Created
April 15, 2018 22:14
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Chrome MediaRecorder in H264
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| <!DOCTYPE html> | |
| <head> | |
| <script> | |
| var recordedChunks = []; | |
| var constraints = { | |
| audio: true, | |
| video: true | |
| }; | |
| var mediaRecorder = null; | |
| navigator.mediaDevices.getUserMedia(constraints).then(onMediaSuccess, function(errorCallback) { | |
| console.log(errorCallback); | |
| }); | |
| function onMediaSuccess(stream) { | |
| try { | |
| window.stream.getVideoTracks()[0].stop(); | |
| } catch (err) {} | |
| window.stream = stream; | |
| var gumVideo = document.querySelector('video#local'); | |
| gumVideo.src = window.URL.createObjectURL(stream); | |
| } | |
| function start() { | |
| var options = { | |
| mimeType: 'video/webm;codecs=H264' | |
| }; | |
| mediaRecorder = new MediaRecorder(window.stream, options); | |
| mediaRecorder.ondataavailable = onDataAvailable; | |
| mediaRecorder.start(1000); | |
| } | |
| function stop() { | |
| mediaRecorder.stop(); | |
| } | |
| function onDataAvailable(event) { | |
| if (event.data.size > 0) { | |
| recordedChunks.push(event.data); | |
| } | |
| } | |
| function download() { | |
| var blob = new Blob(recordedChunks, { | |
| type: 'video/webm' | |
| }); | |
| var url = URL.createObjectURL(blob); | |
| var a = document.createElement('a'); | |
| document.body.appendChild(a); | |
| a.style = 'display: none'; | |
| a.href = url; | |
| a.download = 'test.webm'; | |
| a.click(); | |
| window.URL.revokeObjectURL(url); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <button onclick="start()">record</button> | |
| <button onclick="stop()">stop</button> | |
| <button onclick="download()">download</button> | |
| <br> | |
| <video id="local" autoplay/> | |
| </body> | |
| </html> |
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It works in localhost or https only.