Codec Pack All in 1 6.0.3.0

Back in 2005 and 2006, a fresh Windows install simply could not play most downloaded AVI files out of the box, and this pack was a popular one-click fix.

You ran the setup, picked which pieces to install, and your existing player suddenly understood formats it had ignored before.

That problem has effectively disappeared on modern Windows.

Today a maintained pack like the K-Lite Codec Pack or a clean DirectShow filter set such as LAV Filters handles everything this bundle did and far more, with current decoders and no abandonware risk.

What Was Inside the Pack

The final 6.0.3.0 release bundled the codecs of its time: DivX 6.1.1, XviD 1.1, FFDShow (2005 alpha), an MPEG-2 decoder, OGG Vorbis filters, AC3 audio, the Morgan Stream Switcher, and the old DirectVobSub subtitle renderer.

Every one of those components is now many generations behind.

FFDShow itself was discontinued years ago and its role has been taken over by LAV Filters and ffdshow's successors, while AC3, Vorbis and MPEG-2 decoding are all built into anything modern.

There is no security maintenance, no bug fixing, and no support for newer containers like MKV or codecs like HEVC.

Who This Page Is For - and Who Should Look Elsewhere

There are really only two reasons to be on this page in 2026.

The first is historical curiosity - you remember this pack and want to confirm what it contained.

The second is that you have a genuinely old AVI file behaving strangely and you are retracing the exact decoders it was authored against, which is a niche troubleshooting exercise.

For everyone else - which is almost everyone - installing a fifteen-year-old codec pack is the wrong move.

It can conflict with the decoders already on your system and gives you nothing a current pack does not do better. If you just want your videos to play, skip straight to a maintained option below.

What to Install Instead

For the overwhelming majority of people, the K-Lite Codec Pack is the direct modern replacement - it is actively developed, lets you choose exactly which components to install, and covers every common format.

If you want the largest possible bundle with extra players and tools included, the K-Lite Mega Codec Pack is the heavyweight version. The freshly rebuilt X Codec Pack is a strong 64-bit alternative for people who want a clean, native installer.

If you would rather not install a pack at all, a self-contained player like VLC Media Player or MPC-HC plays nearly everything on its own with no separate codecs needed.

For lean, conflict-free DirectShow decoding behind your existing player, LAV Filters is the cleanest path.

And if you are unsure which decoder a specific file actually needs, the Codec Finder tool will tell you what to install rather than guessing with an old all-in-one bundle.

A Note on the Old Files It Was Built For

If your reason for being here is a stubborn legacy AVI, the most reliable fix is rarely a vintage codec pack - it is to play the file in a player that carries its own decoders, or to remux or convert it once into a current container.

VLC Media Player will usually open these files immediately, and tools like ffdshow or a modern conversion utility will future-proof the file so you never need a period-correct codec again.

The Honest Bottom Line on Codec Pack All in 1

Codec Pack All in 1 earned its place in codec history and served millions of downloads during the DivX years, but its development stopped in 2006 and it has no role on a current Windows PC. We keep this page as a reference to what it was, not as a recommendation to install it.

Point yourself at the K-Lite Codec Pack or VLC and you will get everything this pack promised, kept current and safe.