[MPlayer-users] Optimize video output from tv card

[Krzysztof Duchnowski]

Michael pisze:

> The only think I am still fighting with is the mplayer options. I want to 
> position the video playback at 100,50 on a 800x600 screen. The video 
> resolution should be 640x480. If the video is of a different size, I would 
> like to resize it while keeping the original aspect ratio. Furthermore, if 
> the resulting video is smaller than 640x480 it would be great if black 
> borders would be added automatically.
> 
> I've tried nearly a hundred combinations of options. None delivered this. 
> The one that came closest, was -screenw 640 -screenh 480 -fs . However, in 
> this case -geometry 100:50 does no longer work, so the video is always on 
> the topleft side.
> 
> More fancy stuff such as -geometry 100:50 -vf dsize=640:480:0,expand=640x480 
> deliver not the expected result (mostly bigger video screens).
> 
> Does anybody know, what options would be best to attain the result I want?

Read about "-slave" option. Then you could use another instance of 
mplayer with "-vo null -frames 1 -identify" to identify media and then 
send appropriate command to enslaved MPlayer.
You could use BASH or Perl or Python to do that if you know any of them.

-- 
Krzysztof 'DK75' Duchnowski
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