Features
Video Caption Generator Features
Everything OneDrop does between “drop in a clip” and “post it everywhere”, transcription, styling, editing and export. Your video never leaves your device; only compressed audio is processed, then deleted.
AI auto-transcription
Speech recognition returns word-level timing, so captions land exactly on the beat. Clear speech comes back remarkably accurate; every uncertain word is flagged for your review pass.
Voice detection that ignores the noise
A voice-activity model finds the parts of the audio that actually contain speech, leans on the voice over background music, and tells you when the music genuinely covers the words instead of inventing a guess.
27 caption styles, tuned for feeds
Karaoke word-highlight, pop-in, keyword boxes, minimal clean and more, every style is designed for vertical video and previews live as you pick. What you see in the editor is what your viewers see in the feed.
Full font, color and position control
Override text and highlight colors, move captions inside the platform safe zones, and keep a consistent look across every post. Your caption style becomes your brand signal.
Click-to-edit any word
Transcription is a draft; editing is where it becomes yours. Click any word to fix it inline, check the flagged ones first, and play the result with sound off before you export.
Export for every platform
Burn captions into an MP4 for TikTok, Reels and Shorts or export SRT, VTT and TXT for YouTube, LinkedIn, courses and players where viewers toggle captions. Same transcript, every format.
Processing your way
Free server transcription is the default: your video never leaves your device, only compressed audio is sent to the transcription provider and deleted right after. On capable devices (WebGPU, 8 GB+ memory) you can opt in to on-device processing, a fit for client work, unreleased drops and anything under NDA.
Saved locally, cleared any time
Projects, edits and style choices live in your browser's local storage so you can come back later. "Clear saved data" in the footer deletes everything in one step, there is no server copy.
Runs in the browser, nothing to install
No download, no account, no trial email. Open the studio and start captioning on any modern desktop browser; short videos caption fine on recent phones too.
Arriving with paid plans
The free studio stays as it is. Paid plans add room to work: longer videos, saved projects in the cloud, brand preset libraries and team features. They are in development, see pricing for what each tier will include, or try the studio right now, free.