There are a number of programs that claim they will do that. Most cost money. Don't know if they work but reviews are generally favorable. Depends on the degree of corruption of the file. Google - repair corrupted MOV.
I have a Vidbox NW07. When I update the software to latest version, 3.07, the capture device is no longer recognized by the software. But does show up in Device Manager. When I go back to version 3.01 everything works again. This is in both Windows 8.1 and Windows 10.