Thanks for your response ^^

I found how to do this.

Code:
#include <acknex.h>
#include <default.c>
#include <mtlView.c>

//****** Function main ******

void main()
{
	video_set(1920,1080,0,1);
	level_load("level.wmb");
	
	mtl_blur.skill11 = 25;
	pp_set(camera,mtl_blur);
	
	pp_add(mtl_sepia);
}