[MPlayer-users] mencoder encoding AC3 audio to mp3 lowers the volume

Stefan Lange hoirkman at gmx.de
Mon Jun 24 13:40:01 CEST 2002


Georgi Hristov wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> hi,
> 
> i'd like to know if i'm doing it wrong or this is the way it works. problem
> is that mencoder lowers the volume VERY much when reencoding AC3 audio to
> mp3:
> 

try adding vol=value to your -lameopts, where "value" is a number 
between 0 and 10 (see manpage). About 1.5 should be OK


> mencoder -ovc lavc -lavcopts vbitrate=615:vcodec=mpeg4:vpass=1 "Gosford
> Park.avi" -o gp.avi -oac mp3lame -lameopts cbr:br=128
> mencoder -ovc lavc -lavcopts vbitrate=615:vcodec=mpeg4:vpass=2 "Gosford
> Park.avi" -o gp.avi -oac mp3lame -lameopts cbr:br=128
> 
> now gp.avi is absolutly undesirably quiet.
> i can provide a full log if it's needed.
> 
> regards,
> Georgi
> 
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