How to normalize audio in a video file

[the_observer]

Hello all.
I have a video file which the sound volume varies very much from the start till the end.

Is any way that i can normalize the sound volume of the file?

The file is a .wmv but I would also be interested in solutions of other type of files since i can change the .wmv file to something else mpeg for example...

Thx in advance,
N.

[Awatef]

Well, for example for AVI files with MP3 audio, you could extract the MP3 track, use mp3trim to normalize it, then remux the result with the video. This method doesn't re-compress the audio file, so the process is not harmful to quality.

[the_observer]

Ok i will look to these 2 progs.If i got it right they are :
-mp3 track and
-mp3trim

Thx...

[Awatef]

mp3trim is the normalizing tool, but I didn't mean a program with "MP3 track". I was talking about the mp3 track embedded within the AVI file. You can extract it with a programm called VirtualDub (look at the Doom9 guides for more details).

[the_observer]

thx mate