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Free edit mode · @image mentions · up to 1,500 characters

Edit video with an AI prompt — type the change, keep the shot

No timeline, no masks, no keyframes. Say what should be different — the weather, a character, a prop, the place — and Genjutsu returns the same clip with that change, keeping everything your prompt didn't mention.

  • Any change in words
  • Point at references
  • The rest stays
  • No watermark

Updated by the

Made with Kenerate

Quick answer

Updated

How do you edit a video with an AI prompt?

To edit video with an AI prompt, upload a clip to Kenerate Genjutsu, choose Free edit and type the change — "make it a snowy winter night" or "replace the woman with the character from @image1". Prompts run up to 1,500 characters. Everything the prompt doesn't mention — people, motion, camera, timing — is told to stay as filmed.

Key facts

Mode
Free edit (prompt required)
Prompt
Up to 1,500 characters
References
@image1… up to 10, or 30 on Seedance 2.5
Kept
Everything not mentioned
Enhance prompt
Kenerate tiers
Not included
Cutting, trimming, captions

Real demo

One sentence: a snowy winter night

A greenhouse clip, one mood reference and one prompt. Snow on the glass roof and the plants, northern lights over the city — the camera move is the original's.

OriginalPrompted edit
  • Prompted edit. Prompt: “Make it a snowy winter night like @image1: snow falling, snow on the glass roof and the plants, northern lights over the city behind.”

Kenerate Genjutsu at 720p — an unedited result from the app's example gallery, shown next to its source clip.

Write an edit

Real demo

Two changes in one prompt

@image1 is a character, @image2 a neon alley. One sentence recasts the walker and moves the scene at the same time — same walk, same camera.

OriginalPrompted edit
  • Prompted edit. Prompt: “Replace the woman with the character from @image1 and move the scene into the neon alley from @image2 at night — same walk, same camera.”

Kenerate Genjutsu at 720p — an unedited result from the app's example gallery, shown next to its source clip.

Combine two edits

Real results

Clips that invite a rewrite

A holographic koi city, a watercolour cottage, a rainy window, ink in water and a mischievous cat — footage where one sentence could change the whole story.

Example clips made with image to video (model named on each card), not prompt edits. The two demos above are real Genjutsu Free edits of other clips.

How to

Edit a video with a prompt in five steps

Time needed
Steps
4 steps
  1. Step 1

    Upload the clip

    MP4, MOV, WebM or M4V up to about 100 MB; 2–15 s, or 4–30 s on Seedance 2.5.

  2. Step 2

    Choose Free edit

    The open mode: any change, in your own words. A prompt is required here.

  3. Step 3

    Add references if a look must match

    A character, a product, a place — each becomes @image1, @image2 in the order added.

  4. Step 4

    Write the change

    Verb + target + new look + what to keep: "Turn the sky stormy and purple, keep the people and the lighting on them."

Kenerate Genjutsu What should change options with Change outfit selected

Open Kenerate Genjutsu and choose Replace character, Swap object, Change outfit, Change background or Free edit.

1 / 5 · Pick what should change

Watch the tour · 1:19

Text, image & reference to video, models, edit, extend & chat

Chapters

Engines

Which engine reads your prompt

All three take the same prompt and references. Enhance prompt — which expands a short instruction — is on the two Kenerate tiers.

  • Kenerate Genjutsu title card — a film strip curving through a dark studio
    Default

    Kenerate

    Kenerate Genjutsu

    Input
    Clip 2–15 s + up to 10 references
    Output
    480p, 720p or 1080p · ~2–4 min

    Fast prompt edits on short clips, with Enhance prompt for one-line instructions

    Open Kenerate Genjutsu
  • Kenerate Genjutsu Pro title card — a cinematic widescreen frame split by a thin line of light

    Kenerate

    Kenerate Genjutsu Pro

    Input
    Clip 2–15 s + up to 10 references
    Output
    480p, 720p or 1080p · ~3–6 min

    Detailed prompts where texture and edges matter, also with Enhance prompt

    Open Kenerate Genjutsu Pro
  • Seedance 2.5 title card — a multi-shot cinematic triptych of a heist sequence in crisp 4K
    Up to 30 s

    ByteDance

    Seedance 2.5

    Input
    Clip 4–30 s + up to 30 references
    Output
    480p to 4K · ~4–8 min

    Long, precise prompts on clips up to 30 s, many references, 4K

    Open Seedance 2.5

Free edit needs a prompt — it's the only mode where the words are required. The four other modes start from a built-in instruction you can add to.

Tips

Prompts that change only what you meant

The engine keeps whatever you don't mention — so mention exactly what you want different.

  • Start with a verb: replace, turn, make, move, add.

  • Name the target precisely: "the man in the grey coat".

  • Say what to keep when it's at risk: "same faces".

  • One idea per sentence; two or three sentences at most.

  • Point at looks with @image1 instead of describing them.

  • Don't prompt real people into things they didn't do.

Example uses

How creators use Edit video with an AI Prompt

Illustrative examples of typical workflows, not customer reviews.

  • Video editor at a dual-monitor desk in a dim studio

    Video editor

    A freelance editor can deliver a client's 'what if it were night?' note without a reshoot or a VFX pass.

  • Social media manager reviewing vertical clips in a bright office

    Social media manager

    A social team can turn one product clip into seasonal versions by changing a single sentence.

  • Music video director directing on a sound stage with coloured lights

    Music video director

    A director can try a surreal idea on test footage before committing a day of shooting to it.

FAQ

Editing video with a prompt — questions

What is text-based video editing?

The phrase has two meanings. In transcript editors, it means cutting a video by deleting words from its transcript. In generative tools like Genjutsu, it means changing what's in the frame by describing the edit in text. Genjutsu does the second: it re-renders the clip with your change and keeps the motion, camera and timing — it doesn't cut or rearrange footage.

Link to this answer

What can a prompt change in my video?

Almost anything you can see: the character, an object, an outfit, the location, the weather, the season or time of day, or several of these at once. Free edit is the open mode for this; the other four modes — Replace character, Swap object, Change outfit and Change background — are presets for the common cases, with a built-in instruction behind each.

Link to this answer

How do @image mentions work?

Each reference image you add is numbered in order, so the first is @image1, the second @image2. Writing "the character from @image1" tells the engine which picture to copy. Mentions are converted into "reference image 1" before the engine reads them, and a mention past the end of your list is dropped instead of guessed.

Link to this answer

How long can my prompt be?

Up to 1,500 characters. Short, precise prompts usually work best: a verb, the target and the new look, plus what to keep if it's at risk. On Kenerate Genjutsu and Genjutsu Pro, the Enhance prompt toggle can expand a short instruction into a fuller one for you; Seedance 2.5 reads your words as written.

Link to this answer

Can a prompt trim, cut or caption my video?

No. Genjutsu changes what appears in the frame and returns the clip at its own length; it doesn't trim, cut, reorder or add captions. For captions, use the Add subtitles hand-off after the result. For assembling several clips, use a timeline editor and bring each finished clip into it.

Link to this answer

Why did the edit change more than I asked?

Usually because the target was ambiguous or the change implied more — "make it night" affects the light on everyone. Name the target precisely, add "keep the faces and the outfits the same" when they matter, and split big changes into two runs. Genjutsu Pro and Seedance 2.5 are the tiers built for cleaner, more faithful results.

Link to this answer

Is it OK to edit any video with a prompt?

Only footage you own or are licensed to use, and only with the consent of the people in it. Don't prompt real people into situations that never happened, don't impersonate anyone and never use celebrities. Label AI-edited clips when you share them, especially when they could be mistaken for real events.

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Two kinds of text-based video editing

Transcript editing treats the video as words: delete a sentence from the transcript and the matching footage is cut. Prompt editing treats the video as a scene: describe a change and the footage is re-rendered with it. They solve different problems — pacing versus content — and Genjutsu is only the second. It returns your clip at the same length, with the same cuts, changed inside the frame.

Explore

Every Kenerate video tool

Generators, tools, models and guides — all in one studio.

See more of Kenerate AI in your Google resultsAdd kenerateai.com as a preferred source — Google shows more from your preferred sources in Top Stories and AI answers.

By Last updated and reviewed

Sources: Kenerate Genjutsu (video editor)

Say it, see it, keep the rest

Free edit, up to 1,500 characters, references as @image1. Only on footage you have the right to edit.

Tried it? Tell us how it went