Hi,
The MediaRecorder element will capture video unless it is explicitly restricted to audio: https://doc.pcibex.net/mediarecorder/
If there is a newMediaRecorder command in your script that does not explicitly specify "audio" (ie neither newMediaRecorder("audio") nor newMediaRecorder("myrecorder", "audio")) then PennController will determine that you need to capture video and accordingly require access to the participant’s webcam
Jeremy