Change Video in IMAC DEVICE

Hi and happy new year,

when creating a new page I have managed to put a video in the IMAC DEVICE - now the problem I can not change the Video.

Does somebody had this case and perhaps has a solution?

Change pictures in IMAC DEVICE is no problem it works perfect.


Not sure if the following strategy can be adapted to your needs or not. Implementation is a bit crude, but then, I’m not a programmer. Basically, I create a Blocs web page using HTML5 code to pre-load the first video. (In my case, I am displaying chapter serials.) The user can either watch the initial video or select another from a pop-up menu. Once an alternate target video is selected, its URL reference and a poster frame are re-loaded into the original player window using a button to call the self-contained script included in the code snippet. See sample code below:

<video id="myVideo" width="100%" height="100%" poster="/img/Marvel.jpg" controls="">
<source src="" type="video/mp4">
Your browser does not support the video tag.
<select id="chapter">
<option value="">Chapter 1</option>
<option value="">Chapter 2</option>
<option value="">Chapter 3</option>
<option value="">Chapter 4</option>
<option value="">Chapter 5</option>
<option value="">Chapter 6</option>
<option value="">Chapter 7</option>
<option value="">Chapter 8</option>
<option value="">Chapter 9</option>
<option value="">Chapter 10</option>
<option value="">Chapter 11</option>
<option value="">Chapter 12</option>
<button onclick="myFunction()" type="button">Load Selected Chapter</button><br></center>

function myFunction() {
var vid = document.getElementById("chapter").value;