I’m creating a page that is pulling info from Vimeo using oEmbed. Everything works fine but the multiple calls to vimeo are causing page load issues (obviously).
I was wondering if it would be possible to make the same oEmbed call when the post is being created/saved, then populating various post meta variables with the information.
Yes, most definitely. Take this skeleton code below as a base for a function that would do what you want, and place it in your functions.php: