Quote:
Originally Posted by alexVS
Long time ago I converted AC3 5.1 to stereo using Graphedit and AC3filter. I could adjust sound so, that dialog and central channel become louder. Like in picture...
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In your picture seems the Center channel at high volume and low volume for surround channels. Maybe you can try a avs mix like:
Quote:
Function Dmix6Stereo(clip a) {
flr = GetChannel(a, 1, 2)
fcc = GetChannel(a, 3, 3)
lrc = MixAudio(flr, fcc, 0.4, 0.4)
blr = GetChannel(a, 5, 6)
return MixAudio(lrc, blr, 1.0, 0.2)
}
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- The 3 coeficients must sum 1.0 to avoid clip.
- Like the C channel is present in L and R output channels the volume is equivalent to 0.8
You can use also ffmpeg with:
Quote:
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ffmpeg -drc_scale 0 -i "input.ac3" -af "pan=stereo|FL < .4FL + .4FC + .2SL|FR < .4FR + .4FC + .2SR" -acodec pcm_s24le "output.wav"
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or recode to AAC, AC3, ...
EDIT: if you have the UsEac3to GUI with ffmpeg and qaac: