FineCut · AI product demo editor
Fine-cut your product demos in plain English
Upload a product demo, screen recording, or presentation and describe what you want changed. Cut dead air, smooth audio, re-voice mistakes, add overlays, and export a polished MP4 — without opening a timeline editor.
5M free for new users · No credit card required
AI product demo editor
Your product demo will appear here once you add finecut-product-demo.mp4 to public/videos/
Upload footage, describe edits in plain English, and get a polished product demo or screen recording — built for launch videos, onboarding, and sales follow-ups.
- Product demo editing
- Audio & narration fixes
- Infographics & overlays
- Clip rearranging
- Export-ready MP4
Sound familiar?
- Raw demo recordings pile up because polishing them means opening a timeline editor or waiting on a freelancer.
- Small fixes — cut pauses, replace a flubbed line, add a callout, reorder a section — still turn into a post-production project.
- Product updates move faster than polished launch assets, so walkthroughs, onboarding clips, and sales demos lag behind the actual product.
How it works
- 1
Upload your video
Drop in an MP4 or MOV — product demo, screen recording, presentation, training video, or walkthrough. Up to 15 minutes.
- 2
Describe the edits
Tell the assistant what to change in plain English: smooth audio, cut dead air, fix narration, add overlays, rearrange clips, or tighten the pacing.
- 3
Review the polished MP4
The assistant renders the edit, checks the output, and delivers a video ready for your landing page, pitch, onboarding flow, or sales follow-up.
Just describe the edit
Upload your video, paste or adapt a prompt like one of these, and the assistant handles cuts, audio, overlays, voice, and rendering.
- “Smooth out my audio — remove hiccups, mouth clicks, spits, and awkward pauses. Keep my delivery natural.”
- “Fix any wording mistakes in my narration. Rephrase flubs and filler without changing what I meant to say.”
- “Based on this doc, improve the information in the video accordingly — tighten the script and cut anything that doesn't match the source material.”
- “Add infographics that support the discussion, timed to the timeline with smooth fade-in and fade-out transitions.”
- “Cut all dead air and long pauses. Tighten pacing so this 12-minute walkthrough lands under 8 minutes.”
- “Add a lower-third title at the start and short chapter labels at each section break.”
- “Replace my voice on the sections where I stumbled — same voice, corrected script, natural pacing.”
- “Speed up the screen-recording parts 1.25× but keep the talking-head sections at normal speed.”
- “Insert a branded slide overlay at 1:30 while I explain the pricing chart on screen.”
- “Split this into three clips — hook, product demo, and call-to-action — and reorder them for a tighter pitch.”
- “Hold on the key dashboard frame at 2:45 for three seconds while the narration finishes, then continue.”
- “Generate a simple diagram for the workflow I'm describing at 4:10 and overlay it while I'm talking.”
What you get
- Natural-language editing — describe the change instead of dragging clips on a timeline
- Screen recording cleanup — cut dead air, pauses, retakes, filler, and awkward transitions
- Narration fixes — replace flubbed lines with corrected voiceover or TTS
- Infographic overlays — generate visual support from a doc, brief, deck, or prompt
- Product callouts — add labels, title cards, chapter markers, and visual emphasis
- Clip rearranging — split, reorder, shorten, or combine sections by instruction
- Pacing control — tighten a 12-minute walkthrough into a sharper demo
- Export-ready MP4 — uploaded footage in, polished product demo out
Frequently asked questions
How much does it cost to start?
New users get 5M platform tokens free — enough for several full edit passes on typical product demo edits. When those are used, upgrade to Pro or buy pay-as-you-go credits. See pricing for details.
What kinds of videos can I edit?
Product demos of any kind — software, hardware, pharma, consumer products — plus screen recordings, presentations, training videos, launch clips, and walkthroughs. If you have footage and want it polished, this is the right tool. We're not built for cinematic film editing, and that's by design.
What video length is supported?
Up to 15 minutes per source video at launch. Upload MP4 or MOV — product demos, screen recordings, presentations, training videos.
Do I need video editing experience?
No. Describe edits in plain English. The assistant handles cuts, overlays, audio cleanup, narration fixes, clip rearranging, and rendering.
Is this an AI video generator?
It's an AI video editor, not a video generator. Upload your footage, describe the edits, and get a polished MP4 back. FineCut can generate supporting visuals like infographics, overlays, and short B-roll clips when your video needs them, but the core job is editing what you already recorded.
Can it fix my audio and wording?
Yes. Ask it to remove pauses, hiccups, and mouth noise; mute or replace sections; and fix narration mistakes by re-voicing corrected script with a cloned or designed voice.
Can it add infographics from a document?
Yes. Upload your video plus reference material, then ask it to generate timed overlays or infographics that follow the timeline with smooth transitions.
How is this different from Kazi?
Kazi is the broader workspace for automating work across your apps. FineCut is a purpose-built Agent Kit focused on product demo and teaser video editing — polish footage by describing the changes in plain English.