On 1/03/2008, John posted this:

(I snipped a bit to answer just the one remark)

On a SL disc you have 4.7GB which is 37,600,000 kbit
yielding a desired average bitrate (audio + video) of 3190 kbit/s

Well, it shows as only 4.38 as being usable for me in NVE, so I guess
you can't use a full 4.7?
....
John

This is the old 1K = 1000 vs 1K = 1024 thing (and the analogous numbers
for Mega and Giga), mentioned many times on a number of newsgroups in
video and elsewhere.

Hard drive manufacturers use the "ten to the nth" versions of K, M, and
G (and now T), perhaps just to make their drives look bigger.

RAM makers and others use the "two to the nth" versions of K, M, and G
(and now T) because it matches the binary addressing schemes of memory
and other computer-related uses.

So, K = ten cubed for drive makers and K = two to the tenth for RAM
makers, and so forth.

Do the calculation for yourself and you'll see that 4.38 times 2**30 is
approximately 4.7 times 10**9 ("**" is the symbol for exponentiation -
raising to a power - in a number of computer languages).

--
Gene E. Bloch (Gino) letters617blochg3251
(replace the numbers by "at" and "dotcom")