i d like to do a live on Facebook and switch from my webcam to youtube by exemple … with the sound of youtube in my tv program (Facebook live)
You will need to run a 3rd party application to capture the sound of that particular app (e.g. Soundflower https://rogueamoeba.com/freebies/soundflower/ or Loopback https://rogueamoeba.com/loopback/ ). Such an app will provide the output of an app as an audio source to other apps like mimoLive.