has no AV1 decoder in hardware or firmware. AV1 is a completely different codec family from 2018, so an old certified player rejects it outright. Re-encoding to Xvid video with MP3 audio at 720×576 or below gives the player exactly what its certification covers.

Will the file get smaller converting AV1 to Xvid?

No — it usually gets noticeably larger. AV1 is one of the most efficient codecs in production (roughly 46-50% more efficient than H.264, and Xvid is two generations older than H.264). Xvid needs a much higher bitrate to reach the same visual quality, so the Xvid output is bigger than the AV1 input. You can cap the result with Specific file size, but pushing the bitrate too low on Xvid shows blocking and pixelation faster than AV1 would.

What's the difference between Xvid and DivX for my player?

Both are MPEG-4 Part 2 Advanced Simple Profile, so most certified players read either off the same chip. The practical difference is licensing — Xvid is GPL open-source software, while DivX is a proprietary product from DivX, LLC. Certified hardware checks the FourCC tag inside the AVI rather than the extension; if a player accepts only DivX, AV1 to DivX produces the DivX-codec equivalent. Some fussy players also accept an Xvid file once its FourCC is changed to DIVX or FMP4.

Does the Xvid output go in an AVI container?

Yes. Xvid is a codec, so the video is wrapped in an AVI container with MP3 audio and written with a .xvid extension. Certified players read the Xvid/DivX FourCC tag inside the file, so it plays the same whether the extension reads .xvid or .avi. If a particular player is fussy about the extension, renaming the download to .avi is harmless and doesn't touch the data.

Will I lose quality, and can I get it back later?

Any lossy-to-lossy re-encode loses some information, and AV1 → Xvid is no exception — the Xvid output inherits every artifact already in the AV1 plus whatever the new encode adds. You can't convert Xvid back to AV1 and recover the lost detail; re-encoding never adds information. Keep your original AV1 as the master and treat the Xvid copy as a playback-only version for old hardware.

What file size should I expect?

In our testing, a 1080p 60-second AV1 clip at roughly 3 Mbps re-encoded to Xvid at the default Very High preset produced a file around 40-55 MB — larger than the AV1 source because MPEG-4 ASP needs more bitrate for the same quality. Using Specific file size lets you target an exact result, handy for packing several clips under a 700 MB CD-R or a 4.7 GB data DVD.

Should I use Xvid at all, or just convert AV1 to MP4?

Xvid only makes sense if you have a specific DivX/Xvid-certified player you can't replace — a 2005-era DVD deck, a car head unit, an offline kiosk. For anything modern, AV1 to MP4 with H.264 plays on virtually every phone, TV, and browser and compresses far better than Xvid. To convert an existing Xvid file forward to a modern format, see Xvid to MP4.