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Old 11th January 2020, 22:43   #1  |  Link
alexVS
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Join Date: Sep 2004
Posts: 147
Converting AC3 5.1 to stereo with volume adjusting

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.

But now WAVDEST.AX dated 1998 year old, It's kind of scary to install codecs 20+ years old. And AC3filter is not required in system, i use LAV decoder.

How can I fast transcode audio 5.1 to stereo using something modern, fast, may be portable. I tried BeHappy, but it's difficult, and I can't find right coefficients for avisynth Mixaudio and Mergechannels.

I just need to convert AC3 5.1 to WAV Stereo, boosting central channel with speech, and lowering special effects, that are usually in SL, SR channel. And may be mute LFE sounds. And speed matters, because demuxing all to 6 wav, editing volume in soundforge , encoding and muxing back is very time consuming.

Can ffmpeg or eac3to help with it? or something other? Help, please!
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Last edited by alexVS; 11th January 2020 at 22:47.
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