With this engine it is possible to detect motion in a video stream. The output is a motion score. In addition, a box can be drawn around the moving parts of the video to make them visible.
<script src="https://cdn.jsdelivr.net/npm/motiondetector@1.0.3/index.min.js"></script>Example in detailed form at GitHub-Example-Repo or live in action motiondetector.wntzn.com
<body>
<!-- for the output -->
<canvas id="motion-canvas"></canvas>
<canvas id="capture-canvas"></canvas>
<span id="motion-score">???</span>
<!-- setting the sensitivity with slider -->
<input id="slider" type="range" min="10" max="100" value="32"/>
<script src="https://cdn.jsdelivr.net/npm/motiondetector@1.0.3/index.min.js"></script>
<script>
settings = {
motionCanvasRef: document.getElementById("motion-canvas"),
captureCanvasRef: document.getElementById("capture-canvas"),
scoreRef: document.getElementById("motion-score")
};
const motionDetector = new MotionDetector(settings);
motionDetector.start();
const slider = document.getElementById("slider");
slider.addEventListener("change", () => motionDetector.settings.sensitivity = slider.value);
</script>
</body>