MPCHC - Sound Level Decreases Over Time

This is a first! Didn't have this problem before. Just started today.

Watching a movie and the sound level decreases by itself over time. Creepy!

Can you please advise?

Thanks

Using:
Win 8.1 Pro x64
K-Lite Codec Pack 10.6.2 Standard

Did you enable volume normalization? If so, you must keep "Regain volume" enabled as well.

Where can I find this setting?

Thanks

MPC-HC Options > Audio Switcher

I dont have it enabled.

I will test it and let you know if I encounter the issue again

Thanks

Another thing to check:
Windows control panel > hardware & sound > sound > Communications tab > select "do nothing"

Also verify that MPC-HC is using LAV Audio decoder:
MPC-HC menu > Play > Filters