On Wed, May 31, 2000 at 10:39:52PM -0500, Mark Taylor wrote:
> There are now 3 VBR modes:
>
> 1. the current version (default)
>
> 2. -Y enables the true noise shaping VBR mode. It should give
> similar results to #1, but be much faster. Faster because it
> does not use the outer_loop() iterations scheme, but computes
> each scalefactor directly and then does just one quantization
> at the very end.
>
> I'm hoping #2 will replace #1 soon. But I still dont trust either
> of these algorithms. Does anyone have examples of a 128kbs(average) VBR
> sounding better than a 128kbs CBR?
>
> 3. "safe VBR". This mode is really CBR, but it keeps the bit
> reservoir as small as possible and uses VBR to achieve
> an unlimited bit reservoir. When the target bitrate is
> (for example) 128kbs, it will produce files slightly larger
> than 128kbs, but *always* sound better than 128kbs CBR.
> it also runs just as fast as CBR :-)
> if you want to try it out, change the #undef SAFE_VBR to
> #define SAVE_VBR in quantize.c
Mark,
I am in the process of making MP3s of all of my CDs, and using lame3.83
to do it. I want my files to be about 1MB/min in general and possibly
larger if I can hear differences (that bother me) (most of the time I can't).
Anyway, I've been doing extensive research and discovered that lame is
the way to go (do you agree? - or should I wait until there's a finished
more polished version?) but I cannot figure out what command line
options I should use, or which of these modes you mention above is the
best to encode my hundreds of CDs with...
Also the note above about you not trusting 128kbps VBR to sound better
than 128kbps CBR really bothers me. I thought VBR is the way to go.
Can you make me some recommendations?
Charlton
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