making a filtergraph

		var half = duration/2.0;
		var s = options.size;
		var filters = [ // setpts=2.0*PTS,
			util.format("[0:v]setsar=sar=1[open]"),
			util.format("[1:v]trim=start=%s:end=%s,crop=in_h:in_h:(in_w/2)-(in_h/2):0,scale=%s:%s,setpts=PTS-STARTPTS,setsar=sar=1[player1]", 1, 3, s, s),
			util.format("[1:v]trim=start=%s:end=%s,crop=in_h:in_h:(in_w/2)-(in_h/2):0,scale=%s:%s,setpts=PTS-STARTPTS,setsar=sar=1[player2]", duration-2, duration, s, s),
			util.format("[2:v]setpts=PTS-STARTPTS,setsar=sar=1[horse1]"),
			util.format("[3:v]setpts=PTS-STARTPTS,setsar=sar=1[horse2]"),
			util.format("[4:v]setpts=PTS-STARTPTS,setsar=sar=1[close]"),
			util.format("[5:v]setpts=PTS-STARTPTS,setsar=sar=1[scratches]"),
			util.format("[open][player1][horse1][player2][horse2][close]concat=n=6[mix]"),
			util.format("[mix][scratches]blend=all_mode='overlay':repeatlast=1:all_opacity=1,fps=%s", options.fps)
		];

		// -tune film 
		var cmd = util.format('ffmpeg -y -i "%s" -i "%s" -i "%s" -i "%s" -i "%s" -i "%s" ', 
			FIRST_TITLE, self.original, HORSIES1, HORSIES2, END_TITLE, SCRATCHES);
		cmd += util.format('-filter_complex "%s" ', filters.join(";"));
		cmd += util.format('-an -c:v libx264 -preset %s -crf %s -an -pix_fmt yuv420p "%s"', 
			options.preset, options.crf, new_name);
		console.log(cmd);

		console.time(format)
		exec(cmd, function(error, stdout, stderr){
			console.timeEnd(format)
			if(error) return callback(error);

			fs.access(new_name, fs.R_OK, function (err) {
				if(err) return callback("failed to make "+format);
				self.local.push({path: new_name, format: format});
				self.save(callback);
				//exec(util.format('open "%s"', new_name));
			});
		});