[SEO]

Video no longer available

If you want to know more about video no longer available -- one of the reasons is this (as I learned right now; it's about the YouTube):

This video is no longer available because the YouTube account associated with this video has been terminated.

Sorry about that.

^youtube.com

So, as you understood, the reason in this situation is that the account (YouTube account) associated with the no longer available video is terminated.