An AI video is easier to direct as a sequence of short shots than as one paragraph describing a finished film. Start with a single visible action. Keep the first attempt small enough that you can identify what failed.

First project: one establishing shot, one subject action and one cutaway. Each clip has one job.

Turn the idea into shot cards

Shot What the viewer sees Motion Camera Pass condition
1 · Establish Orange lamp on a quiet desk Curtain moves slightly Slow push in Product shape stays stable
2 · Action Hand opens a notebook One clean page turn Locked frame Fingers and notebook remain plausible
3 · Detail Light falls across the page Dust moves in the beam Macro drift No false writing appears

This table is also your review sheet. If a clip contains three scene changes, split it before generating.

Write what moves

Describe the visible scene and the physical motion. Tool-specific guidance differs, but current Runway documentation explicitly recommends simple, direct prompts and changing one element at a time.

A warm ceramic desk lamp stands beside a closed notebook on a walnut desk.
The curtain moves gently in the background while the camera slowly pushes toward the lamp.
Quiet editorial product film, soft morning window light, stable object shape.

For image-to-video, let the reference frame define appearance and use the text mainly for subject, scene and camera motion. Only upload material you have the right to use.

Run a controlled comparison

Generate a baseline. For version B, change only camera motion. For version C, keep the camera fixed and change only environmental motion. Record the active model, aspect ratio and duration because supported settings vary by product and can change.

Check Pass Revise Reject
Continuity Subject keeps its shape Small correctable drift Identity or object changes
Motion One readable action Timing feels uneven Impossible or distracting movement
Camera Supports the shot Speed needs adjustment Conflicts with subject motion
Safety No unapproved person or mark Needs crop Rights or policy concern

Assemble outside the generator

Download only the clips that pass. Edit timing, sound, captions and transitions in a timeline where you can control them precisely. Keep the shot cards, prompts and rejected versions with the project; they explain why the final sequence looks the way it does.

Should an AI video prompt include every second?

Usually not for a first pass. One short shot with a clear subject action and camera instruction is easier to diagnose than multiple transformations and cuts in one generation.

Which tool should I start with?

Choose from current access, permitted references, required aspect ratio and the controls your shot needs. Do not select from an old feature comparison; video products change quickly.

How should I review the first result?

Watch once for the story and again for frame-level defects. Check subject identity, object continuity, camera movement, text, anatomy and whether the ending can cut into the next shot.