Monday, April 9, 2007

How to normalize volume in avi files with mp3 audio?

Frequently we come upon avi files with sound whose volume diverges from the usual norm. Either it is too strong in which case our speakers choke up or it is too faint, forcing us to constantly adjust the volume in the software layer/speakers/Hi-Fi stereo, especially when playing episodes of our favorite series from a playlist. In some extreme cases, an error in the original compression process means that even if we raise the volume to 100% there is nothing reasonably audible. Fortunately this can be easily rectified, as long as the audio stream in the avi has been compressed with an MP3 codec.

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