Ac3 normalizing

[themafia_69]

hey guys, i have an avi file that i want to normalize the volume on (higher it) i did it to previous files with no problem, however on this file when i higher the volume in virtualdubmod surround and i listen to the output file its like most of the file is muted, but a bit of it isnt. very weird, how can i get it working?

[Soopafresh]

http://dspguru.notrace.dk/BeSplitv0.9b6.zip

BeSplit -core( -input in.ac3 -output out.ac3 ) -ota( -G max )


Never tried it, but it should work.

[themafia_69]

for some reason it doesnt work like anything i try, i think theres something with the audio stream that makes it like corrupt or something when i edit it, when i play it in media player classic it works fine, if i try to do anything else it cuts the sound, maybe im loosing some of the channels? because i can hear some of the sound afterward its just that like 90% of it is gone (anything extracted has this problem)

[themafia_69]

yeah its basically just background sounds, like whats going on around but not the main audio

[Soopafresh]

Maybe your dialogue channel has been mapped to something other than center. Try listening to each individual; track, and you can determine which channel needs to be louder.

[themafia_69]

how can i do that?

[Soopafresh]

Depends on your AC3 decoder on your PC. Ac3filter should let you do it.

Another Hit and Miss method is to use "BeLight", re-encoding to AC3 and setting dynamic range compression levels to "heavy".

http://forum.doom9.org/showthread.php?p=571527#post571527


AC3 is difficult to work with - even with commercial tools.

[themafia_69]

ohh forgot to add, i have ac3 filter included with k-lite mega codec pack, i raised the main gain on it to raise the volume while its playing, but i still want to figure out why it "removes" the main sound when i try to extract it, or do anything to it.