Example results generated with Gluely
AI Auto Captions — Add Subtitles to Any Video
Automatically add captions to any video with AI-powered speech recognition. Whisper-powered transcription with word-level timestamps, style presets, and one-tap export.
76+
AI Styles
4.8
App Store
Free
To Start
Free on iOS · No account needed
About AI Auto Captions
Gluely's AI auto captions turn any video into captioned content in seconds. Powered by OpenAI Whisper, our speech recognition engine transcribes audio with word-level timestamps — so every word appears on screen at exactly the right moment.
80% of social media video is watched on mute. Captions aren't optional — they're essential for reach. Gluely makes it effortless: upload a video, let AI transcribe the speech, customize with style presets, adjust word grouping and position, then export. The entire workflow lives inside the app alongside AI video generation, so you can go from idea to captioned video without switching tools.
How It Works
Upload Your Video
Import any video from your camera roll or use an AI-generated clip from Gluely.
AI Transcribes Speech
OpenAI Whisper transcribes your audio with word-level timestamps for precise timing.
Customize Caption Style
Choose from style presets, adjust word grouping, font, color, and position on screen.
Export with Captions
One-tap export burns captions into your video — ready for TikTok, Reels, or Shorts.
AI Auto Captions Examples
Real results generated by Gluely users. Tap any style to try it.
Try AI Auto Captions Free
Photorealistic results in seconds. No watermarks. Free credits to start.
Download on App StoreFree on iOS · No account required to start
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Frequently Asked Questions
How does AI auto captioning work?
Gluely uses OpenAI Whisper to analyze your video's audio and convert speech to text with word-level timestamps. Each word is timed to appear on screen exactly when it's spoken, creating perfectly synced captions without any manual editing.
What languages do AI auto captions support?
Our Whisper-powered transcription supports 50+ languages including English, Spanish, French, German, Japanese, Korean, and many more. The AI automatically detects the spoken language.
Can I customize the caption style?
Yes! Gluely includes multiple style presets with options for font, color, size, position, and word grouping. Choose how many words appear at once and where they sit on screen to match your content style.
Are AI auto captions free?
Gluely is free to download on iOS with included credits. Caption your videos without paying upfront. Premium subscriptions start at $7.99/week for more credits and full access to all features.
What makes word-level timestamps better than sentence-level?
Word-level timestamps highlight each word individually as it's spoken — the same style used by top TikTok and Reels creators. Sentence-level captions show entire blocks of text at once, which is harder to read and less engaging for viewers.
Can I add captions to AI-generated videos?
Absolutely. Generate a video with Gluely's AI video tools, then add captions in the same app. The integrated workflow means you go from text prompt to captioned video without ever leaving Gluely.
Download Gluely Free
Photorealistic results in seconds. No watermarks. Free credits to start.
Download on App StoreFree on iOS · No account required to start
Published by Gluely · Updated March 2026