Normalize volume

[MAKcU]

Hi, know anyone how can i normalize volume before making a dvd by music videos in various formats? Thx

[borax]

...in various formats
That may be a problem.
In general, every recent audio software (audacity, goldwave, cooledit...) as well as some transcoders (like besweet, ffmpeg) can normalize volume of AUDIO FILES (not videos!).
Therefore the actual procedure depends on the source as well as the used authoring software.

[offline]

borax is right....

It might be best to import all your clips, create your DVD on the hard drive, then demux the entire audio track and normalize it.

[AlanHK]

You probably have to demux them anyway before authoring. If the original sound streams are MP3 (as is often the case) you can then use MP3Gain to normalise all the tracks together (before converting them to MP2 or AC3 for DVD). It's very fast and simple.

[GTRBudda]

Normalizing the tracks seperatly, before authoring, will give you a more uniform volume overall. Normalizing after combining all the tracks will increase, or decrease, the volume of the entire track based on the highest point of volume in the track, the realtive "volumes" of the different track will stay the same. At least that's how it works in Audacity. If they are mp3 audio, Mp3DirectCut can be used for normalizing as well, faster than Audacity, though I've had better results converting wav (from Audacity) to ac3 (with FFMpegGui) than any mp3. Something to do with variable bit rate I think.

[AlanHK]

When I wrote "normalise together" in MP3gain, I meant all the tracks at the same time, not as a single combined track. The idea is to work with an "album" of tracks.

I used this with a bunch of TV episode rips I was burning, some of which were much quieter than others. I used this and had them all matching (by comparing the opening theme) in a few minutes.

[GTRBudda]

Ah, I wasn't familiar with Mp3Gain, it works in something like a batch process. Very nice. What a gui that would make for Azid, if it were adaptable.