//------RECORDER
				var recorder;
				var stream
				var dDownload = document.getElementById("idDownloader");
				var isRec=false;

				function doStart(){
					if(isRec)return;
					stream = mycanvas.captureStream();
					const options = {
				        audioBitsPerSecond: 128000,
				        videoBitsPerSecond: 2500000,
				        mimeType: "video/webm;codecs=vp9"
				    }
				    
					recorder = new MediaRecorder(stream,options);
					//recorder = new MediaRecorder(stream, {mimeType:"video/mp4;codecs=\"avc1.4D401E, mp4a.40.2\""});
					//{mimeType:"video/webm;codecs=vp9"}
					recorder.ondataavailable = function(e) {
						var videoBlob = new Blob([e.data], { type: e.data.type });
						blobUrl = window.URL.createObjectURL(videoBlob);
						dDownload.download = "ar-filter-video.webm";
						dDownload.href = blobUrl;
						dDownload.style.display = "block";
					}
					recorder.onerror = (event) => {
				        alert("error!")
				    };
				    
					recorder.start();
					videoStatus("status:now recording ...");
					$("#bStart").removeClass("pure-button");
				    $("#bStart").addClass("pure-button-off");
				    $("#bEnd").removeClass("pure-button-off");
				    $("#bEnd").addClass("pure-button");
				    dDownload.style.display = "none";
					isRec=true;
				}
				function doEnd(){
					if(!isRec)return;
					recorder.stop();
					$("#bEnd").removeClass("pure-button");
				    $("#bEnd").addClass("pure-button-off");
				    $("#bStart").removeClass("pure-button-off");
				    $("#bStart").addClass("pure-button");
				    videoStatus("status:recording finished. Please click download link.");
				    isRec=false;
				}
				
				
				//------SNAPSHOT
				var dllink = document.getElementById("idSnap");
				var filename = "ar-filter-snapshot.png";
				

				function capSave(){
				
					document.getElementById("sndShutter").play();
					if (mycanvas.msToBlob) {
						var blob = mycanvas.msToBlob();
						window.navigator.msSaveBlob(blob, filename);
					} else {
						dllink.href = mycanvas.toDataURL("image/png");
						dllink.download = filename;
						dllink.click();
					}
					
				}