Win the first seconds
Short, readable caption lines make the hook understandable before a viewer decides whether to keep watching or swipe.
♪ TIKTOK · AI CAPTIONS
TikTok Subtitle Generator for AI Captions
Create TikTok subtitles automatically with AI. Generate captions, optimize line breaks and safe-area placement for vertical video, then export SRT or a burned-in MP4.
- ✓ Built for vertical 9:16 TikTok videos
- ✓ Caption placement that respects TikTok UI overlays
- ✓ Burned-in MP4 or subtitle-file export
Why TikTok captions need their own workflow
TikTok is a fast, mobile-first feed. Captions have to explain the hook immediately, survive sound-off viewing and stay clear of interface elements on the right and bottom of the screen.
Design for sound-off viewing
Speech, punchlines and calls to action remain understandable when the phone is muted or the viewer is in a noisy place.
Keep captions out of the UI
Place important text away from TikTok controls and lower metadata areas so captions remain readable after publishing.
How to generate subtitles for a TikTok video
Start with the original vertical file, generate timed captions with AI, tighten the text for fast pacing and export a TikTok-ready version.
1
Upload the original video
Use your original MP4 or MOV whenever possible. This gives the subtitle workflow the cleanest audio and avoids unnecessary recompression.
2
Generate timed captions with AI
Subvideo.ai transcribes the spoken audio and creates time-coded subtitle segments automatically.
3
Tighten lines for TikTok pacing
Review fast speech, slang, names and line breaks. Shorter caption chunks are easier to read while the video keeps moving.
4
Style inside the safe area
Choose readable fonts, contrast and placement while keeping key text away from TikTok buttons and lower-screen overlays.
5
Export and publish
Download SRT when you want a separate subtitle file, or export a burned-in MP4 when the caption design must look identical everywhere.
TikTok caption safe area and styling
There is no single permanent pixel-safe zone because TikTok can change its interface. The practical rule is to keep essential captions centered, high enough above the lower metadata area and away from the right-side action controls.
Keep the hook central
Put the most important words where they remain visible even when interface controls are present.
Use strong contrast
High-contrast text, a subtle background or outline helps captions survive bright and visually busy clips.
Prefer short caption chunks
Two compact lines are usually easier to scan than a dense paragraph during fast vertical playback.
Create captions for your next TikTok
Upload the original vertical video and let AI create the first timed subtitle draft. You can refine timing, wording and styling in the editor.
Make the caption part of the TikTok edit
Treat subtitles as part of the creative, not an afterthought. A clean hook, readable pacing and safe placement make the finished vertical video easier to follow.
Generate TikTok captionsTikTok subtitle generator – FAQ
Can I use burned-in captions on TikTok?
Yes. A burned-in MP4 keeps your font, color, timing and placement as part of the video itself.
Should I use TikTok auto captions or burned-in subtitles?
Native auto captions are useful when viewers need a selectable caption track. Burned-in captions are better when you want complete control over visual style and placement.
Does this work with 9:16 vertical video?
Yes. The workflow is designed for vertical video and lets you review caption placement before export.
Can I translate TikTok captions?
Yes. After transcription you can translate the subtitles and export a localized subtitle file or a new burned-in video.