[MPlayer-users] mencoder/xvid: issues with forced PAR using a DXN profile

[Jarek Czekalski]

  Looks like there is a problem in xvidenc. It goes like this:

     frame->par = XVID_PAR_11_VGA; /* Default */

     if( !(selected_profile->flags & PROFILE_DXN) )
     {/* here is par being set in different manners */...}

So choosing a DXN profile leads to par11 as you have discovered. Maybe 
you should try to set the encoding parameters by hand: interlacing, max 
bvop=1, without choosing a profile. That may be a workaround.

My experience with fixing xvid encoding problems with mplayer team is 
negative, so I doubt they will do anything about it. Especially when it 
regards interlacing encoding, as the profile dxnhtpal does.

Regards
Jarek



W dniu 10/03/2010 03:55 PM, Daniel Klaffenbach pisze:
> Hi,
>
> I am trying to convert some DVDs for my hardware DivX-Players using mencoder.
> I'm using the "profile=dxnhtpal" option to make sure that the files can be
> played back on my devices.
>
> I noticed a little problem with this setting though: when encoding videos the
> PAR gets forced to 0/0:
> "xvid: par=0/0 (vga11) forced by choosing a DXN profile"
>
> This leads to problems on my devices concerning the aspect ratio of the
> encoded movie. Mplayer plays the encoded file with the correct aspect ratio,
> but neither VLC, nor my hardware DivX-Players use the correct aspect ratio.
>
> I already experimented with some xvidopts (autoaspect and aspect ) and with
> force-avi-aspect but this did not change anything. I tracked the problem down
> to the PAR being forced to 0/0.
>
> Without forcing the PAR to 0/0 (which means without using a DXN profile), the
> files play correctly on all of my players (VLC, Panasonic hw player, Philips hw
> player, Panasonic TV).
>
> Is there any reason why the PAR is forced to 0/0 with a DXN profile? Could this
> possibly be prevented with a xvidopt?
>
>
> - Daniel
>
>
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