Convert JSON to SRT subtitles
Turn timed transcripts or YouTube chat replay JSON/JSONL into SRT. Preview the detected captions, or map text and timestamp fields in a custom JSON export.
Convert your files
Drop files here
Drag & drop or browse · Whisper or transcript JSONConverted in your browser. Files never leave your device.About an hour of footage is free. Larger files: $3 each, or Pro $9/month for everything up to 50 MB.
up to 2 files · 2 MB each
free to start · project to project: $5 · every other conversion: $3 · Pro $9/month · pricing
Converting as a guest. A free account has no monthly cap on files within the free size limit.
Comment convertir JSON en SRT
Convertissez du JSON en SRT en ligne. CutConvert lit les transcriptions Whisper — verbose_json d’OpenAI, sortie whisper.cpp — et le JSON générique à segments synchronisés, et écrit des sous-titres SRT propres et numérotés, intervenants préservés.
Ajoutez vos fichiers JSON
Glissez vos fichiers .json Whisper ou de transcription dans la zone de dépôt, ou cliquez pour parcourir.
Convertissez JSON en SRT
Cliquez sur Convertir. Chaque segment synchronisé devient un sous-titre SRT avec un timing en millisecondes ; les champs speaker deviennent des noms d’intervenants.
Téléchargez votre résultat
Téléchargez le fichier converti instantanément — ou une seule archive ZIP lorsque vous convertissez un lot de fichiers.
JSON de transcription et Sous-titres SRT, expliqués
La transcription par IA produit du JSON ; les lecteurs et logiciels de montage veulent du SRT. Ce convertisseur accepte les formes qui existent réellement sur le terrain : verbose_json d’OpenAI Whisper (segments avec start/end en secondes), whisper.cpp (tableaux transcription avec offsets en millisecondes) et les tableaux génériques de segments {start, end, text}. Le timing est lu depuis le fichier — jamais estimé.
Transformez du verbose_json Whisper, une sortie whisper.cpp ou tout JSON de transcription synchronisé en sous-titres SRT propres. C'est gratuit pour commencer, chiffré en transit, et un lot entier est converti en un seul ZIP — connectez-vous pour les gros fichiers et les volumes importants.
Questions fréquentes sur JSON en SRT
Quels formats JSON sont pris en charge ?
Le verbose_json d’OpenAI Whisper (un tableau segments avec start/end en secondes), la sortie whisper.cpp (un tableau transcription avec offsets ou horodatages) et les tableaux génériques d’objets {start, end, text} — avec champs speaker optionnels, en secondes ou en millisecondes.
Comment obtenir du verbose_json depuis Whisper ?
Avec l’API OpenAI, réglez response_format sur verbose_json. En exécutant Whisper en local, la sortie .json par défaut fonctionne ; le fichier --output-json de whisper.cpp fonctionne aussi.
Mon JSON n’a qu’un simple champ text — peut-il être converti ?
Non. Le SRT a besoin de temps de début et de fin par segment, et une transcription en texte nu n’en a pas. Réexportez avec le timing par segment (verbose_json pour Whisper) et la conversion fonctionnera.
Les noms d’intervenants issus de la diarisation sont-ils conservés ?
Oui — les segments portant un champ speaker ressortent en sous-titres SRT étiquetés, de sorte que les transcriptions diarisées restent attribuées.
Et si mon fichier est un JSON de transcription Premiere Pro ?
Utilisez le convertisseur de transcription Premiere en SRT sur /prtranscript/srt — il lit directement le format de transcription de Premiere (y compris les fichiers .prtranscript binaires).
Guides pour ce workflow
- Transcript → SRT subtitlesThe one requirement (timestamps), the formats that convert directly, how cue timing really works, and the honest answer on untimed text.Lire le guide
- Add SRT subtitles in ResolveThe native import path, the timecode gotcha that hides your subtitles an hour away, and the FCPXML route when you want styleable titles instead of captions.Lire le guide
- Whisper JSON → SRTWhat verbose_json actually contains, the converter route, the CLI flag that skips the problem, and the timestamp math that breaks hand-rolled scripts.Lire le guide
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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
Convert a batch within your allowance and download a single ZIP, or one file if that is all you need.
Made for editors
Whole timelines from Premiere, Final Cut and Avid with transitions, markers, titles, keyframes, levels, nests and bins; captions that keep their italics, colour, placement and speakers across SRT, VTT, ASS, TTML, iTT, SCC and STL, any of them in, any of them out; transcripts into Premiere with the words the engine timed. Frame rates and timecode handled the way post expects.
Private by design
Files are converted in your browser. Queued files can be saved locally to restore your job after checkout. Conversion metadata helps us diagnose errors; file contents are not uploaded.
Questions, answered
Where are my files processed?
In your browser. The converter runs on your own machine and the file never leaves it; the site only records that a conversion happened. CutConvert never sees, stores, sells or shares your media.
Is it free? Do I need an account?
About an hour of footage per file is free, on every converter: 100 KB of subtitles or captions, 500 KB of Word transcript, 2 MB of transcript JSON, 1 MB of Resolve project, 5 MB of Final Cut XML, with Premiere projects and Avid AAF a little under the hour. CapCut projects are free up to 500 KB, a short edit, since their size follows how much is in the edit rather than its length. Guests get five conversions a month, a free account has no monthly cap within those sizes, and above that project-to-project transfers are $5 per file. Every other conversion is $3, including project files to captions, reports or cut lists, and captions or transcripts into an editor. Pro is $9 a month ($90 a year) for every file type up to 50 MB; Studio is $19 a month ($190 a year) for files up to 500 MB. Paid-file access lasts 24 hours.
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 get that one file back, no ZIP. Tick extra formats under the output chips and the same ZIP carries every one of them, and a file counts as one conversion whatever it is written to.
Which formats are supported?
Timelines: Premiere .prproj, DaVinci Resolve .drp (as exported, or gzip- or Zstandard-wrapped), Avid AAF and Final Cut FCPXML in; FCP7 XML, FCPXML, Resolve .drp, CMX 3600 EDL and shot-list CSV out. A Premiere or Final Cut edit travels with its transitions, markers, titles, opacity and scale keyframes, clip volume, speed changes, nested sequences, bins, audio channel routing and each file's own frame rate, wherever the output has a place for them; an Avid AAF brings its transitions, markers, clip levels with their keyframes, muted tracks, nested stacks and each clip's own rate. Captions and transcripts, read and written: SRT, WebVTT, SBV, ASS, TTML, DFXP, iTT, SCC, MCC (a second 608 channel comes out as its own file), EBU-STL, Avid caption TXT, CapCut drafts of any size, timed CSV, Word, plain text, Whisper, WhisperX, AssemblyAI, Deepgram, Rev.ai and CapCut JSON, TwitchDownloader chat logs as a chat replay, Premiere transcript JSON and .prtranscript, Rev, Otter and Word-style transcripts, with italics, colour, placement and speakers kept where the output can hold them and measured word timing into Premiere. EDLs become event CSV reports. The capability table lists what every pair keeps.
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.