Vorbis dev - Dec 2003 - overhead ??

Someone could tell me the question about the question about lacing values
values of segments.
I mean i know what happens about segmentation but reading ogg specs
i didn't understand this lines:

"We simply add the lacing values for the total size; the last lacing value
for a packet is always the value that is less than 255. Note that this
encoding both avoids imposing a maximum packet size as well as imposing
minimum overhead on small packets (as opposed to, eg, simply using two
bytes at the head of every packet and having a max packet size of 32k.
Small packets (<255, the typical case) are penalized with twice the
segmentation overhead). Using the lacing values as suggested, small
packets see the minimum possible byte-aligned overheade (1 byte) and large
packets, over 512 bytes or so, see a fairly constant ~.5% overhead on
encoding space."

Pls could someone let me understand?
tnx a lot.

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On Sat, Dec 06, 2003 at 01:13:50AM +0100, Francesco Gadaleta wrote:
> "We simply add the lacing values for the total size; the last lacing
value
> for a packet is always the value that is less than 255. Note that this
> encoding both avoids imposing a maximum packet size as well as imposing
> minimum overhead on small packets (as opposed to, eg, simply using two
> bytes at the head of every packet and having a max packet size of 32k.
> Small packets (<255, the typical case) are penalized with twice the
> segmentation overhead). Using the lacing values as suggested, small
> packets see the minimum possible byte-aligned overheade (1 byte) and large
> packets, over 512 bytes or so, see a fairly constant ~.5% overhead on
> encoding space."
This paragraph gives motivation for the method of marking packet length. What is
unclear? I'm
happy to elaborate, you do not say what is it you would like explained.

 -r
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