Opening CPK Files

The CPK file type is primarily associated with Sega.

CPK	File extension: CPK
	File type:	video file

What is a CPK file?

CPK files mostly belong to Sega by Sega of America, Inc. CPK file is used as a log file by Driver Test Manager (DTM), one of the applications offered as a part of Microsoft's Windows Logo Kit (WLK) device certification toolkit.

Main Use: Driver Test Manager (DTM) is maintained by Microsoft to carry out the service of their Windows Dev Center-Hardware Dashboard. Test packages created by DTM Studio software are saved in the compressed CPK file format to be further certified by Windows Dev Center-Hardware Dashboard. The CPK file consists of the entire log of all the tests conducted on a specific unit of hardware and all the corresponding results.
Other Uses: CPK file format is also used as a resource package file by games created with the CRI Middleware packaging tool. CPK package files contain information linked to graphics, sounds, character models, and videos in a compressed archive. Although these CPK package files are not supposed to be modified in any manner by the user, gamers are known to extract the contents of the CPK packages and modify them (this is called modding) using unofficial and unauthorized tools to alter the original gameplay. Sega Saturn Multimedia also uses its proprietary CPK format to save audio and video related game information on the Sega and Sega Saturn game consoles.

How to open a CPK file

You need a suitable software like Sega to open a CPK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CPK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CPK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CPK Text Viewer

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Programs that open and convert CPK files:

Sega by Sega of America, Inc.
See the previous paragraphs to learn more about the main application. CPK files are often referred to as Sega videos because this type of file is primarily created or used by this software.
Packed Filemaker (CRI packed file) by CRI Middleware
The Packed Filemaker is a program which is utilized to create data straight from the CRI file system library, which is widely used amongst 3D modellers and renderers for video games and video production. Usually, CPK files are used to compress game data in order for the resulting allocated file storage to be much less, where the program allows you to personally optimize file allocation. This file format is classified as Game. Related links: CRI system tools download link

CPK file format:

Why is it important to know the file format? This is the only way to find out which program to use to open the file. The first characters in a file identify the file format, for example, HTML files start with the bytes <html>. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our examination of the CPK files comes to the following conclusion:

CPK is a very common file type and is primarily used by a single program. The following file formats are most commonly found in CPK files:

90% of all CPK files have the same signature CPK. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The average file size is 140 MB with most files being between 440 KB and 1 GB in size. The file type was developed only in the last few years. Certain words are almost always found in the files, such as CPK and @UTF. Such CPK files store data about data, mobile, smkdb, patch, sound, update, movie, game and over.
2% of all CPK files use the same file format, which can be identified by the letters "00 00 00 00" at the beginning. If you open these files in a text editor, you will see only illegible characters. The files are on average 2 MB in size and range from 100 KB to 2 MB. The following filename is common: data.cpk.

The remaining 8% of all CPK files are files with no common format, such as Sega CPK video and CON. Often described as kits, text, partition, extra, football or micano. Drag & drop your file here to see the file format and a preview of your CPK file!

Technical Data for CPK File Extension

File classification:

Video

Related files:

xfbin, rar, exe, zip, bin, ckp, png, cak, film, jpg, dll, pck, usm, iso, 7z, crk, bnk, npd, cfk, cdk, sj1

Related links:

CPK to MP4 converter

Mime type:

application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: cpkfile, FileType: Copernic Engine Package, AppName: Copernic
EXEFile: Copernic.exe

ProgramID: cpkfile
EXEFile: Copernic.exe %1

ProgramID: cpkfile
EXEFile: %ProgramFiles%\Copernic 2000\Copernic.exe %1

ProgramID: cpkfile
EXEFile: %ProgramFiles%\Copernic 2001 Basic\Copernic.exe %1

Show all 4 listings To Top

a cpk video file is a special file format by Sega of America, Inc. and should only be edited and saved with the appropriate software.

How to solve problems with CPK files

Associate the CPK file extension with the correct application.
Update your software that should actually open video files. Because only the current version supports the latest CPK file format. Search, therefore, e.g. on the Sega of America, Inc. manufacturer website after an available Sega update.
To make sure that your CPK file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CPK file online - secure, fast, and no downloads needed.