Capturing a still image from a video stream with opentok

Can someone explain what is the main container for the image element in the provided code snippet? I couldn't find any clear explanation on the tutorial website, so insight on how this specific section of code operates would be greatly appreciated.

var imgData = publisher.getImgData();
var img = document.createElement("img");
img.setAttribute("src", "data:image/png;base64," + imgData);

// Need to identify the parent DIV for the img here
document.getElementById("containerId").appendChild(img);

Answer №1

The main element appears to be labeled as containerId. Make sure there is an element in the html with that specific id attribute:

<div id="containerId"> </div>

If you wish, you can still showcase the captured snapshot without referencing the parent id. All you have to do is attach your img element directly to the document body:

document.body.appendChild( img );

Best of luck!

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