Mine

function insertclip(clip clip1, clip clip2, int framebefore, int frameafter) 
{
	new = clip1.Trim(0,framebefore).ConverttoYV12()
	middle =  clip1.Trim(framebefore+1,frameafter-1).ConverttoRGB32()
	end = clip1.Trim(frameafter,0).ConverttoYV12()
	middleadded = Layer(middle, clip2).ConverttoYV12()
	good = new + middleadded + end
	return good
}

vid = AVISource("C:\BT-Downloads\Fansub\Encoding\beet02\big.avs")
afx = AVISource("C:\BT-Downloads\Fansub\Encoding\beet02\OpeningOverlayRev2.avi")
afx2 = AVISource("C:\BT-Downloads\Fansub\Encoding\beet02\not-me.avi")

merge = insertclip(vid,afx,-1,405)
merge2 = insertclip(merge,afx2,3179,3529).changefps(23.976)
return merge2