Hello, Greetings! of the day. I have checked video functionality, on your website, at link, provided in project description. I have checked PHP code in attached files. To add video in iframe tag, from your website hosting, instead of youtube, the value of "src" attribute should be changed to video link, in iframe tag in file [login to view URL], as follows:
<iframe class="responsive-iframe" src="[login to view URL]" title="The reigning King of quad biking adventures in Port Stephens" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
The sample page, similar to your website page, using this functionality, can be checked at this link: [login to view URL] If get any issues in implementing this functionality, please tell.
I have much experience in working on projects, using PHP, HTML. Your work will be done, according to requirements.
Thanks.