Ask a mod – how did this post die so quickly?

This post is [dead] within a few seconds of me posting it https://news.ycombinator.com/item?id=7307607

I don't understand, I think it's very interesting and relevant content to hacker news. If someone flagged it, could they please explain?

I also posted today to Ask HN about LaunchRock type services. It was killed almost immediately.

Youtube links are autokilled, I believe

I'm not sure if YouTube is autokilled, or it's marked as "easier to kill". There are a lot of off topic YouTube post.

I searched and I think that the submitted video is http://www.youtube.com/watch?v=n5LEEoskiaM . I think it's on topic and I hope the moderators revive the submission.

Yep, that's the video I submitted.

Well, at least now 1 person got to watch it

Perhaps you can try to submit the autotranslation.