On Mon, Aug 24, 2009 at 12:32 PM, <meino.cra...@gmx.de> wrote: > Hi, > > is there an application, which is able to physically decrease > the volume level of an mp3 with as less as possible loss of > sound quality. > (Background: I am merging video parts done with my webcam > with sound trailers. Volume of the webcam's mics and > the volume of the mp3 should be not too different.)
As Volker said, I think normalize will do the trick. It can normalize a batch of sound files so their volume level is the same. I would, however, suggest you decompress the MP3 into a lossless file, that way you aren't re-encoding and reducing sound quality further. Also, your video editing software may be able to adjust the volume of the individual audio tracks. Kdenlive, for example, has a normalize audio track filter.
