Do they always ask for a demo video?

Hi everyone. I am looking for an ALT job here in Japan. Upon applying, I noticed that some companies ask for a demo video and others go for a zoom interview which makes it more legit to me. I just want to ask regarding those companies looking for a demo video, are they scammy any good (the offer is 200,000 yen)? Has anyone tried those?

*had to edit to explain my idea more and grammar

by DiscussionInner6508