Does not work in browsers Firefox 48, Basilisk, MyPal.

[greyrat116]

Can you assemble a userscript from this extension ?

[track02]

Hi, I'm not too familiar with userscripts but let me have a look into it

[greyrat116]

There is no volume adjustment in the mobile version of Youtube. The Youtube-Player extension handles the mobile version of Youtube, but works from Firefox 52. Mobile Youtube is the only way to view Youtube on old PC.