I have been using the "Basic" theme in conjunction with the "class-textobject" plugin to display videos that are hosted on Youtube. The text files and identically named jpeg thumbnail shots are put in a folder on my server and ZenPhoto has worked well creating an album of YouTube videos that will play embedded, where an image would normally display when clicking on the thumbnail.
I use the following code in a text file which references a YouTube video: <iframe width="560" height="315" src="https://www.youtube.com/embed/sNS-eQjn3WA?list=PLlcsMap1KHlX1ajPlhK8f_DH1ffxXdc-P" frameborder="0" allowfullscreen></iframe>
This has worked fine for a number of years, but now the videos do not play on mobile devices, Android or IOS. Works fine on a PC using Chrome or FF. On mobile I just get the spinning buffering symbol but the YouTube video does not load.
I recently upgraded to an HTTPS server and I am wondering if this introduced the problem. Any one with ideas about what would have broken this?