Mostly https://docs.crowdcast.io/en/articles/1935406-how-to-use-your-dslr-as-a-webcam https://docs.crowdcast.io/en/articles/1935406-how-to-use-you... But use C

Mostly https://docs.crowdcast.io/en/articles/1935406-how-to-use-your-dslr-as-a-webcam https://docs.crowdcast.io/en/articles/1935406-how-to-use-you... But use Camera Live v11. (Newer versions hit some problems with Catalina) And tweak CamTwist settings to do 720p 30fps. Browsers won't acknowledge CamTwist new/changed virtual cameras until you restart them.