When I follow the instructions for recording voiceover, I get a message saying that it cannot open the Facetime camera or built-in microphone.
At :48 in the video…
I was able to select My Blue Yeti mic without a problem using Shotcut version 18.05.08 (latest version).
In Windows 10 here is how I have my mic set up. (Right click the speaker icon, then Recording Devices)
I am using a Macbook Pro.
Microphone is working fine in other apps but Shotcut gives a message saying that it cannot open it.
This thread might help with the problem.
Thanks for your help.
I ran from the command line but still get the error message that the microphone cannot be opened.
This issue was fixed in v18.06 for macOS.