Video geometry distortion

Hi there,

I need an expert to get started with output video distortion.

I have a box that needs to display a roughly 4000px * 1000px window (it's basically a web page). The problem is that the image is then projected on a wall that is not really flat.
So basically, I'm wondering if I can find a piece of software that can take a video input and distort it before sending it to the graphic card so that the image looks flat on a weird wall.

I'm a complete newbie in that subject. I have studied hardware solutions where I just send one video signal to another machine that creates the distortion and then sends the new video signal to a projector. But it's quite expensive and the setup is a bit obscure and needs to be done by a specialist.

Any lead?

Thanks for your help.
Santiago

For starters, what's your system and video player?

All I can find so far is an avisynth module, which I'm unsure how one would use. Is that sort of thing what you're looking for though?

You know -- I'd be tempted to put the projector on its side and use its keystoning settings. Rotating video 90 degrees is much easier than arbitrarily keystoning it.

Hi Corona688,

Thanks for your reply.
My system is Debian Squeeze.
I'm trying to display firefox through an X window.
Avisynth looks like what I need.
On the other hand, what I'm trying to achieve is far too complicated and we're hiring another company to do it : At the very end, we have one video projector and a weird screen that is made of three parts with different inclines. So I wanted to create 3 X windows and distort each one so that it matches the corresponding part of the screen. That's also why your very smart last advice wouldn't work for me :D.

Regards
Santiago