How prevent Firefox ( or Raven ? ) to change audio level?

Hi,

not sure here which is the beginning of what…

If using Raven / applets you may notice the general audio volume and audio volume per app’

In Firefox, that audio volume is often « changing » by itself, at each new playing of stream ( be it from deezer, youtube… )

…but honestly I’m not sure what those sliders mean.

Any idea / recommendation ?

this? https://bugzilla.mozilla.org/show_bug.cgi?id=1422637

It seems so, good catch !

…maybe gonna try

But I don’t like to change things « inside » Firefox ( as I have many computers to check and « harmonize » )

After trying to set audio scale in about:config, I am not convinced.

New tabs with audio may come with no sound.