How to Change a Video Background with AI: Steps & Prompts

To change a video background with AI, attach the clip as a reference to a video model that accepts video input, describe the new setting in detail or attach a photo of it, and tell the model to keep the person, their movements, the camera, and the timing the same. The model regenerates the clip with the subject in the new location, with light and shadows that fit the scene. In getimg.ai, attach the video as a reference in Create video, write the background prompt, pick a model that supports video references, and generate a new version. It works on short clips, up to 15 seconds per video on most models and 30 seconds on Seedance 2.5, so it suits single shots, social clips, and ads rather than a full-length video in one pass.

Why Change a Video Background

The footage is right, but the place is wrong. That happens for many reasons:

• A cleaner set. A talking-head clip recorded in a cluttered home office, a dorm room, or a hotel corner looks more finished in a studio, a library, or a bright office.
• A product in context. A product demo filmed on a plain desk can sit on a cafe table, a bathroom shelf, or a forest floor, wherever it would actually be used.
• One shoot, several markets. The same presenter or product can appear in a different city or setting for each audience you publish to.
• Seasonal versions. A clip shot in summer can become a winter or holiday version without filming again.
• Testing a location. Try a scene in a few settings before you book a location or build a set.
• Privacy. Move a video out of your home so viewers don't see where you live.
• A distracting background. Passers-by, a messy shelf, or an ugly wall can be replaced with something calmer.

How an AI Background Change Works

A video-to-video model does not cut the subject out and paste them onto a new image. It reads the whole clip, works out which parts are the person and which parts are the room, and generates a new clip in which the same person, with the same movements and camera, is somewhere else. Because the scene is generated as a whole, the new background can come with lighting, shadows, reflections, and depth of field that fit the subject.

Two things follow from that. The output is a finished shot, not a cutout, so there is no transparent layer to export. And each generation works on one short clip, up to 15 seconds on most models and 30 seconds on Seedance 2.5. A longer video has to be split into segments that are generated one by one, and each segment can come out slightly different in background details and light, so the method fits short shots best.

How to Change a Video Background in getimg.ai

To change the background of a video in getimg.ai, you need a short clip and a description of the new setting.

1. Trim the clip to the shot you need. Each video can be up to 15 seconds long, or 30 seconds on Seedance 2.5.
2. Attach the clip as a video reference: click it in your gallery to open it in full view with the clip already attached, or upload it with the Reference button in the Create video prompt box.
3. Describe the new background in the prompt (see the next section for what to include), and add a keep list for the subject.
4. Optionally, attach an image of the location you want, such as a real store interior or a styled set photo, as an image reference.
5. Pick Seedance 2.5, MiniMax H3, MiniMax H3 Max, or Wan 3.0, set the aspect ratio to match the source, and generate a few variations.
6. Compare the results with the original, paying attention to the edges of the subject, their feet or the surface they sit on, and the light on their face.

What to Write in a Background Prompt

A background prompt works best when it describes a place, not a category. "Studio" leaves the model to guess. "A bright white photo studio with a white paper backdrop and soft light from the left" gives it a set to build.

Include four things:

• The location, with a few concrete details: materials, objects, scale.
• The light: direction, softness, color temperature, and time of day.
• Depth: what is close to the subject and what is far behind, which controls how blurred the background looks.
• The keep list: the person, their clothing, their movements, the camera, and the timing.

Two examples, each shown in the clips below:

• Edit the reference video: replace the cluttered home office behind the person with a bright, modern office with a white wall, a large window on the left letting in soft daylight, and a few plants, softly out of focus. Keep the person, their clothing, their gestures, the framing, and the timing the same.
• Edit the reference video: move the skincare bottle from the plain white desk to a sunlit marble bathroom shelf with a folded towel and a small plant behind it, softly out of focus, in warm morning light from the right. Keep the bottle, its label, the slow push-in, and the timing the same.

When you want to replace a video background with a specific location, an image reference does more than any amount of description. Add "Use the location in the reference image as the new background" to the prompt.

Match the Light, or the Swap Will Look Pasted

The most common reason a background change looks fake is a light mismatch. A person lit by a cool window on their left will look wrong on a stage lit by a warm spotlight from above, even if every edge is clean.

You have two ways to handle it. The first is to choose a new background whose light matches the original: if your subject is lit softly from the left by daylight, a daylight studio with soft light from the left will look natural. The second is to ask the model to relight the subject to match the new scene: "light the person with warm stage spotlights from above, to match the new setting." The second option changes more of the shot and can shift the subject slightly more, so check faces and skin tones closely.

Time of day is part of the same decision. Moving a daytime shot to a night setting is a weather-and-time edit as much as a background edit, so describe the new light on the subject too.

Which Shots Swap Backgrounds Cleanly

The furniture question catches many people out. If someone sits on a kitchen stool and you move them to a jazz club, the model needs to know what they are sitting on now. Say it: "the singer sits on a bar stool on the stage."

Common Problems and Fixes

The subject's clothing changes color

The light of the new setting is spilling onto the subject. Add the clothing to the keep list with its color, for example "keep the navy shirt the same."

Parts of the old background show through

A window, a doorway, or a shelf from the original room survives in the new scene. Name it in the prompt so the model replaces it too: "replace the whole room, including the window behind the person."

The subject looks like they are floating

The feet and the floor do not meet convincingly. Describe the floor of the new location ("a polished wooden stage floor") and add "keep the feet on the floor" to the keep list, or use a tighter shot that crops out the feet.

The background is too sharp or too blurred

Describe the depth you want: "the background is softly out of focus" or "deep focus, everything sharp."

The camera move changes

Name the move in the keep list in plain words: "keep the slow push-in toward the person."

Background Changes for Campaigns and Social

For marketing teams, the useful pattern is one shot, many settings, and it fits short formats best: social clips, ads, and product demos of a few seconds each. A product demo filmed once in an office can be placed in a studio for the website, a cafe for social, and a seasonal set for a holiday campaign, each as its own file next to the original. The same thinking applies to stills, where an AI background changer for images makes matching product photos for the same campaign.

The change video background workflow in getimg.ai keeps every version, so you can compare locations side by side before you commit to one. Edited clips can be used commercially, subject to our terms and applicable third-party rights; if the new background shows a real, recognizable location or brand, make sure you have the rights to use it.

The Bottom Line

Changing a video background with AI means describing a new place, or attaching a photo of it, and letting the model rebuild the scene around your subject. Light decides whether the result looks convincing, so pick a setting whose light matches the original or ask for the subject to be relit. The method suits short shots such as talking-head clips, product demos, and social videos; longer footage is changed shot by shot with the same prompt or reference photo.

Change a video background in Create video