[MPlayer-users] Re: problem encoding a compliant DVD from an XviD source movie

[Giacomo Comes]

On Sun, Apr 15, 2007 at 11:11:55PM -0300, Prabu(A.G.Oliveira) wrote:
> 
> John Brown wrote:
> 
> >I normally perform my calculations as follows ......
> >
> >(...) In short I would use the following options:
> >
> >-vf crop=592:336,scale=672:336,expand=720:480,harddup -lavcopts
> >vcodec=mpeg2video:...:aspect=4/3:...
> >
> ----------------------------------
> Giacomo Comes wrote:
> 
> >In the TOOLS directory of the MPlayer source there is a script
> >called encode2mpeglight. Make the mpeg with it and it will be watchable 
> >on your dvd player.
> >
> >Use a the command line like:
> >
> >encode2mpeglight -o <your name> <your source> -n n -dvd -encode 6:3:2 
> >-mpegfixaspect and you are done.
> 
> 
> Hi everybody!!  thanks a lot for your attention!!
> 
> specially you guys -->    John and  Giacomo.
> 
> I have spent this Sunday studding both of your suggestions to solve my 
> problem:
> 
> I've found the Giacomo's script, a very good tool and I'll keep it, but 
> even so,
> I still could not achieve the aimed result!
> I'm certain that it must have created a compliant DVD otherwise it would 
> not play,
> but I still had an image on TV displayed beyond the screen dimensions. 
> Too big!
> loosing information on top, right, bottom, and left sides, being impossible
> to see  the subtitles. (!? Mistery!! do I blame the DVD player or the 
> TV-set ?!)

None of them. It's normal that the TV does not show the edge of the video.
Depending of the TV you can miss between 5 and 10% of the video image.

You can overcome this problem with encode2mpeglight using the option
-overscan like:
  -overscan 5
or
  -overscan 10

You can experiment with several values of the argument and use the one 
that satisfies you.

Giacomo

> 
> So the best result I was able to get with John's advice.
> ( Thanks!!! finally, an acceptable encoding )
> 
> After several tests, here is the command line that I found the best to
> encode the "Lost.avi" to play on TV without loosing information:
> 
> mencoder -oac lavc -ovc lavc -of mpeg \
> -mpegopts format=dvd:tsaf:telecine \
> -vf crop=608:336,scale=656:-10,expand=720:480::46,harddup \
> -srate 48000 -af lavcresample=48000 \
> -lavcopts acodec=ac3:abitrate=192:\
> vcodec=mpeg2video:vrc_buf_size=1835:\
> vrc_maxrate=7500:vbitrate=2400:keyint=18:aspect=4/3:\
> vstrict=0 -ofps 24000/1001 -subfps 24000/1001 \
> -sub lost.srt -subfont-text-scale 2.5 -subpos 94 -o lost.mpg lost.avi;
> 
> as you can see the solution was to expand black bands all around the scene.
> 
> (I changed the offset of the expanded image to get a better area for the
> subtitles and also changed the offset of subtitle with "-subpos 94",
> but it's not really necessary, the film played ok without these options)
> 
> ;^]   bye!   -- dvdauuuuthoooor!!!  here I go!!!
>