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YOUTUBE
Vertical 9:16, under a minute, built for the Shorts shelf.
Most AI Shorts makers are repurposing tools: you feed them a long video and they cut clips out of it. This one generates a Short from scratch — from a script, or from an idea — which is a genuinely different thing.
That matters if you do not already have a back catalogue. A clipping tool needs an hour of existing footage before it can do anything. This needs a sentence.
Output is vertical 9:16, under a minute, with burned-in captions and a voiceover, built for the Shorts shelf rather than cropped down from something that was framed for a landscape player.
A clip pulled from a long video carries the long video's pacing. It has a run-up, because it was written to be watched by someone who had already chosen to be there. On the Shorts shelf, that run-up is the reason it gets scrolled.
A Short generated from scratch starts where a Short needs to start: at the point. The script is written to a sub-minute ceiling from the first word, so nothing has to be salvaged by trimming.
Shorts are consumed in a feed at speed. Nobody chose your video; they were shown it, and the only question is whether they keep going. Everything about the format follows from that.
So the opening is a promise, not an introduction. No channel name, no welcome back, no setup. If the first line could be deleted without losing anything, it is costing you the entire audience.
A large share of Shorts viewing starts muted. Captions are burned in by default for that reason — a Short whose idea only survives with sound on has lost half its viewers before the idea arrives.
They also help the watch-through numbers that decide whether the shelf keeps showing it, which is the metric everything else on Shorts depends on.
A Short, a Reel and a TikTok are the same aspect ratio and very nearly the same job, with different length ceilings and different conventions in the writing. The same script can be rendered for all three from one place.
That is usually the highest-leverage habit in short-form: write once, publish three times, and let each platform get something shaped for it rather than a re-uploaded file with another app's watermark on it.
Shorts reward volume in a way long-form does not. A single Short rarely changes anything; twenty of them tell the shelf what your channel is about and give it enough signal to start showing you to the right feed. That is a publishing problem, not a creative one, and it is the specific problem generating from scratch solves.
The practical rhythm most people land on is to batch: write several scripts in one sitting, render them together, and schedule out the week. Because renders run as background jobs, submitting five is not five times the waiting — it is one queue you walk away from.
What does not work is generating twenty near-identical Shorts on one theme. The shelf treats that the way you would expect, and it is the fastest way to teach it to stop showing your channel at all.
● QUESTIONS
Under a minute, and generation is capped to that automatically — the script's word count is derived from the platform's ceiling at normal speaking pace, so a generated Short can never come back too long to publish.
No. This generates from a script or an idea rather than clipping an existing upload, which is what makes it usable on day one of a channel.
Yes, burned into the video. A large share of Shorts viewing starts muted, so a Short without captions loses viewers before the idea lands.
Yes — that is the default. No camera and no on-screen presence at any point: the voiceover is synthesised and the footage is sourced or generated.
Yes. All three are 9:16 and the script carries across, with the length ceiling and the conventions adjusted per platform.
● OTHER FORMATS
Full-length 16:9, no time limit. Paste a whole script.
Vertical 9:16 with the longest runway of the three.
Vertical 9:16, native and fast — hook in the first beat.
Ideas, scripts, thumbnails, SEO and the rest of the pipeline