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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script type="text/javascript"> | |
| 'use strict'; | |
| (function(){ | |
| var frameStore = {}; | |
| function toggle_visibility() { | |
| function toggle(id){ | |
| var el = document.getElementById(id); | |
| el.style.display = el.style.display==='none' ? 'block' : 'none'; | |
| } | |
| for(var i=0; i<arguments.length; ++i){ | |
| toggle(arguments[i]); | |
| } | |
| } | |
| function startRecording(stream, videoElementId, canvasElementId) { | |
| frameStore[videoElementId] = []; | |
| var mediaElement = document.querySelector(videoElementId) | |
| mediaElement.src = URL.createObjectURL(stream); | |
| var canvas = document.querySelector(canvasElementId) | |
| toggle_visibility(canvasElementId.substr(1)); | |
| setTimeout(function(){toggle_visibility(canvasElementId.substr(1));}, 4000); | |
| var context = canvas.getContext('2d'); | |
| mediaElement.addEventListener('play', function(){ | |
| draw(this,context,320,180, frameStore[videoElementId]); | |
| },false); | |
| } | |
| function draw(v,c,w,h,store) { | |
| if(v.paused || v.ended) return false; | |
| c.drawImage(v,0,0); | |
| var data = c.getImageData(0, 0, w, h); | |
| store.push(data); | |
| if(store.length > 100) { | |
| c.putImageData(store[store.length-100], 0, 0); | |
| store.shift(); | |
| }; | |
| setTimeout(draw,40,v,c,w,h,store); | |
| } | |
| function init() { | |
| navigator.getMedia = ( navigator.getUserMedia || | |
| navigator.webkitGetUserMedia || | |
| navigator.mozGetUserMedia || | |
| navigator.msGetUserMedia); | |
| navigator.getMedia ( | |
| // constraints | |
| { | |
| video: { | |
| mandatory: { | |
| maxFrameRate: 25, | |
| maxWidth: 320, | |
| maxHeight: 180 | |
| } | |
| }, | |
| audio: false | |
| }, | |
| // successCallback | |
| function(localMediaStream) { | |
| startRecording(localMediaStream, "#myvideo1", "#c1"); | |
| startRecording(localMediaStream, "#myvideo2", "#c2"); | |
| startRecording(localMediaStream, "#myvideo3", "#c3"); | |
| startRecording(localMediaStream, "#myvideo4", "#c4"); | |
| startRecording(localMediaStream, "#myvideo5", "#c5"); | |
| startRecording(localMediaStream, "#myvideo6", "#c6"); | |
| startRecording(localMediaStream, "#myvideo7", "#c7"); | |
| startRecording(localMediaStream, "#myvideo8", "#c8"); | |
| startRecording(localMediaStream, "#myvideo9", "#c9"); | |
| startRecording(localMediaStream, "#myvideo0", "#c0"); | |
| }, | |
| // errorCallback | |
| function(err) { | |
| console.log("The following error occured: " + err); | |
| console.log(err); | |
| } | |
| ); | |
| } | |
| document.addEventListener('DOMContentLoaded', init); | |
| })(); | |
| </script> | |
| <style type="text/css"> | |
| .video-holder { | |
| position:relative; | |
| width:100%; | |
| } | |
| .thevideo { | |
| position:absolute; | |
| width:320px; | |
| height:180px; | |
| } | |
| .c { | |
| /*position:absolute;*/ | |
| top: 0; | |
| bottom: 0; | |
| left: 320px; | |
| right: 0; | |
| margin-left: 320px; | |
| width: 320px; | |
| height: 180px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <p>Accept permission to use camera</p> | |
| <div class="video-holder" > | |
| <video id="myvideo1" class="thevideo" autoplay ></video> | |
| <canvas id='c1' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo2" class="thevideo" autoplay ></video> | |
| <canvas id='c2' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo3" class="thevideo" autoplay ></video> | |
| <canvas id='c3' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo4" class="thevideo" autoplay ></video> | |
| <canvas id='c4' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo5" class="thevideo" autoplay ></video> | |
| <canvas id='c5' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo6" class="thevideo" autoplay ></video> | |
| <canvas id='c6' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo7" class="thevideo" autoplay ></video> | |
| <canvas id='c7' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo8" class="thevideo" autoplay ></video> | |
| <canvas id='c8' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo9" class="thevideo" autoplay ></video> | |
| <canvas id='c9' width="320" height="180" class="c" /> | |
| </div> | |
| <div class="video-holder"> | |
| <video id="myvideo0" class="thevideo" autoplay ></video> | |
| <canvas id='c0' width="320" height="180" class="c" /> | |
| </div> | |
| </body> | |
| </html> |
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