Audio functions have no effect on actual volume
https://forum.videolan.org/viewtopic.php?f=14&t=114074
From what I have been able to determine is that from possibly version 2.0.6 onwards both the embedded mute=true and the related javascript functions to affect audio no longer appear to have any effect on the actual audio of the embedded video being played in my website.
Querying the object for the values (eg: vlc.audio.mute) return the expected results. And these values do update when I call various methods. However the audio being played never changes.
Once I reverted my VLC web plugin to 2.0.5 the issues disappeared.
I encountered this problem with both Chrome and Mozilla.