rem demultiplex the audio and video from the source file (mpeg1 only) 

mpgtx -d %1 

rem normalize the mp2 audio track and auto create a new mp2 file 

besplit BeSplit -core( -input chunk-0.mp2 -output output.mp2 -log BeSplit.txt -type mp2 ) -ota( -G max ) 

rem multiplex the mpeg1 video and the normalized mp2 into a new mpeg file 

mplex -f 1 -v2 -o new-%1.mpg chunk-0.m1v output.mp2 

del *.m1v 

del *.mp2