[XviD-devel] two lame questions

[suxen_drol]

On Wed, 22 Jan 2003 19:51:04 -0000 "Helder Aranha" <hmcpa@ctt.inesc.pt> wrote:

> Hi list
> 
> 1. Encoding stats.
> Does xvidenc produce a stats file for each file encoding? If so, is there a
> default directory for it?

no. its just an example/debug to demonstrate how xvid works.
2-pass (and therefore stats files) are only support by the vfw frontend
and gomz libxvidvbr (transcode).

> 2. 1st pass and 2nd pass
> what's the difference? a 2nd pass refines the results from 1st pass? If
> you're doing real-time encoding (like for streaming live video), can/should
> you use 2nd pass?

2pass cannot be used to real-time encoding. the idea behind two pass is
to maximize quality for a target storage size (ie. ~600megabytes...).

xvid 2pass guide is available here:
http://forum.doom9.org/showthread.php?threadid=36915&pagenumber=4

and dirk's older xvid options guide:
http://roeder.goe.net/~koepi/ 

a technical description of 2pass encoding: 
http://www.research.ibm.com/journal/rd/434/westerink.html

> Don't flame on this, but the documentation is not very clear on the subject
> (ie, it's not lame-proof :)

here:
http://doom9.org

-- pete; life is like a box of ammo