TOOL · CAPTION MAKER · UPDATED AUG 20
Captions that don't look stock.
Call it a caption maker, a caption creator, or an auto-subtitle generator — getvivix auto-captions any video using OpenAI Whisper, then exports a vertical clip with burned-in captions in 23 viral templates. 95%+ accurate on clean English audio, 90+ languages, browser-only.
23 BUILT-IN TEMPLATES
EVERY TEMPLATE EDITABLE · FONT · COLOR · WEIGHT · POSITION · ANIMATION · OUTLINE
HOW IT WORKS
MP4, MOV, WebM, or AVI. Length and file-size caps scale with your plan (10-25 minutes, 100-500 MB). Stays in your private workspace — uploads auto-delete after 2 hours if you don't download your export.
Whisper transcribes the full timeline. For long content, Smart Clip suggests the strongest segment to trim automatically instead of scrubbing by hand.
23 caption styles, all customizable. Reframe to 9:16, 1:1, 16:9, or 4:3. Export ready to post — no extra credit charge for exporting.
What people build
- Turn podcasts into TikTok-ready clips with captions
- Add captions to talking-head videos for accessibility
- Repurpose YouTube videos into Reels and Shorts
- Caption webinars and interviews for higher retention
- Subtitle behind-the-scenes content for IG Stories
- Localize videos by editing transcripts before export
FREQUENTLY ASKED
How accurate are the captions?+−
Captions are generated by Whisper, OpenAI's speech-to-text model. Word-level accuracy is 95%+ on clean English audio. Heavy accents, music overlay, and background noise drop accuracy slightly. You can edit any caption inline before exporting.
Does it work in my browser?+−
Yes. Caption Studio runs in your browser using the Canvas and MediaRecorder APIs to burn in captions and export — no plugin, no separate app to install. Your video is uploaded to your private getvivix workspace so Whisper can transcribe it, then you style and export the result directly from the browser.
How does the smart clip picking work?+−
Smart Clip reads your transcript and suggests up to 3 ranked trim windows for the clip you're currently editing — scored on hook strength, pacing, and where the moment naturally opens and closes. Cycling through those 3 candidates for free; asking it to re-analyze and generate a fresh set costs another clip credit, the same 1 credit charged for the original transcription.
Can I customize caption styles?+−
Yes. 23 templates ship out of the box (MrBeast, Karaoke, Neon Glow, Retro VHS, Holographic, and more). Each is fully editable — change the font, color, weight, position, animation, and outline.
What aspect ratios are supported?+−
Source video can be any aspect ratio. Caption Studio exports to 9:16 (TikTok / Reels / Shorts), 1:1 (Instagram feed), 16:9 (YouTube / web), and 4:3 (classic/traditional), or you can keep the original framing.
Is it free?+−
Yes. Free signup includes 1 clip credit — enough for one full transcription; re-exporting that same clip afterward, in any template or aspect ratio, is free — plus 3 normal credits. Paid plans include clip credits per month: Standard 80, Pro 120, Pro Plus 240, Ultimate 400. Each clip credit pays for one AI transcription pass, not the export.
Is this AI caption generator really free, or is it a trial?+−
It's a real free tier, not a 7-day trial that locks you out. Signup gives you 1 clip credit for a full transcription — exporting the result, in any of the 23 templates, doesn't cost anything extra — plus 3 normal credits. No card needed to start. The exact credit cost is shown before you transcribe, so you always know what a clip will spend before you click.
Can I auto caption a video for free with no watermark?+−
Yes. Exports from Caption Studio carry no getvivix watermark on any tier, including the free clip credit. You upload a video, Whisper transcribes it, you pick one of 23 templates, and the vertical clip you export is clean. Commercial use of what you make is covered on any paid plan.
How do I add subtitles to a video with AI?+−
Upload your file (MP4, MOV, WebM, or AVI), and getvivix runs OpenAI Whisper to transcribe it into time-synced subtitles automatically. Edit any line inline, choose a caption style, then export burned-in subtitles to 9:16, 1:1, 16:9, or 4:3. The whole thing runs in your browser, no plugin or download.
Do I have to caption videos one tool at a time?+−
No. Caption Studio is one tool inside getvivix, which hosts 100+ image, video, and audio models under a single subscription. You can caption a clip, then generate a thumbnail, voiceover, or B-roll without juggling separate apps or logins, and every action shows its credit cost up front.