das hier ist mein code vllt hilft er dir ja auch
Code:

---

 var handle_var;

function skipper()
{
	while(media_playing(handle_var))
	{
		if(key_space == on)
		{
			media_stop(handle_var);
			fade_pan.visible = on;
			while(fade_pan.alpha > 0)
			{
				fade_pan.alpha -=2*time;
				wait(1);
			}
		}
		wait(1);
	}
}

function main
{
 handle_var = media_play(vid1,null,100);
 skipper();
 while(media_playing(handle_var))
 {
 	wait(1);
}
 level_load(level);
  fade_pan.visible = on;
			while(fade_pan.alpha > 0)
			{
				fade_pan.alpha -=2*time;
				wait(1);
			}
} 

---