Video not autoplaying inspite of using "autoplay" in the video tag of HTML

Question

The code snippet is given below. I have used impress.js to create an online presentation. I want to insert a video in the last slide which autoplays when the slide comes up. But I am unable to implement that. Can anyone please help me with this?

<div class="step box" data-x="0" data-z="4000" data-rotate-y="0">

<video width="800" height="600" controls autoplay>
   <source src="electric_bulb_hd_stock_video.mp4" type="video/mp4">
    Your browser does not support HTML5 video.
</video>

</div>

Answer 1

In impress.js, the DOM prevent video to autoplay, but you can use API, like this:

var videoStep = document.getElementById("video-step");
var video = document.getElementById("video");
videoStep.addEventListener("impress:stepenter", function(){
    video.play();
}, false);
videoStep.addEventListener("impress:stepleave", function(){
    video.pause();
}, false);

HTML:

<div id="video-step" class="step" data-x="-50000" data-y="2000" data-z="-60000" data-scale="6">
    <video id="video" width="420" height="340" autoplay>
        <source src="video/test.webm" type="video/webm">
    </video>
</div>

With the code above, when you enter this step, the video will play automatically, and it will pause when you leave this step. Give it a try :)

Answer 2

Try autoplay="autoplay"

http://www.w3schools.com/tags/att_video_autoplay.asp

It should work.