Thanks for the info Alexander.

--- Alexander Leidinger <[EMAIL PROTECTED]> wrote:
> On Tue, 10 Sep 2002 06:43:36 -0700 (PDT) Shel Ritter
> <[EMAIL PROTECTED]> wrote:
> 
> > The -V switch controls VBR quality from 0-9 right?  I'm wondering what
> > technically is changed to attain the different levels of quality.
> 
> Algorithms.

Can you point me to what these algorithms are exactly are, and what they
address?

> > I don't understand the -b frame size switch.  What exactly is a frame?
> > And how does varying its size affect the quality of the compressed
> audio?
> 
> VBR/ABR allows to modify the amount of kbit/sec depending on the actual
> need of the signal. With '-b' you set a minimum bitrate. So if the
> encoder thinks the actual part of a song can be encoded in 32kbit/sec,
> but you use '-b 96' he will use 96kbit/sec instead of 32kbit/sec for the
> actual part.

Ah... interesting.  I first got invloved with Lame reading the
documentation that came with the 3.92 package that was a bit outdated I
find now.  It set me to the r3mix site where I decided that for my
equipment and purposes, the switches -V2 -b32 suggested in the 'Quality'
page there were sufficient at the moment.  However someone on the NEXIIMP3
list pointed out that the presets can be used more affectively these days.

So I guess that for a lot of people without a depth of understanding into
these algorithms and various switches, the best way to find what
combinations work the best would be a combination of using predefined
prests together with a bit of experimentation with presets.

> > And can any of the Lame switches be used to override all of the
> > presets?
> 
> --alt-preset modifies some values which can't get modified with other
> cmmand line switches, so you can't override everything.

This begs the question, has anyone compiled a list of switches that don't
work with specific presets, and within what parameters, if some parameters
are in fact valid considerations?

Thanks,

Shel


__________________________________________________
Yahoo! - We Remember
9-11: A tribute to the more than 3,000 lives lost
http://dir.remember.yahoo.com/tribute
_______________________________________________
mp3encoder mailing list
[EMAIL PROTECTED]
http://minnie.tuhs.org/mailman/listinfo/mp3encoder

Reply via email to