amp-facebook no longer working for videos

[MarkBCG]

Description

I'm not sure if this is more an AMP or a Facebook issue, but having redeveloped my website as AMP, I've found Facebook video post embeds are no longer working. The component renders correctly, but returns a 'Video unavailable' issue.

This was not happening a number of weeks ago when we implemented the embed, but is now we've come to launch the site into production.

We've tested various videos and various URL formats, all with the same results. The Facebook standard HTML embed equivalent is still working fine.

Reproduction Steps

Three examples here:

https://www.comedy.co.uk/online/videos/21854/covid-vaccine-side-effects/

<amp-facebook width="560" height="315" layout="responsive" data-embed-as="video" data-href="https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fwatch%2F%3Fv%3D1045102019304121&show_text=0&width=560"></amp-facebook>

https://www.comedy.co.uk/videos/21184/sian-harries-ac-esyllt-sears/

<amp-facebook width="560" height="315" layout="responsive" data-embed-as="video" data-href="https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fwatch%2F%3Fv%3D2725064657818842&show_text=0&width=560"></amp-facebook>

https://www.comedy.co.uk/online/videos/23279/the-vegan-tudor/

<amp-facebook width="600" height="600" layout="responsive" data-embed-as="video" data-href="https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fwatch%2F%3Fv%3D1095479007655123&show_text=0&width=600"></amp-facebook>

Relevant Logs

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Browser(s) Affected

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OS(s) Affected

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Device(s) Affected

No response

AMP Version Affected

No response

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