How do I normalize the audio in several avi files prior to encoding/authoring?

[catback]

Hi,

I have about 20 music video clips that I've captured to separate avi file from my cable TV that I would like to encode to a DVD. The DVD will be menu driven with each video clip listed separately. The problem I have is the audio level varies for each clip. How would I be able to normalize the audio for each clip to the same level prior to encoding or authoring?


The following are the steps I take to create the DVD:

Capturing:
Use avi_io with PicVideo MJPEG codec and audio at umcompressed PCM 48kHz.

Encoding:
CCE Basic with audio encoded to MPEG Layer 2 @ 224 kbps. CCE Basic creates elementary output files (seperate .mpv and .mpa files).

Authoring:
TMPEG DVD Author


I'm not sure at which point in the 3 steps above I should perform the audio normalization. I haven't seen any option in CCE Basic for normalize audio of the input avi files. If anyone has suggestions, please post them.

Thanks.

[oddyseus]

Audio editors, like cooledit, soundforge etc, have an option that let u global normalize the audio levels of a series of wav files so that they sound equal.

Each program has its own term for this and iirc cooledit calls it Group waveform normalize and u can find it under the Edit menu.