This is apparently for Vimeo videos that have restricted access which requires a key to view them.
Example URL which XenForo does not recognize as valid for video embedding:
https://vimeo.com/626472445/016ba4ae7b
The end part ("016ba4ae7b") is the key needed to view the video. If you cut off the key from the end (and the leading slash), in order to make it an URL that XenForo recognizes as an embeddable video, Vimeo will indicate the video is not found since the access key is...
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Example URL which XenForo does not recognize as valid for video embedding:
https://vimeo.com/626472445/016ba4ae7b
The end part ("016ba4ae7b") is the key needed to view the video. If you cut off the key from the end (and the leading slash), in order to make it an URL that XenForo recognizes as an embeddable video, Vimeo will indicate the video is not found since the access key is...
Read more
Continue reading...