AutoCaption
AI caption generator that adds animated, styled subtitles to short videos and resizes them for each platform.
AutoCaption is an AI tool that transcribes a video and overlays styled, animated captions and emojis on it. AutoCaption is used by uploading a clip, choosing a caption style, adjusting fonts, colours and timing in a timeline editor, then exporting or publishing a version sized for TikTok, Instagram Reels, YouTube Shorts or LinkedIn.
Best for Creators and small teams who publish talking-head or short-form videos and want captions added and formatted for several platforms in one pass.
- Platforms
- Web, API
- Pricing model
- Freemium
- Free plan
- Yes
- API
- Yes
- Made by
- AutoCaption
- Added
Last verified: . Information taken from autocaption.io.
What is AutoCaption?
AutoCaption is a browser-based captioning tool aimed at short-form video. After a file is uploaded, speech is transcribed and placed on screen as word-by-word captions that can carry animation, emphasis and emojis. A timeline editor lets users correct words and shift timing, and a styling panel controls font, colour, size and position; a finished look can be stored as a reusable template. The service handles transcription and translation in over 100 languages and accepts MP4, MOV, AVI, MKV and WebM files up to 4K. One click reformats a captioned video to the aspect ratios used by TikTok, Reels, Shorts and LinkedIn, and direct publishing is offered alongside downloads. The site mentions a free tier, three paid plans, team collaboration and an API with public documentation.
Key Features
Automatic Captions
Transcribes the audio track and burns stylised subtitles into the video.
Animated Styles and Emojis
Applies motion, word emphasis and emojis to keep text visually active.
Subtitle and Timing Editor
Offers a timeline where each word and its timing can be corrected.
Auto-Resize
Converts one video to 9:16, 1:1 or 16:9 for different social networks.
Reusable Templates
Saves brand fonts and colours as caption presets for later videos.
Translation
Produces captions in other languages from the same source video.
How AutoCaption works
Upload a video
Drag in a file or select one from your device.
Customise the captions
Choose a style and tune fonts, colours, animation and timing.
Export or publish
Download the result or send it straight to a social platform.
Use Cases
- Captioning Reels and Shorts
- Add readable on-screen text to vertical clips before posting.
- Repurposing One Video
- Export the same clip in several aspect ratios for different channels.
- Multilingual Posting
- Translate captions to publish in more than one language.
- Brand-Consistent Subtitles
- Apply a saved template so every video uses the same look.
- Automated Pipelines
- Call the API to caption videos from another application.
Things to know
- Plans cap videos and duration
- Each paid plan sets a monthly number of videos, a maximum upload size and a maximum clip length, from 2 minutes on Starter to 6 on Pro.
- Higher resolutions need the top plan
- Starter lists Full HD export, while 2K and 4K appear on Pro.
- Separate AI Video pricing
- The pricing page has a second tab for AI Video in addition to the captions plans.
FAQs
What is AutoCaption?
AutoCaption is an AI caption generator that adds styled subtitles to videos and prepares them for social platforms.
Is AutoCaption free?
AutoCaption offers a free tier that can be started without a credit card. Paid plans add higher export quality, more templates and features such as team collaboration and API access.
What video formats does AutoCaption support?
AutoCaption accepts the common video formats, among them MOV, MP4, MKV, AVI and WebM, at resolutions up to 4K.
How many languages does AutoCaption support?
AutoCaption supports transcription and translation in more than 100 languages, among them English, Spanish, French, Arabic, Hindi and Japanese.
Does AutoCaption have an API?
Yes. AutoCaption links to API documentation from its main menu and lists API access among its paid features.
What plans does AutoCaption offer?
AutoCaption lists Starter, Expert and Pro plans with monthly or annual billing, plus custom enterprise arrangements. For current amounts, see the official pricing page.
How long does AutoCaption take to process a video?
AutoCaption says captioning usually finishes in less than 10 seconds for a typical clip, while long-form videos tend to need a few minutes.
Who it's for
- Content creators
- Social media managers
- Entrepreneurs
- Small businesses
- Marketing teams
Used in these workflows
- Short-form video from idea to posted clip: which AI tool does which jobStage 5: Captions and edit polish
Each guide lists the stages of one job and the tools that help at each stage. All guides
Comments
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Alternatives to AutoCaption
| Tool | Free plan | Starting price | API |
|---|---|---|---|
 VizardAI video clipping tool that finds highlights in long videos and turns them into captioned short clips for social media. |
Yes | — | Yes |
 ChoppityAI video editor that cuts podcasts and long videos into captioned short clips for TikTok, Reels and Shorts. |
Yes | — | Yes |
 KapwingBrowser-based video editor for teams with AI generation, automatic subtitles, dubbing and clip repurposing. |
Yes | — | — |
 KlapAI tool that cuts long videos into captioned vertical clips for TikTok, Reels and YouTube Shorts. |
— | — | Yes |
 OpusClipAI video clipping tool that cuts long videos into captioned short clips and posts them to social platforms. |
Yes | — | Yes |
Listed in the same categories as AutoCaption. A starting price appears only where we checked it on the maker’s pricing page; a dash means not checked or not published. All Transcription & Captions tools