Update:
I found a solution: I suppose portaudio is related to pyo, so I changed the order in the Psychopy preferences to chose pygame over pyo. First, I received an error message saying there was no pygame module and indeed I couldn’t find pygame in my Psychopy folder. So I downloaded the respective pygame .whl and put it in the Psychopy Scripts folder. From there I installed it using the command window. Now all my video-based experiments are running smoothly to the end without any error messages. Phew!
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