AI video 5 min read
Best AI Video Editors for Changing Objects and Backgrounds
Runway Edit Studio is a candidate when you want to approve an edited keyframe before applying the change to video. Adobe Firefly is worth comparing when its prompt-based editing and selected-frame workflow fit the task. MyloStudio belongs on the shortlist for broader video reworking and creative revisions; when precise local preservation is decisive, evaluate it on the actual shot before treating it as a replacement for a specialized editing process.
This is MyloStudio's own product blog. The comparison uses official workflow documentation reviewed on October 17, 2026, alongside MyloStudio's confirmed capabilities. It does not claim that any candidate leaves every unedited pixel unchanged. The scenarios below are illustrative evaluation briefs.
Start with the size of the change#
A request to replace a plain wall behind a seated person differs from replacing a mug that repeatedly passes behind moving fingers. Both are local edits, but the second includes contact, changing visibility, and possibly reflections. The target's size alone does not determine the difficulty.
Define the editing boundary in three parts: the object or area to change, the action that should remain, and the nearby details that could reveal an unwanted change. For a wall, those details might be hair edges and chair legs. For a mug, they include the fingers, handle, lip, and liquid surface.
| Intended change | Appropriate evaluation | Reason to choose a different route |
|---|---|---|
| Replace a background while retaining the performance | Subject edges, floor contact, lighting relationship | The new environment requires a fundamentally different camera view |
| Change an object during handling | Grip, obstruction, shape, and reflections throughout the action | Exact product geometry cannot be maintained sufficiently for the intended use |
| Restyle the whole scene | Motion and overall temporal continuity | Most of the frame should remain visually identical |
| Rearrange existing shots | Timing and sequence in an editor | The content inside a shot needs to change |
This boundary prevents a whole-scene transformation tool from winning a comparison merely because it produces an attractive new image.
What the three candidates document#
| Candidate | Relevant route | Useful selection condition |
|---|---|---|
| Runway Edit Studio | Edited keyframe, optional image reference, application across video | You want to inspect the proposed appearance before generating the moving edit |
| Adobe Firefly | Text-prompt video editing with model-specific options; selected-frame editing in its documented Firefly Video 2 Preview route | You need to choose a particular editing route and develop its visual target |
| MyloStudio | Existing-video editing, transformation, variations, and source-image work | You want to explore and revise a creative change alongside the rest of the project |
Runway's current guide documents Single edit and the keyframe preview process. Adobe's help page describes different video-editing models and selected-frame image editing for its Firefly Video 2 Preview workflow. These details should not be generalized to every model available in either platform. Runway Edit Studio workflow, Firefly video editing routes
MyloStudio's confirmed video-editing capability supports considering the studio for revisions. It does not establish a particular masking brush, tracked selection interface, or lossless preservation method. Select it for the creative task you can evaluate, rather than for controls inferred from another product.
Background example: move a rehearsal into a conservatory#
Imagine footage of a violinist rehearsing in a plain room. The intended edit replaces the rear wall with a glass conservatory while retaining the violinist, bowing action, chair, and floor contact. This is a proposal for evaluation, not a recorded edit.
The background brief should define the new space in relation to the existing subject. The glass structure must appear behind the player. Its light should make sense with the illumination already visible on the face and instrument. A strong sunbeam from the wrong direction may require a broader relighting decision rather than a simple background replacement.
Inspect the bow as it crosses the new background. Thin moving objects can reveal a poor boundary even when the torso looks convincing. Also inspect gaps between the arm and body, the chair legs, and reflections on the violin. A successful opening frame is insufficient if those areas change during the performance.
In MyloStudio, describe the background change and the retained action separately. If the conservatory is too busy, simplify its structural lines before changing the performer. The purpose is to make the requested environment support the existing scene, not to redesign every part of the image.
Object example: replace a handled cup#
Now consider a person holding a plain cup while turning toward the camera. You want the cup to become a dark ceramic vessel with a broader handle. The handle's new shape must still accommodate the existing hand.
This is more demanding than changing a cup's color. During the turn, fingers can hide the handle, reveal it again, and change its apparent shape. The edited object must remain one connected form through those changes. A broad handle that intersects a finger is not acceptable merely because the new material looks attractive.
For a fair comparison, specify the target appearance and a realistic tolerance. If the vessel is fictional, some variation may be acceptable. If it is a real product that must be represented accurately, its geometry and markings become strict acceptance conditions. A result suitable for a creative scene may be unsuitable for a product demonstration.
Review the moment before obstruction, the period when the handle is partly hidden, and the moment it reappears. Then compare the person's face, sleeve, and tabletop. These non-target regions reveal whether the revision introduced changes that undermine the original shot.
Choose by review effort as well as the first result#
A useful workflow lets you identify where the edit fails and decide what to change next. The revised still may need a clearer object silhouette. The prompt may need a narrower target. The source action may be too complicated for the accuracy required.
Runway's documented keyframe preview offers one way to evaluate the proposed appearance before propagation. Firefly's model-specific routes offer another set of editing choices. MyloStudio is useful when a video revision is part of a larger process involving image development, alternative treatments, and assembly.
Do not count a renamed or rearranged failure as progress. If every attempt changes the hand, consider a different source pose or a conventional compositing approach that gives the required control. The selection criterion is whether the final shot meets the use case, including the surrounding details you need to keep.
For a more focused review method, read how to inspect a changed object and nearby details. If your task allows an iterative creative revision, bring the source video and one clearly bounded change to MyloStudio.