Well, it is visible from here, so I guess it works. You might use a link instead, saves download time, in case coming back to see it later makes sense to anyone.
I did just click the media button and inserted a link. I just see a link, do you see an embedded video window? or does one have to download and upload [here inside of a post] an actual video file before it shows an embedded video inside the post? Just wondering...
Oops. NEVER have I blundered like that before. You DID post a link, which of course worked when I poked it. Well. Jeez. Sorry 'bout that, but links are a personal preference since they don't interfere with other post downloads. I can't help with posting the vids directly. I don't think I've ever done it.