K-Lite Codec Pack (64-bit) contains a couple of 64-bit DirectShow filters. These filters can be used to play the most common types of video files in 64-bit media players. This pack works on the 64-bit versions of Windows XP, 2003, Vista and Windows 7.

This is a bundle of 64-bit DirectShow filters that can be used together with 64-bit players, such as Vista Media Center. This pack can co-exist without problems with the regular (32-bit) K-Lite Codec Pack.
The 64-bit versions of Windows can run 32-bit software perfectly fine. So it is recommended to use the regular K-Lite Codec Pack when possible. That one contains more, better and faster decoders. You only need 64-bit filters for use with 64-bit applications.

Contents of K-Lite Codec Pack (64-bit):
1. ffdshow
2. AC3Filter
3. AC3File
4. Haali Media Splitter
5. MP4 splitter (Gabest)
6. FLV splitter (Gabest)
7. RealMedia splitter (Gabest)
8. MPEG splitter (Gabest)
9. CDXA Reader (Gabest)
10. DirectVobSub
11. Codec Tweak Tool
12. Win7DSFilterTweaker
13. GraphStudio

Tools:
1. K-Lite Codec Tweak Tool 4.0.4 - With this multi-functional tool you can (1) detect and fix some common problems (2) generate a detailed list of all installed codecs and filters (3) reset settings (4) backup/restore settings (5) manage the installed codecs and filters.
2. Preferred filter tweaker for Windows 7 2.2 - Allows setting third party decoders as the preferred filters in Windows 7.
3. GraphStudio 0.3.2.0 - GraphStudio is a tool for constructing and analyzing DirectShow filter graphs.

K-Lite Codec Pack (64-bit) can works on 64-bit versions of Windows XP/2003/Vista/2008/7.

The license of this software is Freeware, you can free download and free use this codec pack software.