Drop an MP3, WAV or M4A, a podcast, an interview or a voice note, and download an SRT file with every line timed to the speech. No sign-up, nothing to install, and the subtitle files are free for any recording up to ten minutes.
Live preview, rendered on this page by the same engine that burns your video.
MP3, WAV and M4A, and AAC, OGG, FLAC or Opus files your browser can play. Up to ten minutes on any device. On a computer, a recording up to 90 minutes in M4A, MP3 or WAV, with AAC, MP3 or plain sound inside.
A script of every word as heard, timed, in paragraphs where the speaker stopped. Correct any word with a click, then download SRT, VTT, ASS or plain text, in the language spoken or translated into another.
Captions burned into the picture, the best 30 or 60 seconds, backgrounds and new shapes all work on a picture, so they need a video file. An audio file never uses one of your two free videos.
On a computer, an English recording is written by default by OpenAI's Whisper model running in your browser: it downloads once (about 190 MB with a graphics chip, 80 MB without, then cached) and the sound never leaves your machine. For another language, or on a phone, Burncaps offers our speech service, which writes it in seconds: the sound goes in short pieces to Microsoft's MAI-Transcribe in the EU, never anything else, and nothing is kept. It writes 25 minutes of sound in any 30 days without Pro; after that, your own device listens instead, without a limit.
| What matters | Audio to SRT on Burncaps |
|---|---|
| Price | Subtitle files are free without limit for recordings up to ten minutes; over ten minutes, the first ten are free and Pro, $49 once, does the whole recording |
| Length | Ten minutes on any device; up to 90 minutes on a computer |
| File size | Up to 1.2 GB on a computer (10 GB for a recording over ten minutes), 250 MB on a phone |
| Speakers | One script for everyone who speaks, without speaker names |
| Account | None |
| Captions burned into a video | Need a video file. Free to use: two videos every 30 days with no mark, or $49 once for unlimited videos. |
Drop the MP3 on this page, wait while it listens, check the words in the script, then click SRT. WAV, M4A and most other audio files work the same way. There is no account and nothing to install.
On a computer, a recording up to 90 minutes and 10 GB (M4A, MP3 or WAV, or a video file) gives its script and subtitle files. Without Pro the first ten minutes are free, and Pro, $49 once, does the whole recording. On a phone, recordings up to ten minutes and 250 MB.
No. It writes every word with its time, but not who said it, so an interview comes back as one script without speaker names.
Only if you choose our speech service. On a computer, an English recording is written by a speech model running in your browser and the sound never leaves your device. A phone, or a recording in another language, is offered our speech service: then the sound goes in short pieces to Microsoft's MAI-Transcribe in the EU, and nothing is kept. You can check this in your browser's network tab.
No. A free video is counted only when a video with captions burned in is exported. Subtitle files from audio are free without limit for recordings up to ten minutes.
37. It listens first and names the language it hears, and you can change it in one click. Twelve Indian languages can also be written on your own device by a speech model made for each one.
What it is: a browser tool that burns animated word-by-word captions into a talking video, or cuts it to its best 30 or 60 seconds.
Price: free with every feature, for two videos every 30 days with no mark; Pro, $49 once, gives unlimited videos with no mark. Pro is not a subscription.
Privacy: the video never leaves your browser. The sound leaves only if you choose our speech service.
Files: MP4 or MOV up to ten minutes in; an MP4 with the captions burned in out. SRT, VTT, ASS and text files are free without limit for recordings up to ten minutes. A longer recording, up to 90 minutes on a computer, gives its script and those files: the first ten minutes free, all of it with Pro.
Languages and styles: captions in the language spoken, twelve Indian languages heard on your device, translation into 37 languages, 20 caption styles.
After it listens: correct any word (one click changes it everywhere), add or cut words, one to six words at a time, position, size, text and highlight colours, and names this browser remembers, all free and without listening again.
Made by: Jordan Labs Ltd, UK company no. 17358646.
Against other tools: fifteen caption tools compared, from the vendors' own pages.