Subjects that loop well (and ones that don't)
The trick is choosing motion with no clear beginning or end. Continuous, cyclical or random motion hides the seam; a single event (a door opening, a person turning around) exposes it.
- Loop-friendly: rain, snow, flowing water, fire, candle flames, clouds, fog, drifting particles, swaying grass, ocean surface, rotating objects, abstract fluids, city lights blinking.
- Loop-hostile: people walking in and out, camera moves that travel somewhere, anything that grows, fills or breaks, sunrises and sunsets that change the light.
The camera matters as much as the subject: ask for a static camera or a very gentle sway. A dolly forward will always jump back when the clip restarts.
Loop prompts to start from
- Rain running down a window at night, blurred city lights behind the glass, static camera, cozy blue tones.
- A campfire burning steadily in a dark forest clearing, sparks drifting upward, static wide shot.
- Slow-drifting purple and teal nebula clouds with twinkling stars, no camera movement, deep space.
- Tall grass swaying gently in the wind on a hillside, soft golden light, static camera, calm.
- Colorful ink clouds slowly swirling in clear water, macro, black background, static camera.
- A lit candle on a wooden table, flame flickering softly, dark room, locked-off shot.
Add "steady, consistent motion throughout" to discourage the model from building to a dramatic moment halfway through.
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Create a video Closing the seam in an editor
Once you have a clip with steady motion, three ways to make it repeat smoothly:
- Crossfade: duplicate the clip on the timeline and overlap the end of one with the start of the next by about half a second to a second with a dissolve. Works well for fog, water, particles and fire.
- Forward-reverse (ping-pong): play the clip forward, then reversed. The seam disappears, but it only suits motion that looks natural backward: clouds, swaying plants, floating particles. Not rain or fire.
- Trim to a matching frame: scrub for a point near the end that looks close to the first frame and cut there. Great with slow rotations.
Export the looped segment several times over (say, 30-60 seconds) if the destination player doesn't loop automatically, like a stream scene or a video upload.
Model and format choices
Pro is usually worth it for loops: the clip will be seen dozens of times in a row, so flicker or smeared detail becomes very noticeable. Use Turbo (fast) to find the right subject and motion first. Request the longest length you can (8 s on free videos, up to 30 s on paid ones); longer source clips give you more room to trim to a clean seam.
- Website hero backgrounds, stream scenes, desktop wallpapers: 16:9.
- Phone wallpapers, Stories, TikTok ambient posts: 9:16.
- In-feed posts: 1:1 or 4:5.
For animating an existing illustration or photo into a loop, try image-to-video with "subtle motion" in the prompt. See image to video AI.
Cost of building a loop library
Say you want 10 ambient loops for a stream or a café screen rotation. Allow two fast drafts and one quality render per loop: 30 videos, or $30. If you already know the prompts work, it's closer to $12-15. A $20 top-up is a good starting library, and credits don't expire when you come back months later for a winter set. Loops appear in our public feed by default; Unpublish any you want exclusive.
Make the rain-window loop, or browse camera movement prompts to learn which moves loop and which don't.
Are the loops perfectly seamless straight out of the generator?
Not usually. You get a 3-30 second clip; choose steady motion and close the seam with a crossfade or forward-reverse edit.
How long can a loop be?
Each source clip can be up to 30 seconds (up to 8 s on free videos). Repeat it in an editor to export any length you need.
Which subjects loop best?
Rain, fire, water, clouds, fog, particles and other continuous motion with a static camera.
Can I use a loop as a website background?
Yes. Download the MP4 without a watermark, trim it into a loop and embed it on your site.
Which mode gives cleaner loops?
Pro mode usually has steadier detail, which matters when a clip repeats many times.