[MPlayer-users] problems with NTSC

[D Richard Felker III]

On Fri, Nov 01, 2002 at 05:58:48PM +0000, Dominik Szczerba wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> |Hi,
> Thanks for an email.
> 
> It was pre6 that was screwing up the video size in the second pass with 
> my NTSC dvd. I installed pre9 and the problem is gone, correct size is 
> generated.
> 
> As to passes, this is from TFM ;) on the webpage:
> 
>    mencoder -dvd 2 -ovc lavc -lavcopts vcodec=mpeg4:more_options -oac 
> copy -o movie.avi -pass 1
>    mencoder -dvd 2 -ovc lavc -lavcopts vcodec=mpeg4:more_options -oac 
> copy -o movie.avi -pass 2|
> 
> and it seems to finally work, so I am confused now...?
> 
> OK, I will use your option, but 1) why is it in TFM and 2) does -pass 
> screw up my result in some way? Or it just doesnt do anything, just 
> rewriting avi from scratch (I do see divxpass file being written and 
> then read back)...

It will screw up bad and/or crash if you enable B frames, and it will
produce much worse results than lavc's internal 2pass code. DO NOT USE
-pass!

Rich