The link works fine for me on two different devices. I can't control the preview. I just posted the link.  

 https://image.nostr.build/9e4bdc969fb33396465ea818d0f309d43f2c6579bc1948f4bf5b419bd273ea43.png 

 I was replying to someone else 🙂 

 I don't know what to tell you. Maybe your client is the issue? It's just a standard YouTube link. Try it in a different client. 🤷‍♂️ 

 I have the same issue, if someone posts a video like this I have to go to amethyst to see it.  

 A fix for this is coming the next version. 

 This is fixed already. It will be available in the upcoming version 🙏