Blockchain stores all, but each front end is geared to show what it is designed to show. With a maximum of 10 tags per post, the 1st tag is the community tag, the next 4 or 5 are for the topic while the rest can be for other front-ends (and the tokens they offer).
D.Buzz was the first microblogging platform designed for Hive blockchain. LeoThreads was the second, and it went online last summer; since then it's taken off in activity. A few weeks ago Ecency.Wave became Hive's 3rd microblogging platform. All are separate, so all will present whatever is tagged for them.
When it comes to video content, I'm the wrong person to give suggestions. Thankfully, enough people post videos they they can suggest options for whatever kind of video you want to post.
Posted via D.BuzzHugely helpful!!!! I do upload vids to @threespeak and i have my peakD and ecency accounts. I lack understanding on all the tokens and how to earn. i see in Ecency you can buy. THANK YOU. it's an adventure haha