How to make an animated poster with AI: from a still design to a motion poster that loops

An animated poster, or motion poster, is a poster that moves in one or two places and stays a poster everywhere else: the title holds, the layout holds, and the smoke drifts, the rain falls, the neon flickers, the figure turns its head. Film studios use them on digital billboards and in feeds because a still poster that breathes stops a scroll without asking anyone to watch a trailer. The format was expensive when every element had to be shot or composited; with image generation and image-to-video it is a still, one instruction and a loop, and this guide walks through the design, the motion, the typography rules that keep it readable, and the exports for a screen, a feed and a website.

What makes an animated poster work?

A motion poster keeps the poster's hierarchy intact and moves only the atmosphere: one or two layers animate, the title and credits stay perfectly still, and the loop is short enough to repeat without a visible seam.

The failure mode is the opposite of what beginners expect. Too little motion is fine; too much turns the poster into a video clip, and video clips do not read as posters. The title never moves. The subject moves subtly or not at all. The environment does the work.

Step 1: design the still

Generate the key art as a still in the AI image generator at the poster's ratio, usually 2:3 for print-style posters and 9:16 for phone screens and stories, at 20 credits per render. Describe the composition with the text area in mind ("a lone figure in fog, lower third empty and dark for the title"), and describe the element that will later move as part of the scene ("drifting fog", "rain on the street", "a neon sign"). Keep the type out of the generation entirely; typography is added afterwards so the title is exact, and generated text is the first thing a viewer spots as wrong. Styles and prompt patterns for poster-grade imagery are in the AI image prompt styles reference.

Step 2: animate one or two layers

Bring the still into image to video with one instruction that names the moving element and locks the rest: "fog drifts slowly across the lower half; the figure and the buildings are still; static camera". PrismPoster's Video Studio renders clips of 4, 6, 8, 10 seconds at 16:9 or 9:16, from 30 credits at 360p for a draft; render the keeper at 720p or 1080p. For a poster, a 9:16 generation is the practical choice, and a 2:3 print layout is then a crop of it. Two elements at most: environment (fog, rain, particles, light) plus one subject beat (a slow blink, a head turn, cloth in wind). The technique is the same as a cinemagraph, and how to make a cinemagraph with AI has the prompt structure that keeps everything else frozen.

Step 3: keep the type still

Place the title, credits and date on the timeline as text layers over the moving clip, never inside the generation. In the timeline editor, the clip is the background track and the typography sits above it, unmoving, in the area the still was designed to leave empty. If the motion drifts under the text, add a subtle dark gradient layer between the clip and the type so the title stays legible across every frame. A title that fades in once at the start of the loop is acceptable; a title that moves continuously is not a poster.

Step 4: make it loop

Posters play on repeat on a screen in a lobby or in a feed, so the join between the end and the start must be invisible. Place the clip and a reversed copy back to back (fog, cloth and particles look natural in reverse) or crossfade the clip's end into its start (rain, flicker and light sweeps, which look wrong reversed). The looping AI video guide has both methods with the timeline settings, and the same loop serves as a cinemagraph-style header on a website.

Step 5: export for each surface

• Digital screen or lobby display: 1080 x 1920 or 2160 x 3840 MP4, 30 fps, looping playback set on the player.
• Feed post or story: 1080 x 1350 (4:5) for a feed, 1080 x 1920 for a story, MP4 set to autoplay muted; the crop image for video preview shows what each crop removes from the poster frame.
• Website header: a short MP4 on loop, autoplay muted, plus the still as the fallback image.
• Messaging or a place that only takes images: a GIF from the free video to GIF tool at reduced width, accepting the 256-colour limit.
• Print: the still, exported at the print ratio and size; the motion version is the digital companion.

Animated posters for a film, a gig, a launch or a menu follow the same five steps; the difference is only the still. If the poster is for existing artwork rather than a new generation, animate AI art covers bringing a finished illustration into motion without changing its look.

What does an animated poster cost in credits?

Three still candidates at 20 credits each, two 360p motion drafts at 30 credits each, and one 720p keeper. Three stills and two drafts come to 120 credits before the final render, inside a free account's 150 starter credits; the one-off credit packs, from €3.99 with no subscription, are on /pricing.

Other ways to get from an idea to a finished video: How to animate a photo with AI, How to make an explainer video with AI, turning product photos into video, How to make AI videos, and How to make an AI video from text.

Frequently Asked Questions

What is an animated poster?

A poster in which one or two elements move, usually the atmosphere (fog, rain, light) or a single subject beat, while the layout and typography stay still. It is delivered as a short looping video.

How do you animate a poster with AI?

Generate the key art as a still, animate it with image-to-video using one instruction that names the moving element and locks the camera and the rest of the frame, add the type as a still layer on a timeline, and loop the clip by reversing it or crossfading its ends.

How long should an animated poster loop be?

A few seconds. Generated clips of 4, 6, 8, 10 seconds cover it; the loop is watched on repeat, so the invisibility of the join matters more than the length.

Should the title move on an animated poster?

No. The title, credits and date stay still so the piece reads as a poster. A single fade-in at the start of the loop is the most motion the type should have.