Camtasia Screen Recorder An error occurred in the Recorder: Video Codec Open Failed Problem Fixed
Step 1: Go to ( https://www.techsmith.com/codecs.html ) to Download Codec.
Step 2: Download Three Codec Files from this webpage (For 3rd file Mac/Windows download as your operating System) and Install them simply in your PC.
Remember - At the time of installation make sure your camtasia studio is open.
Done !
If it would be useful to you. make a comment and react to inspired me.