[FFmpeg-user] Same output bit depth and sampling frequency as input?

Marco Mircoli nuvolablux at gmail.com
Sun Feb 14 12:29:45 EET 2021


Yes, the result Is not leveled to the target loudness value

Il Ven 12 Feb 2021, 19:26 Paul B Mahol <onemda at gmail.com> ha scritto:

> On Fri, Feb 12, 2021 at 7:17 PM Marco Mircoli <nuvolablux at gmail.com>
> wrote:
>
> > Il giorno ven 12 feb 2021 alle ore 10:53 Paul B Mahol <onemda at gmail.com>
> > ha
> > scritto:
> >
> > > On Fri, Feb 12, 2021 at 12:48 AM Marco Mircoli <nuvolablux at gmail.com>
> > > wrote:
> > >
> > > > Hello everybody,
> > > >  wondering how to set the same output audio specs (sample rate anche
> > bit
> > > > depth) as input.
> > > >
> > > > I tried like that
> > > >
> > > > ffmpeg -i FILE_FROM -af dynaudnorm,loudnorm=I=-16.
> > > > 5:TP=-1.5:LRA=7 -sample_fmt s16 -ar 44100 FILE_TO
> > > >
> > > >
> > > >
> > > > if I have a 48KHZ input, the output is 44100, so doesn't work for my
> > > needs
> > > >
> > > > Tried without
> > > >
> > > >
> > > > ffmpeg -i FILE_FROM -af dynaudnorm,loudnorm=I=-16.
> > > > 5:TP=-1.5:LRA=7  FILE_TO
> > > >
> > > > The result is: same bit depth of input file but 192Khz sample rate.
> > (file
> > > > input sr is 48khz)
> > > >
> > > > Anybody can give me a suggest?
> > > >
> > >
> > > Use shell scripting.
> > >
> > > Also using those 2 filters at same time is entirely invalid and
> > pointless.
> > >
> > >
> > >
> > Unfortunately, don't know ho to use shell. I'm a newbe. Any resource that
> > can help me to start with shell scriping?
> >
> > ffmpeg -i FILE_FROM -af dynaudnorm,loudnorm=I=-16.5:TP=-1.5:LRA=7
> FILE_TO
> >
> > Cannot understand why this Is invalid.
> > 1st filter (dynaudnorm), level the audio changing the volume every frame
> > window
> > 2nd filter (loudnorm) set an offset to the gain to let the loudness go to
> > 16.5lkfs
> >
> > I've miss something?
> >
>
> Is there any difference when you remove dynaudnorm?
>
>
> >
> > Thanks.
> > S:
> >
> >
> >
> >
> >
> >
> >
> > >
> > > > Thanks,
> > > > S.
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