[MPlayer-users] Why create video in 1st pass?

Rich Felker dalias at aerifal.cx
Fri Nov 25 20:37:30 CET 2005

On Fri, Nov 25, 2005 at 10:05:57AM +0200, Tshepang Lekhonkhobe wrote:
> > > or do we get rid of (b) in which case the .VOB to .AVI conversion is
> > > done directly?
> >
> > Nope. You can trust me on this: don't try to save a bit of CPU time by
> > trying to reduce resource usage of a task probably that only takes
> > less than a percent of the total encoding process. Please read this
> > article: http://en.wikipedia.org/wiki/Amdahl's_law
> I actually meant to know if raw video is created during the whole
> process, and from your answers it appears like that. It also appears,
> from above answer, that it's possible to do it directly. How does one
> achieve that?

The questions you're asking don't make any sense and would not even be
questions if it weren't for the fact that you don't understand
anything of what's involved in the process of video encoding. I can
assure you that the way 2pass encoding is done is the most efficient
possible (in terms of overall dataflow and what data is processed) and
that there is nothing created that is not actually needed.


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