New Twiddle

components.video-iframe.js

import Ember from 'ember';

const randInt = (min, max) => min + Math.round(Math.random() * (max - min));
export default Ember.Component.extend({
  src: 'https://www.example.com',
  
  didRender() {
    this.injectIframe();
  },
  
  injectIframe() {
    Ember.run.schedule('render', () => {
      const iframe = document.createElement('iframe');
      iframe.src = this.get('src');
      const container = this.element.querySelector('.iframe-container');
      container.innerHTML = '';
      container.appendChild(iframe);
    });
  },
  
  actions: {
    updateSrc() {
      this.set('src', `https://placekitten.com/${randInt(50, 100)}/${randInt(50,100)}`);
      this.injectIframe();
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{video-iframe}}
<br>
<br>

templates.components.video-iframe.hbs

<button {{action "updateSrc"}}>Change Src</button>
<div class="iframe-container"></div>

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}