[Feature] Add swipe up/down to control volume

[rtritto]

No description provided.

[raxod502]

To add to this feature request: currently, as far as I can tell, this plugin makes it impossible to adjust the volume of a video in any way. The volume button, unlike on desktop, does not expand into a slider. It just toggles between muted and unmuted.

This is not ideal from a user experience point of view.

[raxod502]

Holy moly. It is possible. You have to long-press on the volume button and it expands (seemingly forever and never to be compressed again until you refresh the page). I have no idea how I would have known that this was possible. It's not documented anywhere that I can see.

My videos have all been too quiet to hear properly on mobile for weeks and it took me until now to track down this bug.