Inferred Property
The ‘og:image’ property should be explicitly provided, even if a value can be inferred from other tags.
This sounds like no Open Graph Meta Tags are displayed on your site at the moent.
If Yoast SEO is the only plugin “prohibiting” facebook to crawl the post to be able to play the included video, would it be sufficient to deactivate Open Graph Meta Data functionality in Yoast SEO?
I’m not sure if Yoast SEO adds Video Open Graph tags when you insert a video in one of your posts. You’d have to ask the plugin authors about this.
However, the errors above would not be displayed if Yoast SEO were outputting Open Graph Meta Tags. I can’t say fure sure without looking at your site, but it looks like neither Jetpack, nor Yoast SEO are adding Open Graph Meta tags to your site right now.
Does Publicize offer to not bypass its Open Graph functionality? So other plugins offering Open Graph functionality are being stopped?
Jetpack does the opposite; by default, Jetpack will add Open Graph functionality to your site. However, if another Open Graph plugin is active on your site, Jetpack will stopp adding its tags, and let the other plugin do the work.
Since no tags appear to be added to your site at the moment, it could be because you’re using another plugin that manages Open Graph meta tags, but you haven’t configured that plugin yet, so no tags are displayed by that plugin.
If you let me know your site URL, I’ll be happy to take a look.
If you want it to remain private, you can also contact us via this contact form:
https://jetpack.com/contact-support/