What file formats does the AI caption generator support?

Most common audio and video formats are supported, including MP3, MP4, MOV, WAV, and WEBM, ensuring flexible uploads.

Is this a free AI caption generator?

A free online entry option is available, with clear file size and duration limits shown before caption generation.

Yes, captions can be translated during generation, and bilingual subtitles can be displayed or exported as needed.

All captions are fully editable, allowing text changes, timing adjustments, and visual styling before export.

Long recordings are supported, including multi-hour videos, depending on file size and usage limits.

Subtitle-only export options let you download caption files without re-encoding the original video.

Create accurate captions from any video or audio in minutes with RecCloud.

Drag and Drop files to upload or

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mp3/mp4/mov/webm/wav... (and 4+ more)|Video ≤ 4G, Audio ≤ 500M|Max 5h

From upload to finished captions in minutes, with no installation and no learning curve.

1
Upload Your Media
Upload video or audio files directly in your browser by drag and drop, browsing your device, or selecting files from saved projects.
2
Generate AI Captions
Click Generate Now to automatically detect speech and generate captions with accurate timing across the entire file.
3
Edit and Export
Edit text, adjust timing and styles, add translations if needed, then export subtitle files or a captioned video instantly.

A smarter way to generate captions online without sacrificing accuracy, control, or flexibility.

100% Browser-Based Convenience
Everything works directly in your browser, allowing you to generate captions without downloads while supporting large files and long recordings.
Accurate Speech-to-Text Conversion
Advanced speech recognition converts spoken audio into readable captions with reliable timing, even for long videos and varied accents.
Powerful Editing & Styling Control
Edit captions line by line, apply preset styles, customize fonts and backgrounds, and preview changes instantly on the video.
Built-In Translation & Bilingual Support
Generate captions in one language or add translated subtitles to reach global audiences without reprocessing the original media.

Designed to fit content creation, education, marketing, and business workflows.

Content Creators
Add captions to social videos and online content to boost engagement, accessibility, and watch time.
Online Education
Create clear subtitles for lectures, tutorials, and recorded courses to help learners follow along more easily.
Marketing Videos
Produce branded captions that keep messaging clear while matching your visual identity.
Corporate Training
Generate accurate subtitles for internal training videos, meetings, and onboarding materials.
Language Learning
Use bilingual captions to support listening comprehension and vocabulary development.
Media Localization
Translate and export subtitles efficiently for international distribution and localized audiences.

This tool fits perfectly into our production process and significantly speeds up content delivery.

Michael TurnerMarketing Manager

Captions used to take hours, but now I can generate, edit, and export everything online with clean results.

Emily ChenVideo Creator

The workflow is simple but powerful, especially for long lectures where timing accuracy really matters.

Daniel BrooksOnline Educator

Bilingual captions are incredibly easy to set up, which saves me a lot of repetitive editing work.

Sofia MartinezLanguage Coach

This tool fits perfectly into our production process and significantly speeds up content delivery.

Michael TurnerMarketing Manager

Captions used to take hours, but now I can generate, edit, and export everything online with clean results.

Emily ChenVideo Creator

Captions used to take hours, but now I can generate, edit, and export everything online with clean results.
Emily ChenVideo Creator
The workflow is simple but powerful, especially for long lectures where timing accuracy really matters.
Daniel BrooksOnline Educator
Bilingual captions are incredibly easy to set up, which saves me a lot of repetitive editing work.
Sofia MartinezLanguage Coach
This tool fits perfectly into our production process and significantly speeds up content delivery.
Michael TurnerMarketing Manager

Answers to common questions before you start generating captions.

What file formats does the AI caption generator support?
Most common audio and video formats are supported, including MP3, MP4, MOV, WAV, and WEBM, ensuring flexible uploads.
Is this a free AI caption generator?
A free online entry option is available, with clear file size and duration limits shown before caption generation.
Can I translate captions into other languages?
Yes, captions can be translated during generation, and bilingual subtitles can be displayed or exported as needed.
Can I edit captions after they are generated?
All captions are fully editable, allowing text changes, timing adjustments, and visual styling before export.
Does it support long videos or recordings?
Long recordings are supported, including multi-hour videos, depending on file size and usage limits.
Can I export subtitles without changing the video?
Subtitle-only export options let you download caption files without re-encoding the original video.