[Lame-dev] weird question--VBR vs. 320k

[A. C. <nom...@gm...>]

Ok, this is kind of a weird issue, but I wasn't paying too much attention to
the command line options I set for LAME in grip, and ended up ripping and
encoding a significant number of CDs with a variable bit rate (at V0) AND a
minimum bitrate of 320k.  Kind of pointless.  

I then tried ripping two files with CBR and a minimum bitrate of 320k just
to see the difference, and the file it created was exactly the same size as
the VBRed one.  So then I use the cmp command to see what the difference was
and I got:
[the first two files] differ: byte 2080, line 2
[the second two files] differ:  byte 2289, line 2

I know very little about the actual mp3 format; does this byte designate
whether it's CBR or VBR?   

I know it seems strange to obsess over a single byte, but I wanted archive
quality for these songs, so I was hoping for perfect encoding, and like I
said I know very little about the mp3 format so I'm not sure if there will
be any difference in how mp3 players handle the files.  I tried playing both
in VLC and the VBRed one seems to use slightly more processor time, but top
is sufficiently imprecise that I couldn't be sure.

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