Convert JSON to VTT
Whisper output, YouTube caption JSON, or a CapCut draft — out as clean WebVTT for the web player.
Convert your files
Drop files here
Drag & drop or browse · transcript JSON files
up to 2 files · 100 KB each
free to start · bigger jobs: one-time $7 pack, no subscription · pricing
Converting as a guest. A free account more than doubles your monthly conversions — and every editor you refer adds +5 to your account, stackable to +50.
How to convert JSON to VTT
Convert transcript JSON to VTT online. CutConvert reads Whisper and whisper.cpp output, YouTube caption JSON, and CapCut project drafts, and writes clean WebVTT — the caption format every web player understands — with timing preserved to the millisecond.
Add your JSON file
Drag in the transcript JSON — Whisper verbose output, whisper.cpp, YouTube json3, or a CapCut draft_content.json all work; the dialect is detected automatically.
Convert to VTT
Press Convert. Segments become WebVTT cues with their original timing.
Download your result
Download the converted file instantly — or a single ZIP archive when you convert a batch of files.
transcript JSON and WebVTT, explained
AI transcription hands you JSON; web players want WebVTT. This converter bridges the two for every JSON dialect the JSON to SRT converter reads — OpenAI Whisper (verbose_json), whisper.cpp, generic segment arrays, YouTube caption JSON, and CapCut/JianYing project drafts. Timing carries at millisecond precision, speaker labels are preserved where the source has them, and the output passes straight into HTML5 video, JW Player, Video.js, and every platform that takes a .vtt sidecar.
Whisper output, YouTube caption JSON, or a CapCut draft — out as clean WebVTT for the web player. It is free to start, encrypted in transit, and converts a whole batch into one ZIP — sign in when you need large, high-volume jobs.
JSON to VTT FAQ
Which JSON formats are supported?
OpenAI Whisper verbose_json, whisper.cpp output, generic {start, end, text} arrays, YouTube caption JSON (json3), and CapCut/JianYing draft_content.json files — detection is automatic.
Will the timing match my video?
Yes — the JSON's segment times carry into the VTT cues at millisecond precision, unchanged.
Can I get SRT instead?
Yes — the JSON to SRT converter is the same reader with an SRT writer. Use VTT for web players, SRT for editing software and most platforms.
Do speaker names come through?
Where the JSON carries speakers (Whisper diarization outputs, some transcript tools), they are preserved in the cue text.
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Why editors trust it
Free to start
Convert everyday batches for free. Create an account when you need large, high-volume jobs.
Batch in, one ZIP out
Drop up to 10 files at once and download a single tidy ZIP — or one file if that is all you need.
Made for editors
EDL, SRT, Avid caption TXT, and Premiere transcript JSON — with speakers, frame rates, and timecode handled the way post expects.
Secure by default
Files are encrypted in transit, converted on managed infrastructure, and never sold or shared.
Questions, answered
Where are my files processed?
Your files are uploaded over an encrypted (HTTPS) connection and converted on CutConvert’s servers, then handed straight back to you as a download. We never sell or share your media.
Is it free? Do I need an account?
Small, everyday batches are free to convert. For large or high-volume jobs you’ll create an account and upgrade — which keeps the free tier fast for everyone.
What do I get when I convert multiple files?
Drop several files and you get back one ZIP archive containing every converted file. Convert a single file and you simply get that one file — no unnecessary ZIP.
Which formats are supported?
You can convert EDL to CSV; SRT and VTT subtitles to each other and to plain text; SRT, TXT, and DOCX/DOC transcripts to Premiere Pro transcript JSON; SRT to Avid Media Composer caption TXT; and Premiere Pro .prtranscript exports to SRT, VTT, or text — with speaker labels preserved. More post-production formats are on the way.
Can I pick a frame rate?
Yes. For EDL and Avid caption output you can choose 23.976, 24, 25, 29.97, or 30 fps, or let CutConvert auto-detect it from your source.