The video is playing but there is no sound.Updated 10 months ago

If you are watching via a web browser like Google Chrome or Safari it's common that the web browser automatically mutes videos. This is a great feature to ensure that you have full control over the volume. 

Look down and you will see Unicorns.LIVE Creator Matty P showing where to find the volume control option. All you have to do is adjust that to a comfortable level.