So is this true for most/all videos from that channel? Do you know if the wiki used to be able to upload videos from the channel?

Its more of a recent issue. This was never a problem before, Maybe in the past week.

Have you asked the local admins about this? Perhaps the wiki added a new abuse filter or something. The only other options I can think of are 1) Disney has somehow disallowed embedding of their videos, 2) there is some new global filter preventing it, or 3) it is just some bug. It is kind of hard to tell without more details about the error.

Can you give a Youtube link to a problem video? It would be good to know if this is a problem on all wikis or just the ones you tried.

Im an admin myself, so Im not too sure what specifically the problem is. I know another admin said he tried uploading the videos onto another wiki and they worked successfully, so this problem is just limited to the Disney wiki.

I sent a request form. Thanks

That is interesting. A problem with a specific YouTube channel on a specific wiki. Well, I wish you the best of luck in resolving the issue; whatever it is.

I noticed the Disney wiki is using the Abuse Filter... I wonder if there is a filter gone wrong.

If it is, it would probably be filter 8 since that is the only one that has been updated in months.