Wow these are actually really cool, man you can get some crazy results now without any real flying skill LOL . BTW when you upload through dtube it seems to be only allowing two tags right now (I assume this is a bug on dtube). If you want to use more tags (and I would definitely advise using more tags in general to help people find your content) just edit the post on any other Steem front end after you publish it. E.g. steempeak.com (you can add up to 10 tags there) or steemit.com (up to 5 tags).

@tipu curate