Video sitemap returned zero results

[tiffany3]

The video sitemap is not returning any results for [ External links are visible to forum administrators only ]. Is it because they are hosted on a third party site and embedded?

[XML-Sitemaps Support]

Note that only videos from this sources can be detected by sitemap generator bot:
https://www.xml-sitemaps.com/video-sitemap.html
YouTube, Google Video, Vimeo, Dailymotion, MTV

(since they provide API that allow to get video details like play duration/thumbnail etc)