Thanks very much for your reply. I should probably have said in my original post that I’m not a developer and don’t know anything about coding. I copied and pasted the script from this thread Autoplay not working for vimeo video - #18 by Siton_Systems and added a little extra to make it loop.
I think what I am really hoping for is someone to give me a little piece of code to add to what I already have which will mean the volume will only be raised on the intended video without affecting the others. Is that possible or is it more complicated?
Thanks