If you want to check whether your audio/video is working fine or not, you can do it just by clicking on the below link:
->Click on Check devices.
->If your mic or video is not working properly then click on the Troubleshoot option present at the bottom of the window.
->Depending on which browser you are using (Google Chrome, Mozilla Firefox, Safari). You can go to that specified link to take help. You are provided detailed step-by-step help to troubleshoot the problem.
->If you are using Google Chrome go to the below link:
->If you are using Mozilla Firefox go to the following link:
->If you are using Safari go to the following link: