Re: lame encoding woes

On mån, 2006-01-30 at 23:12 -0500, Edgarde Stokes wrote:
> Your command line parameters have a bit of a conflict in that:
> * "-b %b" sets a constant bitrate (%b is the number entered under
> "Config | Encode | Options | Encoding bitrate (kbits/s)" )
> * "-h" sets a variable bitrate (of high quality).

That's not entirely true.
-h sets high quality, it is equal to the -q 2 switch, and it can be used
both with CBR and VBR, although it is always automatically enabled when
encoding with VBR. 

> Using your parameters I get a full-sized MP3 file of 128 kb/s CBR, so
> apparently -b is overriding -h (at least for bitrate).

Nope. The problem is the bitrate of 190 kbps, which is not supported by
lame, and probably not by any mp3 software. The bitrate should be set to
192 kbps, that will probably make more sense to the encoder.

> I think you negate the benefit of the -h parameter with -b following
> it. You probably want to remove "-b %b" from your parameter string.
> However, if you need high-quality CBR, you have the option of
> increasing the bitrate under Encode Options.

As I said, -h does not exclude the use of CBR.
For instance, my encoder command line is set to this:
-p -m j -h -b %b %w %m
and my bitrate under "options" is set to 192 kbps.
My mp3s always come out the way they're supposed to, that is, in
joint-stereo, with 192 kbps CBR, high quality and CRC. :)

> (Generally, high-quality CBR is only needed for MP3 streaming applications.)

Or for those of us who just likes the bitrate display not flickering
between lots of numbers all the time. :)

-- 
.--------------------------
| Daniel Liikamaa
| [email protected]


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