AutoGK (Auto Gordian Knot) 2.55

The last release, version 2.55, shipped on January 26, 2009, and the project has received no further updates in the seventeen years since.

It still works on modern Windows for the narrow set of jobs it was designed to do, but anyone starting a new DVD ripping workflow today should read the alternatives section below before installing it.

Why AutoGK Still Gets Downloaded

For a frozen tool, AutoGK retains a surprisingly loyal audience.

The reason is the workflow it pioneered: point it at a DVD, pick a target file size, and walk away.

AutoGK wraps VirtualDub, AviSynth, DGMPGDec, VobSub, and the Xvid Video Codec into a single dialog that auto-detects the audio track, picks resolution, handles inverse telecine, deinterlaces when needed, and splits the output into CD-sized chunks.

That zero-decision experience is the appeal - and the reason users keep returning to a 2009-era binary instead of learning a modern encoder.

What It Actually Does

AutoGK accepts DVD discs, ripped VOB folders, HDTV captures, MPEG-2 transport streams, and DVB recordings as input. It supports AC3, DTS, PCM, and MPA audio tracks, detecting them automatically from the source.

The output is always an AVI container with either Xvid or DivX video and either MP3 or AC3 audio, with optional subtitle handling through external VobSub files or burnt-in rendering. Maximum supported input resolution reaches 1920 pixels wide at 50 or 60 frames per second, which covered the entire HDTV landscape of its era.

The interface offers two modes. Predefined mode lets you select a target file size - typically 700 MB for one CD, 1400 MB for two CDs, or a custom value - and AutoGK handles every other parameter automatically.

Advanced mode exposes resolution width, codec selection, audio compression type, and subtitle behavior, but never reaches the depth that MeGUI or StaxRip provide for the same source material today.

When AutoGK Is Still the Right Call

There are three scenarios where reaching for AutoGK 2.55 is defensible:

The first is maintaining a legacy AVI archive. If you have hundreds of older rips encoded with Xvid at a specific bitrate target, and you want a new addition that matches the same encoder behavior and container quirks, AutoGK produces files indistinguishable from your existing library.

Modern encoders default to MKV and H.264 or HEVC, breaking that consistency.

The second is older hardware playback. Standalone DVD players that advertised "DivX certified" support, older car head units, and budget media boxes from the 2008-2014 era often refuse MKV or H.264-in-MP4 files but happily play Xvid-in-AVI. AutoGK targets that exact compatibility envelope.

The third is the one-click factor. If you do not want to learn presets, codec parameters, or batch queues - and you just want a DVD turned into a CD-sized AVI without thinking - AutoGK delivers that experience faster than any modern tool. The trade-off is encoder quality: a modern x264 or x265 encode at the same file size will look noticeably sharper.

What You Should Use Instead for New Workflows

For any new DVD ripping project, the modern free-software stack has moved well beyond what AutoGK can produce. The recommended path depends on what you are trying to accomplish.

If you want the closest spiritual successor - a friendly GUI that handles DVDs end-to-end with sensible defaults - install HandBrake.

It outputs MP4 or MKV files using x264, x265, or AV1 encoders, includes device presets for phones, tablets, and TVs, and is actively developed with releases shipping multiple times per year. The trade-off is that HandBrake does not decrypt commercial DVDs on its own.

For commercial discs, the standard pipeline is to extract the title with MakeMKV first - it strips CSS encryption and produces a lossless MKV - then re-encode that MKV with HandBrake or VidCoder. The how to use MakeMKV for free guide walks through the monthly beta key system that keeps MakeMKV free indefinitely. VidCoder is worth considering specifically if you prefer a Windows-native interface over HandBrake's cross-platform feel; it wraps the same encoding engine.

For users who want fine-grained control over encoder parameters, filter chains, and AviSynth scripting, StaxRip is the strongest current option. It supports x264, x265, SVT-AV1, NVENC, and Quick Sync hardware encoding in a single GUI.

The StaxRip HEVC encoding guide shows the kind of file-size reduction modern HEVC delivers compared to a 2009 Xvid encode - typically half the size at equal or better quality.

For commercial Blu-ray and DVD decryption beyond what MakeMKV handles, DVDFab and AnyDVD remain the most maintained paid options, with feature-comparable free alternatives diminishing every year.

Modern Components That Replace AutoGK's Internals

Several of the libraries AutoGK bundles internally have continued to evolve independently. AviSynth+ is the actively developed fork of AviSynth, now used as the frame-serving backbone of MeGUI, StaxRip, and many VirtualDub2 workflows.

DGMPGDec saw a 3.0 release that resolves the frame-loss bugs that plagued the older DVD2AVI engine.

The Xvid Video Codec itself is at version 1.3.7 and still works for users who specifically need Xvid output. If you only need to play the old AVI files AutoGK produced - rather than rip new ones - the K-Lite Codec Pack covers Xvid/DivX/AVI playback on any modern Windows system with no further setup.

Installing AutoGK on Modern Windows

AutoGK 2.55 runs on Windows 7, 8, 10, and 11 without compatibility shims, despite being seventeen years old.

The installer is 11.7 MB and bundles the codec dependencies it needs, so no separate downloads are required.

Reviewers in the comments below have confirmed working installs on Windows 8.1 and partial issues on Windows 10 - typically related to the bundled VobSub version conflicting with newer subtitle filters.

If you already have DirectVobSub installed for media playback, decline AutoGK's bundled VobSub during installation to avoid the conflict.

For commercial DVDs, AutoGK has no built-in decryption. It expects either an already-decrypted VOB folder or a disc that pre-dates copy protection.

Pair it with a separate decryption tool if you need to rip a protected disc - or, far more practically, switch to the MakeMKV plus HandBrake pipeline described above.

The Honest Verdict

AutoGK is a snapshot of how DVD ripping looked in 2009 - a quietly excellent tool for a problem space that has since moved on. It still works, the output still plays, and the workflow is still the simplest one-click DVD-to-AVI experience available on Windows.

But the file format it produces is no longer the dominant target for any new workflow, the encoder it uses produces visibly larger files than modern alternatives at the same quality, and no one has touched the code in over a decade and a half.

Download AutoGK if you have a specific reason to need Xvid-in-AVI output. For everything else, the alternatives section above will serve you better.