Actually, just read a bit deeper into the Required Minimum Functionality which has the section below:<br><h3>"Autoplay and scripted playbacks</h3><p>This section covers automatic playbacks. It applies to YouTube embedded players that either use the autoplay player parameter or programmatically initiate automatic playback using the YouTube IFrame Player API service, the YouTube Android Player API service, or another YouTube API service.</p>
Embedded players that automatically play a video should initiate playback immediately when the page loads or as soon as the embedded player is fully visible. However, an API Client must not initiate an automatic playback until the player is visible and more than half of the player is visible on the page or screen.
A page or screen must not have more than one YouTube player that automatically plays content simultaneously."
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So I guess this option is out too :( I had read the terms of service and developer policies but skipped this on thinking that as long as it played the video in their player that would be enough. But alas, I was mistaken.