[MPlayer-users] Xinerama fullscreen

[Ilja Kamps]

On Tue, Mar 04, 2008 at 08:42:28PM +0100, Andre Colomb wrote:
> Hi folks!
> 
> I'm using two 4:3 monitors side by side with xinerama, which makes a
> total aspect ratio of 8:3 or 2.33:1. It fits nicely with widescreen
> (2.35:1) movies and I recently discovered the "-xinerama -2" option,
> scaling the movie across both screens.
> 
> Now, with 16:9 aspect ratio movies, the picture is split in half across
> the screens with black bands on the sides. Is there a way to move it to
> one side of the whole xinerama screenspace so that most of it would be
> on the left screen for example?
> 
> There are several motivations for this kind of behaviour:
> 1. Both screens partially blank is IMO worse than one completely used
> and the other only partially.
> 2. The most interesting parts of a movie are usually happening in the
> center of the picture, so it shouldn't be split just there.
> 3. Some graphics cards (like Nvidia with their proprietary driver)
> cannot sync the video overlay to both monitors' VSync. Therefore, one
> screen is bound to flicker and the less picture space is on that screen,
> the less you will notice it.
> 
> I tried using -xy 2560 (for 2*1280 width), but it eventually scales to a
> height exceeding the screen height. Could this option be changed to
> specify a maximum height as well, like ImageMagick's "-resize 2560x1024"
> option?

I'd suggest using the expand vf to move it left by filling up the right
space with empty, so in your case -vf expand=::0:0::8/3:16 or something like that.