Try either ffmpeg or libav-tools. Either ffmpeg or avconv can do this. I
don't know the specific command because I don't use them for that purpose,
but I'm sure there is a normalization filter. If you transcode the video to
audio (they can do that too) there is also sox which works well. I offer a
$99 per year support service for these kinds of questions. Please see my
contact information in my signature.
On 7/28/2015 10:00 PM, Hart Larry wrote:
OK Janina, as far as normalizing, please consider "mp3gain" which you alter
levels of an mp3, but in most cases there are no equivalant programs to
change audio levels in an mp4 or many other video formats. And as far as an
mp3editor, well Chuck's edway is a converter, but there was another one
which had these ellavators, did not seem to be something where I could just
arrow through sound-and-turn on-and-off blocks as you would in a word
processor Thanks for inquiring
Hart
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