QUOTE(Joe Bloggs @ Sep 10 2002 - 04:18 PM)
The details could be different--there are a lot of switches beside the bitrate setting... e.g. they would be different from just plain -b 320, for example.
I did a few tests and "--alt-preset insane", "--alt-preset cbr 320" and "--alt-preset 320" give me bit-to-bit identical results.