Audio levelling

[Former user]

Sorry if this counts as a double post, posted this on the forum but im not sure where im meant to be posting this stuff...

Would love to see audio levelling, auto gain during transcoding (must be able to turn on and off)

Not sure how FFMPEG works, so I cant suggest any settings.

Some movies are just too low in volume, but I dont want to have to batch normalise all my videos 1 by 1 just to fix the audio.

My tv has a rather lame amplify function but its useless...

Would help keep volumes more consistent and easier to hear dialog for instance...

[Petr Nejedly]

this would have to be done on a case by case basis. There is a -vol parameter, but nothing that will automatically level volume to a desired level.

Low volume might also be caused by playback of 5.1 audio on a stereo system. In that case Downsampling to stereo might help.

[Former user]

mencoder.exe -ovc copy -af volnorm=1 -oac mp3lame -lameopts cbr:br=128 input.avi -o output.avi