K-Lite Codec Pack 64-bit 9.9.9

If you have arrived here looking for 64-bit codec support, the important thing to know up front is that this separate package is no longer maintained - and you almost certainly do not need it anymore.

The 64-bit filters it once provided have been built directly into the standard K-Lite Codec Pack, so a single modern installer now covers both 32-bit and 64-bit playback on the same machine.

What K-Lite Codec Pack 64-bit Actually Was - in Plain Terms

Back when 64-bit Windows was still new, most media players and many DirectShow filters were 32-bit only.

K-Lite Codec Pack 64-bit existed to fill that gap, installing native 64-bit versions of the decoders, splitters and tools that 64-bit applications needed.

It bundled ffdshow, LAV Video, LAV Audio, the LAV Splitter from LAV Filters, AC3Filter, Haali Media Splitter, DirectVobSub, Lagarith, the Codec Tweak Tool, Win7DSFilterTweaker, GraphStudioNext and Icaros.

It was small, light on system resources, and ran on 64-bit editions of Windows 2003, XP, 7 and 8.

Why It No Longer Exists as a Separate Download

The reason for the separate package disappeared. Modern 64-bit versions of Windows run 32-bit software without any trouble, and the regular K-Lite Codec Pack now includes both 32-bit and 64-bit codecs in one installer.

The standalone 64-bit project was discontinued because keeping it separate served no purpose once those filters were merged.

That is why this page intentionally does not pretend to offer a current release - the last real build is the 2013 beta, and installing a thirteen-year-old codec pack on a current PC is far more likely to cause conflicts than to solve a playback problem.

Who This Page Is For - and Who Should Look Elsewhere

There is a narrow group this still matters to: anyone maintaining a genuinely old 64-bit machine running Windows XP x64 or an early Windows 7 install, or someone cross-referencing the historical component list.

If that is you, the legacy installer below is preserved as-is. Everyone else - which is to say almost everyone reading this on a Windows 10 or Windows 11 PC - should skip it entirely and install the current pack instead.

You will get newer, safer, actively maintained versions of every filter this old bundle contained.

What to Install Instead

For nearly all users, the K-Lite Codec Pack is the direct replacement. It comes in Basic, Standard, Full and Mega tiers, so you can match the install to how much you need - Basic for simple playback, Mega if you want every encoder and filter included.

If you specifically want the largest bundle with the broadest format coverage, the K-Lite Mega Codec Pack is the all-in-one option.

Prefer to keep things minimal? Installing just LAV Filters gives you the modern decoding engine that K-Lite itself relies on, with nothing extra.

Pairing any of these with a capable player like MPC-HC or VLC Media Player covers essentially every format you are likely to meet today.

Before You Install: Sorting Out Existing Codecs

If you have been wrestling with playback errors, do not stack multiple codec packs on top of each other - that is the most common cause of conflicts.

The Codec Tweak Tool can clean up broken or duplicate filter registrations before you install anything fresh.

If you are unsure which decoder a problem file actually needs, the Codec Finder tool helps identify it so you install the right thing once rather than guessing.

Get the Legacy K-Lite Codec Pack 64-bit 9.9.9 Free

The original 9.9.9 beta installer is preserved for archival and legacy-system use. It is an 11.8 MB download that runs on 64-bit Windows 2003, XP, 7 and 8.

Treat it as a historical artifact rather than a current solution - on any modern system, install the maintained K-Lite Codec Pack instead and you will be set up properly in a couple of minutes.