QUOTE (westis @ Apr 28 2013, 13:34) <{POST_SNAPBACK}>
I tried separating audio and video, to normalize the audio and then merge audio and video together.
In principle this should work.
QUOTE (westis @ Apr 28 2013, 13:34) <{POST_SNAPBACK}>
But the audio doesn't change.
That's right because "r128gain" doesn't apply the gain. You may use the "--command" option in order to let SoX apply the gain:
CODE
r128gain "--command=sox %TRACK% %BN%-norm.wav gain %TGDB%" C:\Windows\Media\chord.wav -o .