What makes a good AI video editing prompt?

It describes the finished result, anchors the request to moments the editor can find, sets the style, and says what must not change. Example: “Make a 60-second 9:16 clip for Reels starting at ‘here’s the catch,’ with karaoke captions, and keep the pricing disclaimer.”

Should I write one long prompt or several short ones?

Either works. One message is fastest when you know what you want, because the agent sequences the steps itself. Several rounds make each preview easier to judge. For long videos, settle the structure before the style.

Do I need editing vocabulary to write prompts?

No. Describe what you see, like “the captions cover my hands” or “the cuts feel rushed.” Preset names help when you know them, and the agent’s replies teach you the vocabulary as you go.

Can I refer to a sentence instead of a timestamp?

Yes. Valmera indexes a word-level transcript, so “start when I say ‘the real reason is’” lands on the exact word. A phrase also stays correct after earlier cuts, while a timestamp should say whether it comes from the original or the edited preview.

How do I fix an AI edit without starting over?

Write a revision that names the problem, where it is, the change and what to keep. The agent edits the current version, so everything you already approved stays. To step back a whole version, use Previous edit in Studio.

Can a prompt make the AI generate footage or music?

Not in Valmera. It edits footage you provide, mixes music you upload, link or name, and places real recorded sound effects found on the web. For brand-new footage, use a text-to-video generator and edit the result into your video.

Where can I find ready-made prompts?

The Valmera prompt library has more than 70 copy-paste prompts grouped by task, from cleanup and captions to screen recordings, privacy and export.

How to Write AI Video Editing Prompts

A good AI video editing prompt reads like a brief to a human editor. It names the finished result, points to exact moments in your footage, sets the style, and says what must not change. Write those four parts and an agentic editor like Valmera can carry out the whole edit from one message.

Below: the four-part formula, the anchors an editor can find, eight before-and-after brief rewrites, and the revision prompts that fix a preview in one sentence. For ready-made prompts, open the AI video editing prompt library.

The four-part prompt formula

1
Outcome: describe the finished video
Say what the result is and where it goes: “a 60-second 9:16 clip for Reels,” not “make it shorter.” A length or a platform gives the editor a finish line and gives you something to check.
2
Anchors: point at moments the editor can find
Refer to a phrase you said, a timestamp, a speaker or something visible on screen. Valmera indexes a word-level transcript with speaker labels, shot changes and frames, so “start when I say ‘here’s the catch’” lands on the exact word.
3
Treatment: name the style
List the captions, framing, music, look and pacing you want. Use preset names when you know them, like karaoke captions or the cinematic grade. When you don’t, describe the feel and ask the agent to tell you what it chose.
4
Guardrails: say what must not change
Protect what matters: “keep the pricing disclaimer,” “don’t cut the audience questions,” “leave the intro as it is.” Guardrails matter most in revisions, when you want one fix and nothing else.

Leave out any part the footage or the platform makes obvious. A one-line prompt is fine when the job is one line long.

Brief template

Make [deliverable] for [platform or audience], about [length]. Start at [phrase or time] and end at [phrase or time]. Keep [must-keep moments]; cut [what to remove]. Style: [captions, framing, music, look]. Don’t change [protected parts].

Anchors the editor can find

An anchor is anything that resolves to an exact spot in the footage. Vague references like “the boring part” force a guess; these don’t.

Spoken phraseStart when I say “most people miss this.”Interviews, podcasts and talking heads. A phrase still points to the right place after earlier cuts.

TimestampMute the original audio from 1:14 to 1:28.You know the exact range. Say whether it’s from the original recording or the edited preview.

SpeakerCut the host’s intro and open on the guest’s first answer.Recordings with more than one person. The transcript carries speaker labels.

Something visibleZoom in when the revenue chart appears.Demos, screen recordings and product shots.

Whole videoApply the warm grade to everything.Settings that should be global: grade, caption style, loudness.

PlatformMake it fit YouTube Shorts.Shape, caption size and loudness target in one word.

Before and after: eight brief rewrites

Each “before” is a reasonable thing to say to a person who watched the footage with you. An editor working from the footage alone needs the gap filled in.

BEFORE

Make this better.

AFTER

Turn this 12-minute talk into a 90-second vertical recap for Reels. Open on the line “most teams skip this step,” keep the three tips, add clean captions, and end on my call to action.

Why it works: It defines the deliverable, both ends and what stays, so you can check the result against it.

BEFORE

Fix the audio.

AFTER

Master the whole video to standard loudness, duck my uploaded track under my voice, and lower 12:00–12:45 by 3 dB where I leaned into the mic.

Why it works: It names three jobs the editor can do. Removing background noise isn’t one of them: Valmera has no audio denoise.

BEFORE

Add captions.

AFTER

Add karaoke captions at the bottom, three words at a time, white with a yellow highlight. Spell the product “Valmera” and the guest “Siobhan.”

Why it works: Style, density, position and tricky spellings in one pass save several rounds of fixes.

BEFORE

Make it vertical.

AFTER

Reframe to 9:16 for TikTok with my face in the crop. During the screen share from 2:10 to 3:30, use blurred padding so the whole screen stays visible.

Why it works: It sets the platform and the subject, plus an exception for content that can’t be cropped.

BEFORE

Add some b-roll.

AFTER

When I mention the warehouse, the delivery van and the checkout page, cover me with 3–4 seconds of matching stock footage. Keep my voice playing, and skip any moment where nothing fits.

Why it works: Each cutaway is tied to a mention, and the agent has permission to hold back.

BEFORE

Make it go viral.

AFTER

Open on my strongest claim with no intro, cut every pause, show the hook as on-screen text for the first three seconds, and keep it under 45 seconds.

Why it works: It swaps a hope for the mechanics you believe drive retention, and each one is checkable.

BEFORE

Make it look professional.

AFTER

Apply the cinematic look, use transitions only at scene changes, and fade in and out. Then tell me what you chose so I can adjust it.

Why it works: It names a look and hands over the remaining taste calls explicitly, asking for the vocabulary back.

BEFORE

Give me five clips.

AFTER

Find the complete stories in this interview, each with a setup, a point and a payoff, and turn each one into its own vertical short.

Why it works: It asks for complete stories instead of a quota. Each short becomes its own project to edit and export.

One message or several rounds?

Both work. In one message, the agent orders the dependent steps itself: cuts first, then captions timed to the new cut, then framing and the mix. In rounds, each preview is easier to judge because only one layer changed. For anything longer than a few minutes, go in this order: structure, cleanup, captions and framing, then b-roll, music and look.

ROUND 1 · STRUCTURE

Make one 45–60 second vertical clip from my answer about why customer interviews fail. Start on “the problem isn’t your questions” and end after the three-step fix.

ROUND 2 · POLISH

Cut pauses longer than 0.4 seconds and the ums, but keep a short beat before each step. Add karaoke captions and a chapter title reading “THE 3-STEP FIX” as step one begins.

ROUND 3 · SOUND AND FINISH

Put my uploaded track under it, low and ducked, master the loudness for phones, and fade out after the last sentence.

Paste Your Brief Into the Editor

Upload footage, describe the finished video, and review the preview. Creating an account and uploading are free; editing requires a subscription.

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Revision prompts: fix a preview in one sentence

A good revision names four things: the problem, where it is, the change, and what to keep. Skip “try again”; it throws away what you noticed.

Cuts feel rushed

Add back about a third of a second after each sentence between 1:10 and 2:00. Keep every other cut.

Slow opening

Start on the first sentence that states the result and cut everything before it.

Captions cover the product

Move the captions to the top while the product is on screen, then back to the bottom.

Misspelled name

Change “Shivon” to “Siobhan” everywhere in the captions.

Music fights the voice

Lower the music 4 dB and keep it ducked under my voice.

Too many zooms

Keep only the two strongest punch-ins and remove the rest.

Grade too heavy

Keep the cinematic grade but pull the contrast and warmth back a little.

Wrong part cut

Restore the section between “here’s the catch” and “so that’s why.” Keep all other cuts.

To step back a whole version, use Previous edit in Studio and continue from there. The timeline and transcript docs cover hand edits.

Prompting through Claude or ChatGPT

Over MCP, your assistant runs the edit with Valmera’s tools, so the same prompts work, with two differences. You can point at context already in the chat (“follow the brand notes above”), and you ask the assistant to export when you’re done: it runs export_final, waits for the job and returns the download link. One project can’t be edited from Studio and over MCP at the same time. Setup: Claude, ChatGPT.

Which AI video editors accept prompts?

The same sentence can drive very different products: an agent that edits a whole video, an assistant that operates a timeline, or a model that redraws a shot. Pick the kind of tool before polishing the wording.

Editor	What the prompt does	Best for	Checked
Valmera	An agent edits your uploaded footage from a brief, renders and checks a preview, and revises from follow-ups.	Finished edits of real footage	Oct 6, 2026
Descript Underlord	An agentic co-editor inside Descript’s text-based editor that reads scripts, watches video and takes revision requests.	Teams already editing in Descript	Oct 6, 2026
Kapwing Kai	Applies prompted edits you refine in chat; Kapwing recommends its Studio timeline for frame-accurate tweaks.	Quick first passes, then manual polish	Oct 6, 2026
Clideo AI Agent	Natural-language commands that change the visible timeline and stay undoable; Clideo recommends one task per message.	Single timeline operations	Aug 24, 2026
Adobe Firefly	Prompt-based edits that regenerate objects, backgrounds, lighting or style inside a clip using generative video models.	Changing the pixels within a shot	Aug 24, 2026

Each row links to the vendor’s own page, checked on the date shown.

What wording can’t change

A better prompt can’t add a missing feature. In Valmera there are no true crossfades, motion-tracked stickers, custom font uploads, audio denoise, AI music generation, text-to-video, SRT or VTT files, or direct publishing. The prompt library lists what to ask for instead.

Frequently Asked Questions

Made with Valmera: real exports

Describe the Finished Video

Valmera edits your footage, renders a preview and keeps revising the same project from your follow-ups. Creating an account and uploading are free; editing requires a subscription.