[MPlayer-users] problems with NTSC

[Dominik Szczerba]

|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)...

thanks!
Domi



Arpi wrote:

>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>Hi,
>
>don't use -pass with lavc, use -lavcopts vpass= instead
>-pass is for divx4 codec
>
>
>  
>
>>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>>Hi,
>>
>>So the movie is here. I did:
>>
>>cat *.vob | nice -n 19 mencoder -oac mp3lame -lameopts cbr:br=128:aq=2 
>>-ovc frameno -ofps $FPS -o fr
>>ameno.avi -
>>cat *.vob | nice -n 19 mencoder -oac copy -ovc lavc -lavcopts 
>>vcodec=mpeg4:vbitrate=$BR:vhq:vqmin=2:
>>vqmax=15:keyint=250 -ofps $FPS -vop scale=640:360,crop=698:476:12:2 -sws 
>>2 -pass 1 -o movie.avi -
>>cat *.vob | nice -n 19 mencoder -oac copy -ovc lavc -lavcopts 
>>vcodec=mpeg4:vbitrate=$BR:vhq:vqmin=2:
>>vqmax=15:keyint=250 -ofps $FPS -vop scale=640:360,crop=698:476:12:2 -sws 
>>2 -pass 2 -o movie.avi -
>>
>>I got a good movie, with no sync problems, but the movie is twice as big 
>>as I calculated! I had it also when using 29.xx fps! (but with 24.xxx I 
>>saw much less spam like this:  duplicate 1 frame(s)!!! Pos:2005.6s  
>>48068f (97%)  11fps Trem:   1min 1338mb  A-V:0.000 [5335:128])
>>
>>My calculations:
>>
>>A = 120kbps*60sec*55min =48MB
>>V = 1700kbps*60sec*55min=633MB
>>
>>together they should not be 1.4 GB!!! And yes, mplayer says over the 
>>encoded movie:
>>
>>VIDEO:  [DIVX]  640x360  24bpp  23.98 fps  5269.0 kbps (643.2 kbyte/s).
>>
>>WHY??? What am I doing wrong? Please...
>>
>>bye
>>DS
>>
>>D Richard Felker III wrote:
>>
>>    
>>
>>>By warn, I mean all the duplicate/skipped frame messages that spam
>>>your console. You should get very few (or better yet none) of those of
>>>your -ofps is right.
>>>
>>>      
>>>