Audio from background vid playing on mobile devices

[Andy]

Hi guys, forgive me I'm a novice to building a websites.
I've got a problem.
All of a sudden the audio from background videos (linked form youtube) has started playing on the mobile version of my web pages (didn't do it before).

The video itself doesn't play, which is fine, I can see it says "This cover image will replace the background video on mobile and tablet devices." but the audio does all of a sudden.

I tried to get round it by hiding the relevant sections on mobile devices but it still does it. Can anyone advise how to get rid of the audio.

Andy

 

[hetha]

I have the same issue. It gets played at times. Not always while the background image is displayed.