[mythtvnz] Audio levels significantly different across different channels

[cmacneill at snap.net.nz]

Hi,

I have noticed recently I now have to alter the TV volume when changing 
channels which I don't recall having to do in the past to the same 
degree as now. The audio levels seem to differ across channels, I 
haven't done a full analysis yet, but Channel 4 seems significantly 
louder than others.

Apart from routine updates nothing has changed on my Mythbuntu setup, 
however I did add a seocnd HDHomeRun device to increase the available 
tuners. When adding the 2nd unit I did upgrade the firmware on the 
original one.

I was under the impression that all TV channels are broadcast with the 
same audio levels, so would imply the problem is my end.

Anyone got any thoughts as to what is happening and if there are 
settings anywhere in MythTV to alter audio levels on a per channel basis 
so I don't have to keep mucking around with the TV volume?

Regards

Chris Macneill