Meta in controls bar

[Solarunit]

I think it would be nice to have codec and resolution labels that you can add on the controls bar.
Something like this:

[tomasklaen]

Maybe we can have a new control element that displays a template while subscribing to its properties like we do with the title.

[Solarunit]

I see It could be a problem with converting mpv resolution property like 3840x1920 to just 4K or 1920x1080 to 1080 HD to make it look more compact on controls bar.