fast video screenshot, use offscreencanvas and webworker to speed screenshot。 if browser not support offscreencanvas api, it will fall back to canvas。
html example:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<video src="https://www.runoob.com/try/demo_source/movie.mp4"></video>
<script type="module" src="../lib/capture-img-factory.js"></script>
<script type="module">
import CaptureImgFactory from '../lib/capture-img-factory.js';
let ins = CaptureImgFactory.getImpl({
sourceElement: document.querySelector('video'),
width: 720,
height: 1080
});
setInterval(() => {
ins.capture({
cb: (data) => {
console.log('screenshot:', data);
}
})
}, 1000);
</script>
</body>
</html>more detail please look /example
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