Do Embedded YouTube Videos Still Play Fine?

Do Embedded YouTube Videos Still Play Fine?

It seems that some of the YouTube videos that I had embedded in my Zoho Show slides that used to play fine in slide shows no longer do. All I get is what appears to be a rotating circle in the middle of each video region (see the attached image -- it has two embedded videos). My own videos -- those I created and uploaded to YouTube myself -- still play fine in slide shows. I do not know yet if all the other ones are affected or not.

So I have some questions about this:

1. Are you aware of this phenomenon? In other words, is it just me?
   
2. If so, do you know what is causing this?
   
3. Is there anything I can do to regain the embedded-playing capability?
   
4. If not, would you be able to fix the issue?
   

Videos are always helpful in grabbing the attendees' attention so I would really like to have this feature back.

Thanks!

Yasuro