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.COS2 File Extension

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File TypePinnacle Studio Cache File

DeveloperPinnacle Systems
3.5 (4 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryMisc Files


This file is saved in a binary format, which requires a specific program to read its contents.


Temporary file created by some versions of Pinnacle Studio, a program used for editing videos; stores information for a specific resource, such as a .WMV or .WMA file; generated automatically by Pinnacle Studio when in edit mode.

More Information

COS2 files can be safely deleted. Pinnacle Studio will regenerate them the next time a project is edited.

Program(s) that open .COS2 files
Microsoft Windows LogoWindows
Pinnacle Studio 18.5
Updated 4/26/2010