No sound on Youtube embedded in Revolution Slider

Hi Minti – I am trying to embed a Youtube video within the home page slider.

The video plays fine but there is no sound:

Home

Viewing the video via Youtube, there is no problem and the sound is fine.

See here: https://www.youtube.com/watch?v=T1afK_m5waw

On mobile devices, the video doesn’t even show.

Wondering if you can help please?

Regards

Gary Williams

Ticket