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@dtipson
Last active July 26, 2017 19:44
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Save dtipson/4ff1f55fb194f1024a445a0c457a1ead to your computer and use it in GitHub Desktop.
Can run in console on any https site on Chrome/Firefox
document.body.innerHTML = '';
const delay = milliseconds => x => new Promise(resolve => setTimeout(resolve, milliseconds, x));
//requestRecord :: Object (optional) -> Promise Stream
const requestRecord = (config={video:true, audio:true}) => {
return navigator.mediaDevices && navigator.mediaDevices.getUserMedia ?
navigator.mediaDevices.getUserMedia(config).then(delay(1400)) : // delay avoid startup flash
Promise.reject('no support for getUserMedia');
};
const createVideo = videoURL => {
console.log('creating video w/', videoURL);
var video = document.createElement('video');
video.addEventListener('error', e => {
console.log('video play error', e, video.error);
}, true);
video.controls = false;
video.className = 'grid-video';
video.autoplay = false;
video.muted = true;
video.loop = true;
video.style.maxWidth = '100vw';
video.style.maxHeight = '99.7vh';
video.style.width = '100%';
video.style.objectFit = 'cover';
video.src = videoURL;
video.onloadedmetadata = function(e) {
video.play();
}
return video;
};
const streamToBlobUrl = stream => {
return window.URL.createObjectURL(stream);
};
const appendToBody = el => {
document.body.appendChild(el);
return el;
}
requestRecord()
.then(streamToBlobUrl)
.then(createVideo)
.then(appendToBody)
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