There is only one file type that uses the .TSCDF extension:
TechSmith Camtasia Device Frame File
A TSCDF file contains a device frame used by TechSmith Camtasia, a screen recording and video editing application. It stores an image or video that includes a device, such as a desktop, laptop, or mobile device, that frames a clip to make it appear as if the recording is occurring in that device.
Updated: October 2, 2019