Latest Google Chrome?
Download/ update latest version:Â www.google.com/chrome/ Â
Camera/ Microphone help:Â https://tinyurl.com/txba53s
Latest Safari?
Download latest version- App store
To change Camera/ microphone access options, follow the following path in safari:
Safari preferences->Website->Camera & microphone tabs->Allow
Note: Many problems with the audio/ video can be resolved by clicking the Refresh button in the video