How To Take A Photo Of An Video Stream? Html5 Javascript

When using (HTML), you can use canvas = document.getElementById('canvas') in the script (Javascript) and videoID.play() or videoID.pause(

Solution 1:

Set .getContext("2d") should be called on canvas element, not acontainer; pass img reference as first parameter to .drawImage() instead of acontainer; .toDataURL() should be called on canvas element, not acontainer.

var blue = "data:image/png;charset=binary;base64,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";

var red = "data:image/png;charset=binary;base64,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";

var green = "data:image/png;charset=binary;base64,iVBORw0KGgoAAAANSUhEUgAAAScAAADBCAYAAACNMHZqAAAABHNCSVQICAgIfAhkiAAAApJJREFUeJzt1DEBwCAQwMCnynEOBrqT4U5BpqzZcwYg5nsdAPDHnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUgyJyDJnIAkcwKSzAlIMicgyZyAJHMCkswJSDInIMmcgCRzApLMCUi6PDoDAbyCsn8AAAAASUVORK5CYII=";

var arr = [red, blue, green];

var img = document.querySelector("img");

var button = document.querySelector("button");

var containerImg = document.querySelector("div > img");

var canvas = document.createElement("canvas");

canvas.width = canvas.height = 100;

var ctx = canvas.getContext("2d");

var i = 0;

button.addEventListener("click", function() {
  ctx.drawImage(img, 0, 0)
  containerImg.src = canvas.toDataURL();
});

setInterval(function() {
  img.src = arr[i];
  i = ++i % arr.length;
}, 100);

<button>capture image</button><br><br><imgwidth="100"height="100"alt="stream"/><br><br><div><imgwidth="100"height="100"alt="capture"/></div>