[MPlayer-DOCS] mencoder lameopts high/lowpassfriq
Diego Biurrun
diego at biurrun.de
Sat Jan 24 03:38:20 CET 2004
Ivan Kalvachev writes:
> Hi
>
> I have just commit 2 new options for -lameopts
> ...
>
> {"lowpassfreq",&lame_param_lowpassfreq, CONF_TYPE_INT, CONF_RANGE, -1,
> 48000,0}
> from `man lame`
> "
> --lowpass freq
> Set a lowpass filtering frequency in kHz. Frequen-
> cies above the specified one will be cutoff.
> "
> With other words, it keeps all frequencies lower than the given one I
> think that the freq is in Hz ( i don't have calculations like in lame.c)
>
>
> {"highpassfreq",&lame_param_highpassfreq, CONF_TYPE_INT, CONF_RANGE, -1,
> 48000,0
> },
> from `man lame`
> "
> --highpass freq
> Set an highpass filtering frequency in kHz. Fre-
> quencies below the specified one will be cutoff.
> "
> With other words, it keeps all frequencies higher than given one.
>
>
> All freq are in Hz, not kHz (I don't have same calculations like in
> lame.c). there are 2 special values
> -1 - disable filter
> - auto - let lame use auto values.
>
> I add these options becouse this is the only way filters could be
> disabled.
> If I encode from HiFi source (CD-ROM) I can hear that the filter is too
> agressive. Without it I cannot find out what file is the original one. Of
> cource this increase the requared bitrate, but I think it worths it. ~
OK, so how about
highpassfreq=<freq>
Set a highpass filtering frequency in Hz.
Frequencies below the specified one will be cut off.
A value of -1 will disable filtering, a value of 'auto'
will let lame choose values automatically.
lowpassfreq=<freq>
Set a lowpass filtering frequency in Hz.
Frequencies above the specified one will be cut off.
A value of -1 will disable filtering, a value of 'auto'
will let lame choose values automatically.
Diego
More information about the MPlayer-DOCS
mailing list