CapCut AI
The editor that adds captions, removes backgrounds, and generates videos — in seconds, no editing skills needed.
By Thiago Lourenço Martins
A smart editing assistant for video creators
CapCut is a free video editor — think of it as an assistant that handles the tedious parts of editing. You upload a video and it does the heavy lifting: adds captions automatically, removes the background without a green screen, trims silences, and even generates a complete clip from a text description. It works on mobile and in the browser, with nothing to install and nothing to pay to get started.
Video without captions disappears unseen
Most of the Instagram, TikTok, and LinkedIn feed is consumed on mute — on the bus, in line, at work. Anyone posting without captions delivers content that 8 out of 10 people will never fully follow.
That is the share of users who watch social media videos without sound, according to data cited by CapCut and media consumption research. Captions are not an accessory — they are the video itself. And CapCut adds them in seconds, on the free plan.
Who uses it, how they use it, and what they save
Records a Reel at night, applies automatic Portuguese captions, and schedules for Instagram. No typing, no hiring an editor.
Records a lesson at home with a plain wall behind them. Removes the background and places a slide as the backdrop — no green screen, no studio.
Types a description of the product and the AI video generator assembles a clip with images, narration, and music. From text to video in minutes.
Recorded a 40-minute meeting or training. Smart Cut automatically removes pauses and silences, delivering the essentials in half the time.
Has a video in one language and needs to reach an audience in another. Auto dubbing with AI translates and syncs the audio without re-recording.
Automatic captions from scratch
- Go to capcut.com
Click "Log in" and sign in with your email or Google account. The free plan requires no credit card.
- Create a new project
On the dashboard, find the button that starts a new video project and import your file (phone, tablet, or computer).
accepted formats: MP4, MOV, and other common formats - Open the captions feature
In the left panel (web version) or bottom bar (mobile), find "Text" and then the automatic captions option — it may appear as "Auto captions" or "Captions".
- Choose the language and generate
Select your language from the list and confirm. Processing takes a few seconds for short videos.
the result appears as text tracks on the timeline - Review and style
Click any caption to fix misrecognized words. Use the font, color, and position options to match your style.
- Export
Click "Export" in the top right corner, choose the resolution (up to 1080p on the free plan), and download your file.
A ready-to-use prompt for the AI video generator
Create a 30-second video presenting [MY PRODUCT OR SERVICE] for an audience of [TARGET AUDIENCE]. Direct and confident tone. Highlight the main benefit in the first 5 seconds. End with a call to action asking viewers to follow the profile or get in touch.
Paste this into the text field of CapCut's AI video generator. The system assembles images, narration, and captions automatically.
Tips & real limitations
Do this
- Turn on captions even for short videos — retains viewers who watch on mute and increases watch time.
- Use background removal in good lighting, wearing clothes that contrast with the backdrop. The result improves significantly.
- Combine Smart Cut with auto captions to turn a long recording into ready-to-post short clips.
Watch out
- Auto captions on the free plan: up to 10 minutes of audio per file. Beyond that, the system stops or prompts an upgrade.
- Auto dubbing makes mistakes on proper names and accents — always review before publishing, especially in professional contexts.
- CapCut is owned by ByteDance (same company as TikTok). Do not upload videos with confidential information or sensitive data.
A tutorial to go further
* Independent suggestion, chosen for content quality. We have no relationship or sponsorship with the channel. (Video is in Portuguese.)
Test it with a video you already have
Grab any video recorded on your phone — even an imperfect one. Upload it to CapCut, apply automatic captions, and export.
You've succeeded if in under 5 minutes you have a video with synchronized captions, ready to publish — without typing a single line.
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