Fluctuating volume

Hey there, is the volume cursor moving or is this just the sound being louder on some commercials and shows?

Okay, so just to make sure we are on the same page, you have your volume set to for example say 10 and during the show, it doesn't move up to 15 or anything but the sound gets louder? When you go to lower the volume it is still set at 10 when this happens, correct?

OMG I've been experiencing this too! Where the hell is that coming from??? Using Xfinity Stream app, no set top box (obviously), on a Philips Android 55". I thought maybe one of my HDMI cables was loose but I gently wiggled all cables the last time this happened and nothing changed. Volume jumped down to where I could barely hear anything. I do not have numbered volume. I can only tell you that my volume bar, most of the time, is set around a quarter way into that status bar. There have also been instances where the volume jumps up where I have to scramble for the remote. The only way to fix it is to change channels and come back to the channel I was on. Goes back to normal.

I can watch channel x the volume normally goes low, no change to anything. I can change the channel the volume comes back to where I was listening before. Go back to the channel I was originally watching and the volume is the same as three original volume. No change in my volume level or loudness by either me physically or by the TV or any other device.  The volume cuts out.

How ever if I raise the volume to my normal listening level, sound only not volume in a screen or mark and then change a channel, the loudness is quite horrific. 

So my volume normally decreased significantly. If i change the channel the volume of my normal listening please comes back. If I don't change the channel but raise the volume,  either changing the channel or eventually the volume is restored on the TV, it is rather loud. 

This happens on all my tvs and they all stream. 

Forgot to add, this is not one channel this is on most all my channels.