[MPlayer-users] VOB aspect ratio mystery

[Nico Sabbi]

On Wednesday 11 February 2009 10:40:38 Pádraig Brady wrote:
> Hi,
>
> I'm wondering about how mplayer is performing some magic.
> I've a MPEG2 VOB with a 4:3 (aspect 2) encoded in the sequence
> header. This VOB is actually 16:9 and mplayer figures this out
> somehow, and prescales it correctly. Specifically the version that
> does this on my fedora 8 laptop is:
> MPlayer dev-SVN-r26936-4.1.2 (C) 2000-2008 MPlayer Team
> which if packaged as: mplayer-1.0-0.91.20080531svn.lvn8
>
> I had an older mplayer on ubuntu breezy that didn't notice
> it was 16:9 and played it squashed:
> MPlayer 2:1.0~rc1-0ubuntu13 (C) 2000-2006 MPlayer Team
>
> So I assumed it was new code added, so I downloaded the
> latest as shown below, but this doesn't notice it's 16:9 either?!
> MPlayer SVN-r28525-4.1.2 (C) 2000-2009 MPlayer Team
>
> So what's the first version above doing that the others aren't?
>
> cheers,
> Pádraig.
>
> p.s.
> I just downloaded and built this:
> http://www.mplayerhq.hu/MPlayer/releases/mplayer-export-snapshot.ta
>r.bz2 But that showed an old copyright year??
> MPlayer SVN-r28519 (C) 2000-2007 MPlayer Team
>

how can we know without log and sample to analyze?