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These rules come from what the app really expects from your text and from the grid it uses to score the virality of a script. They apply to an idea, a script, a series or an episode.

1. The stakes in the first sentence

A vertical video is decided in its first three seconds. Your first sentence must contain stakes, not an introduction.
The strong version creates tension right away: we want to know who wrote that letter.

2. One subject

One idea, one promise, one payoff. If your text tells three things, the AI will make three ten second summaries. Keep the best one and turn the other two into other videos (or episodes of a series).

3. Concrete things you can see

The hook must work without sound: many people watch in silence. Prefer an object, a gesture, a precise number to an abstract idea.

4. Say who, where, and in what tone

The screenwriter invents whatever you leave out. If you have an idea of the character, the place or the tone, write it down, even in a few words: “a teenage girl who films everything”, “an empty gas station at night”, “deadpan tone”.

5. An ending that pulls people back

Every video ends with a reason to comment or rewatch: a question for the viewer, a choice to make, a twist that makes people want to see the beginning again. Write it into your idea if you already have it.

6. Each piece of information in its own field

The app has a field for each thing. Put in the wrong place, a piece of information is misread.
Never write subtitles or text to display in the style field. That field is added to every image prompt: the model would try to draw the text on every image.

How the app scores a script

During the story review, the “Virality” panel gives a score out of 100 before you pay for a single image. The analysis costs credits and is limited to a few analyses per day. Here are the criteria and their weight: Reading the score: 80 and above, strong potential; 70 to 79, fix the weak point and post; 55 to 69, postable but you are leaving views on the table; below that, rework it before posting. The analysis suggests its three most profitable fixes, which you can apply in one click (the rewrite costs credits).
Rules 1, 2 and 5 alone weigh nearly half of the score. If you only review one thing, review your first sentence.

Hooks that work

Change the type from one episode to the next in a series: the same hook twice in a row gets tiring.