AI Caption Generator
AI Caption Generator: Add Animated Captions to Videos Instantly
Add scroll-stopping animated captions to any video in seconds. FluxNote's AI generates word-level synchronized captions with 25+ styles — from karaoke highlighting to neon glow — all without manual timing or editing.
Last updated: February 23, 2026
How It Works
Create or import your video
Generate a video from text with FluxNote, or start with existing content in the editor.
AI transcribes with word-level timing
Whisper AI transcribes the audio and generates precise timestamps for every single word.
Pick a caption style
Choose from 25+ animated styles — karaoke, neon glow, box highlight, gradient, minimal, and more.
Customize and export
Adjust font, color, size, and position. Export with captions burned directly into the video.
Key Benefits
25+ animated caption styles
Karaoke word-by-word highlighting, neon glow, colored boxes, gradient text, and minimal clean styles — all trending on social media right now.
Word-level synchronization
AI generates timestamps for every word, enabling smooth animations that sync perfectly with speech. No manual timing required.
Increase views by 40%
Videos with captions get significantly more views and watch time. 85% of social media videos are watched without sound — captions keep those viewers engaged.
Full style control
Customize every aspect: font family, size, color, highlight color, position, animation speed, and effects. Match your brand perfectly.
Captions vs. subtitles: why animated captions win
Traditional subtitles are plain text at the bottom of the screen. Animated captions are styled, dynamic text overlays that actively engage viewers — the kind you see on every viral TikTok and YouTube Short.
The difference in performance is significant. Videos with animated captions see higher retention rates, more shares, and better algorithm performance compared to plain subtitles or no text at all.
FluxNote's caption generator creates the exact style of animated captions that top creators use — with AI handling all the timing and synchronization automatically.
Caption styles that perform on every platform
FluxNote offers 25+ caption styles designed for social media performance:
- Karaoke highlighting — Each word lights up as it's spoken, keeping viewers locked in
- Neon glow — Glowing text with vibrant color effects for eye-catching content
- Box highlight — Words appear in colored boxes that pop against any background
- Gradient text — Smooth color transitions for a premium, polished look
- Minimal clean — Simple, elegant text for professional and business content
- Bold impact — Large, bold text that dominates the screen for maximum readability
Each style is fully customizable — change colors, fonts, sizes, and positions to match your brand.
How AI caption generation works under the hood
FluxNote uses OpenAI Whisper for transcription, which provides industry-leading accuracy with word-level timestamps. The AI doesn't just know what was said — it knows exactly when each word starts and ends, down to the millisecond.
This precision enables smooth karaoke-style animations where words highlight in perfect sync with the audio. The result is indistinguishable from hand-crafted captions that would take hours to create manually.
You can also edit any word or timing in the built-in editor for complete control over the final result.