Diameter, diameter, diameter, alternator pulleys
Hit me up if you remember
Looking at the ones you posted and the one I posted there seems to be a different set of options.
I'm going to guess it has to do with the account or video specific sharing permissions.
If you click on the top right symbol of the video screen
here , then select the three vertical dots, there is an option to embed.
Either I did that, or I copied the URL and pasted it into the video option in the post editiing toolbar.