64 byte OBS may require the C++ Redistributable Package for Visual Studio 2013 which can be downloaded here if you get a MSVCR120.dll file missing error. (note the 32 bit version was also installed, and works without the package).
Here is the link that solved the MSVCR120.DLL error on my 2013 Dell desktop that runs Windows 10 (Visual C++ Redistributable Package for Visual Studio for 2013).
The following screen shots represent setting of the screen capture in the video, but work needs to be done to improve the quality after it is uploaded to YouTube. Note how the output in OBS has many more options than in iSpring Free Cam. Input from students is welcome.
Screen Capture of the "recording" option in Output
Screen Capture of "Video" settings
Screen Capture of HotKey settings
Screen Capture of Advanced Settings.