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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 conventions in the writing. The same short script, up to a minute, can be made once and published to all three.
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 visuals are animated 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
Long-form 16:9 up to ten minutes. Paste a whole script.
Vertical 9:16 for Reels — hook first, captions on.
Vertical 9:16, native and fast — hook in the first beat.
Ideas, scripts, thumbnails, SEO and the rest of the pipeline