Hey there, work for Vimeo’s tech support team. We’ve noticed an issue in the past month or so with Vimeo video posts to Twitter not displaying the clip’s thumbnail. You can view lots of examples here:
It looks like when trying to load the images they are returning a 404. However, when we try and validate a clip (e.g. https://vimeo.com/58511112) it definitely is finding the og:image.
Only differences I can see right now are that we’re using og:image instead of twitter:image, and the image URL is over HTTP.
Wondering if anyone has any ideas if either of those things could be the issue, or if there’s something else recently that’s changed? Thanks!