Still loads for me, here's a Nostr build link.

Primal, or some entity, likely deleted the video. Bitcoin fixes this.

That that works just fine. Would be interesting to know what happened with the other one though, if it failed transcoding, removed by a bug, or was it deleted by filter, etc?

I've noticed Primal hosted media doesn't always work if you're not using their client 👀

I don't know, it still works for me