01~5 seconds
Drop your clip.
MP4, MOV, or WebM up to 1 GB, vertical or wide. The video stays on your device. Only the audio (~1 MB/min) is ever sent for transcription.
AI captions·Every platform·Free to start
Captions that keep people watching.
Most people watch on mute, so silent video gets scrolled past. Drop in any clip and get word-perfect captions, styled exactly how you want, in seconds. Burned in and post-ready for TikTok, Reels, Shorts, and YouTube. Your video never leaves your browser. Only the audio is sent to transcribe.
5 free min/month · no card
How it works
02~30 seconds
Make it yours.
AI transcription comes back with word-by-word timestamps. Fix the wording, then style it your way: 16 fonts, color, outline, and placement, with word- or pill-highlight on the active word. Resize or recolor any single word.
03≈ real-time
Post it anywhere.
Burn captions into a high-resolution MP4 that keeps your video’s original size, ready for TikTok, Reels, Shorts, or YouTube. Prefer subtitle files? Download clean .srt and .vtt for YouTube and any player.
What you get
Word-level timestamps
AI transcription with per-word timestamps, so the highlight tracks the speaker beat for beat. No manual syncing, no guesswork.
What you see is what you ship
One canvas renderer drives both the live preview and the export, so the file you download looks exactly like what you styled.
Style every word
Make captions truly yours: 16 fonts, size, color, outline, and on-screen position. Switch between word- and pill-highlight, and override the font, size, or color of any single word.
Built for every platform
Export a burned-in MP4 that keeps your video’s exact size, vertical for Reels and Shorts or wide for YouTube. Or grab clean .srt and .vtt subtitle files for YouTube and any player.
Private by default
Your video bytes never leave the browser. Only the extracted audio is sent for transcription, so your footage stays yours.
Fast, hardware-accelerated export
Re-encoding runs in your browser via WebCodecs and mediabunny. Audio is passed straight through, never re-encoded, so exports finish in about real time.
Pricing
Start free. Upgrade when you ship more.
5 free minutes every month, no card needed. When you outgrow it, Pro is just $5 a month for 100 minutes (about the price of one coffee), and Creator gives you 600. Pay yearly and 2 months are on us.
Pro
$50per year
Less than a coffee a month.
- Up to 100 minutes of audio every month
- Any clip length
- Full-length MP4, vertical or wide
- Ready for TikTok, Reels, Shorts & YouTube
- .srt and .vtt download
- Cancel anytime
Creator
$150per year
For posting every single day.
- Up to 600 minutes of audio every month
- Any clip length
- Full-length MP4, vertical or wide
- Ready for TikTok, Reels, Shorts & YouTube
- .srt and .vtt download
- Priority transcription
- Cancel anytime
FAQ
- How do I add captions to a video?
- Open ReelCaption in your browser, drop in your clip, and it auto-transcribes the speech into word-perfect captions in seconds. Tweak the wording, pick a style, then export a captioned MP4 or download .srt / .vtt subtitle files. No software to install.
- Can I add captions to my videos for free?
- Yes. The free tier includes 5 minutes of AI captions every month with no credit card required. Paid plans start at just $5 a month when you need more.
- Does ReelCaption work for TikTok, Instagram Reels, YouTube Shorts, and YouTube?
- Yes — every platform. The burned-in MP4 keeps your video’s original size, so it works for vertical clips (TikTok, Reels, Shorts) and wide YouTube videos alike. You can also export .srt and .vtt subtitle files for YouTube and any player.
- Are the captions generated by AI?
- Yes. ReelCaption uses an AI speech-recognition model to transcribe your audio with per-word timestamps, so the on-screen highlight tracks the speaker word by word. You stay in control and can edit any word before exporting.
- Is my video uploaded to a server?
- No. Your video is processed entirely in your browser and never leaves your device. Only the extracted audio is sent for transcription, and it is not stored after the captions are generated.
- How accurate are the AI captions?
- Automatic transcription is highly accurate, but it can miss uncommon words, heavy background noise, or overlapping speakers. ReelCaption gives you full editing controls so you can fix any word in a couple of clicks before you publish.
- Can I export SRT and VTT subtitle files?
- Yes. Alongside the burned-in MP4, you can download clean .srt and .vtt subtitle files to upload to YouTube or use in any video player or editor.
- How much does ReelCaption cost?
- ReelCaption is free for 5 minutes of audio a month. Pro is $5 a month for 100 minutes, and Creator is $15 a month for 600 minutes. Annual billing saves roughly two months, and you can cancel anytime.
Your next clip is one drop away.
Just $5 a month, about the price of one coffee, and you can cancel whenever you want. Open the studio, drop your video, and post a captioned MP4 in under a minute.