[FFmpeg-user] firequalizer: What is multichannel evaluation?

[Paul B Mahol]

On Sat, Feb 24, 2024 at 9:48 PM Bernd Butscheidt via ffmpeg-user <
ffmpeg-user at ffmpeg.org> wrote:

> Hello,
>
> trying out some equalizer settings, I stepped over this part in the
> documentation of ffmpeg describing the firequalizer filter:
>
> "multi
>         Enable multichannels evaluation on gain. Default is disabled"
>
> What is multichannels evaluation? And are the gain_entry settings applied
> to all channels with the default settings with multichannel sound? Like,
> e.g., when using the given example:
>
> firequalizer=gain_entry='entry(100,0); entry(400, -4); entry(1000, -6);
> entry(2000, 0)'
>


If you use multi option together with ch/chid in expressions you can have
different gains for each channel.


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