Video on Demand and Live Streaming are two different things.
YouTube premiers are just video on demand on a schedule with a chat room.
HiveStreams.Live Streaming is like Twitch.TV, but 3SPeak is like YouTube.
If you wanted to "premiere" a pre-recorded video, you would need to live stream that video at a specific time from your computer to a live streaming service. Using OBS or StreamYard or whatever RTMP streaming app you prefer. (Real Time Media Protocol) OR use a Video On Demand service like Youtube that just plays the recording at a set time from their own stored copy.
YouTube stores videos and plays them back. They also allow live streaming and because billionaire companies and sponsors buy your personal data from them and cram ads on it, they can afford massive and insanely expensive data farms (tens of millions of dollars per month in costs) or like 3peak, use IPFS type protocols to store it all later, and IPFS definitely still costs money, which in 3speaks case is taken through beneficiary fees and other means in which they earn to pay for that storage. The thing is, live streams rarely get replays a day after they aired, especially over time. Live events are live. That's when they are relevant. Later on, not so much. Unless its literally world news, or a huge celebrity is on it like the recent streams of celeb youtubers interviewing ex presidents. People might scroll through that video later over a couple days, but by next week, its ancient history.
Conversely live streaming is sending video in real time, live, from your location. Literally talking to your audience, in real-time not prerecorded.
So anyway, you "could" send a prerecorded video instead of a live camera over a live stream, but that's just a watch party, not so much a "live stream".
It's possible, but its only real benefit is a video with a chat room at a certain time, as opposed to just uploading it to a VoD site and letting people watch it whenever they want and comment on it as they pass by it.
HiveStreams.Live does not store video. Streamers can send their livestreams to multiple outlets, such as broadcasting simultaneously to HiveStreams, YouTube Live, Twitch.tv, their own embedded website players on their own personal websites, and so on. Any RTMP based live streaming site, all of them work on the same video protocol, RTMP. Some of those will also save it for you, potentially branding it, putting ads on or it or just flat out charging for the post stream recording storage.
HiveStreams does not save the live event streams for broadcasters. Creators can record them locally on their cameras, or computers if using a webcam, or on media drives if its a bigger multicam production, etc, during the live event, and then edit the results for brevity, as most live streams are full of greetings and other stuff that replay watchers wont care about, and then publish them on video on demand sites such as 3speak, youtube, facebook, vimeo, or wherever as an additional way to publish them after the live stream is over.
If you wanted to "premiere" a video on HiveStreams, you would just actually be live streaming a recording from your computer in real time using a studio app like OBS. It would work, but there will be no stored replay of it on HiveStreams, you would still need to upload it somewhere else to a video on demand site that is storing video and serving recordings, instead of a live streaming app where you are serving the video yourself. and the site is merely hosting your feed and making things like web based players and chat rooms and channel profiles and things available for your live channel.
It's like a TV, tvs, don't save your stuff, but you can use a 3rd party - a VCR to save those live streams if you want. And on tv you can see live feeds like on the news or recordings like that old sitcom rerun, but the tv itself is just the conduit. HiveStreams is the TV here.
Oh, perfect, you took your time to explain in detail and I understand it now. I sincerely appreciate this @sircork. I'm looking forward to trying out the Hivestreams.