[Mplayer-dev-eng] Matrox dualhead and syncfb.

[Felix Buenemann]

On Dienstag,  1. Mai 2001 23:04 you wrote:
> On Tue, 1 May 2001, Felix Buenemann wrote:
> > On Dienstag,  1. Mai 2001 22:07 you wrote:
> > > > 	Well, 960 = 16/9 / (4/3) * 720, that is I was considering aspect
> > > > ratio of my screen (1600x1200). But anyway, how can I get wider
> > > > images? That is if I have 1600x1200 resolution when I want to play a
> > > > DVD that is 16:9 I should make it follow a 4:3 ratio, because my
> > > > screen change it to 4:3*4:3 = 16:9, I'm right? I'm really puzzled now
> > > > ...
> > >
> > > -aspect switch should only care for video size not for screen res
> > > (that's done by vo plugin), so I calculate aspect by 9:16 = 0.5625 *
> > > 720 = 405 (->720x405) or the other way around 16:9 = 1.7777777777 * 576
> > > = 1024 (1024x576), if you devide 720/16 and 405/9 you both get 45 and
> > > for 1024/16 and 576/9 you get both 64. I think this is correct, but
> > > maybe I'm mistaken
> > >
> > > :) (I repeat screen sapect should be taken care of by output plugin as
> > > : it
> > >
> > > decides target resolution).
> >
> > Just did some calculation using your math and think it comes out to the
> > same result: 1.85/1 / (1280/1024) * 720 = 1066 now split it up so screen
> > resolution calc can be done by libvo: 1.85/1 * 720 = 1332 second step is
> > 1024/1280 = 0.8 * 1333 = 1066 voila. Now as I do it the other way around
> > that's 720/1066 = 0.6756 * 576 = 389. Now if I look at what mplayer
> > -aspect 1.85:1 does: "VO: [sdl] 720x576 => 720x389  YV12".
> > So do you see something incorrect in this? Or have I missed calculating
> > for proper screen res in second way? (looking at it 720x389 looks very ok
> > -> very round flashlight in the matrix [no egg])
> > (I'm getting slightly confused =)
>
> 	So, the problem is that I get the wrong version from your email??
> Just pasted from mplayer output:
>
> Aspect: Destination: 720x368
> Aspect: X: 1.850000
> Aspect: Y: 1.000000
> VO: [fbdev] 720x368 => 720x389  BGR32
>
Erm, 720x368? DVD-res is 720x576, how do you get those values?

> 	What I'm doing wrong?? Maybe you should first calculate image
> properties? Or it is just 'not-desirable' to change aspect or not standard
> images?
>
> 	- german
>

-- 
Best Regards,
   Felix

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