Created
January 16, 2021 00:31
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// 1. paste this section to start recording | |
let mediaRecorder; | |
let recordedBlobs = []; | |
function handleDataAvailable(event) { | |
console.log('handleDataAvailable', event); | |
if (event.data && event.data.size > 0) { | |
recordedBlobs.push(event.data); | |
} | |
} | |
let options = {mimeType: 'video/webm;codecs=vp9,opus'}; | |
if (!MediaRecorder.isTypeSupported(options.mimeType)) { | |
console.error(`${options.mimeType} is not supported`); | |
options = {mimeType: 'video/webm;codecs=vp8,opus'}; | |
if (!MediaRecorder.isTypeSupported(options.mimeType)) { | |
console.error(`${options.mimeType} is not supported`); | |
options = {mimeType: 'video/webm'}; | |
if (!MediaRecorder.isTypeSupported(options.mimeType)) { | |
console.error(`${options.mimeType} is not supported`); | |
options = {mimeType: ''}; | |
} | |
} | |
} | |
let vidWin = document.getElementsByTagName('video')[0]; | |
mediaRecorder = new MediaRecorder(vidWin.srcObject, options); | |
mediaRecorder.ondataavailable = handleDataAvailable; | |
mediaRecorder.start(); | |
// end section 1 | |
// 2. paste this line to start recording | |
mediaRecorder.stop(); | |
// end section 2 | |
// 3. paste this section to download the recording | |
const blob = new Blob(recordedBlobs, {type: 'video/webm'}); | |
const url = window.URL.createObjectURL(blob); | |
const a = document.createElement('a'); | |
a.style.display = 'none'; | |
a.href = url; | |
a.download = 'test.webm'; | |
document.body.appendChild(a); | |
a.click(); | |
setTimeout(() => { | |
document.body.removeChild(a); | |
window.URL.revokeObjectURL(url); | |
}, 100); | |
// end section 3 |
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