There is only one file type that uses the .TSCPROJ extension:
TechSmith Camtasia Project File
A TSCPROJ file is a project file created by TechSmith Camtasia, a screen recording and video editing application. It contains the locations of all the recordings (.CMREC, .CAMREC, or .TREC files) and media files included in the project along with all the edits and effects applied to the project. TSCPROJ files are often used for creating software video tutorials and other demonstrations.
Updated: November 2, 2019