Auto-captions that actually look good.
Most viewers scroll with the sound off. StoryLuma generates clean, readable captions and burns them right into the MP4.
25 free credits on signup · no subscription
How it works
Bring your video
Upload your clip or pick one from your StoryLuma library.
Pick a caption style
Choose a template that fits your brand and platform.
Render & download
Get an MP4 with captions baked in. Post anywhere.
What you get
Feature highlights
Built for silent scrolling
High-contrast captions sized for TikTok, Reels, and Shorts.
Per-platform safe areas
Caption position respects platform UI so nothing gets covered.
Bundle with voiceover
Pair captions with an AI voiceover for max retention.
FAQ
Are captions burnt into the video?+
Yes. The final MP4 ships with visible, styled captions — no separate .srt file required.
What languages are supported?+
English performs best today. Additional languages are rolling out as the underlying models improve.
Can I edit captions before rendering?+
Caption styling (font weight, position, color) is templated. Text comes from the voiceover or transcription pipeline.
Will captions sync to my voiceover?+
Yes. When you add an AI voiceover, captions are word-timed to match.