How to Make an AI Horror Short Film, Step by Step

Short answer: Build the film on one rule, write your character once and reuse the description word for word, give the model a character sheet so the face never changes, animate stills by describing only the movement, then let sound — and silence — do the scaring. The Field was made this way entirely on one laptop: no actress, no farmhouse, no camera.

Watch the film first

The how-to

1. One rule for the story

Every time the lightning flashes, it’s closer. The figure in the field never moves once. Each appearance — far away, closer, in the room — is a single still picture on screen for a blink in a lightning flash. Your brain fills in the walk. One rule, no dialogue, one house and one woman: that’s what keeps a small film scary, because after the first flash the audience is just waiting for the next.

2. One character, every shot

Elena is written down once, precisely: green eyes, a dark braid over her left shoulder, a cream knitted cardigan, a tiny gold locket. That description goes into every shot she’s in, word for word.

• Make a character sheet — front, side, three-quarter, full body — with Z-Image Turbo in Promptus. Each picture takes seconds, so make lots and keep the best.
• AI doesn’t remember anybody; every picture starts from scratch. Ask six times for a woman with a dark braid and you get six women. So give the model the character sheet as a reference, and she comes back the same in the armchair, at the window and in the reflection.
• Check every keeper: same face, braid on the left.
• For the flash shots, make one picture of the empty window, then add the figure into that same picture — far away, then halfway. Any change to the room and the brain notices.

More on this: three ways to keep an AI character consistent.

3. Make it move — describe the motion only

Image to video ran in Promptus on the laptop’s own graphics card. Because the model can already see the picture, don’t describe it again — describe what moves. For one shot that was all: she lowers the book, her eyes find the window, the candle flickers. MiniMax H3 also made the sound in the same pass: the rain, the candle.

4. Spend your tries on the scare

The key shot: she walks to the window, presses her hand on the glass, lightning — the field is empty. You relax. Then her reflection, and behind her, in the room. That shot got the most attempts. Notice how little moves: a very slow push in, nothing else. In horror, stillness is often scarier than action.

5. Sound, and silence

Watch the ending muted and it’s just a woman and a candle. The score came from ACE-Step 1.5 running locally in Promptus, prompted for slow, dark orchestral horror: low tones, a detuned piano, rising strings, no vocals. Every flash gets a sharp hit. And the most frightening sound in the film is none at all: the candle goes out, silence, one breath.

6. The cut

• Each flash is only a few frames — long enough to see, too short to look properly.
• Keep the action in the middle of the frame and the same film crops straight to vertical for Shorts.

The recipe

Times were measured on an RTX 5090 Laptop GPU (24 GB). Elena and the figure are fictional. Try Promptus in your browser or download it for Windows or Mac.