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Audio to VTT

Audio to VTT, any recording into WebVTT

Turn any audio recording into a WebVTT caption file on your own computer, with no upload and no per-minute billing. If you know your format, there is a dedicated guide for it - links below.

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Generate VTT locally, nothing uploaded

No account · Nothing uploaded

Convert audio to a VTT caption file

VTT is the caption format the web uses: HTML5 video players, YouTube, and streaming platforms accept .vtt files natively. If you have audio you are pairing with a video on the web, generating a VTT is the right output. SnailText transcribes the audio and writes a phrase-level VTT, all locally.

It works with MP3, WAV, M4A, AAC, OGG, Opus, and FLAC out of the box. The result is a standard .vtt file ready to pair with your media.

How to convert audio to VTT

  1. Open the Transcribe files screen in SnailText.
  2. Add your audio file (MP3, WAV, M4A, and more) or a folder of them.
  3. Choose VTT as the output before you run it.
  4. Run it. The .vtt file is saved next to your audio.

Try it on your own files

Download for Mac

Generate VTT locally, nothing uploaded

Which format are you starting from?

Every common audio format works the moment you install, with no extra codec download, and the process is identical for all of them. If you want the specifics for the file you have, each format has its own page: MP3 to VTT, WAV to VTT, M4A to VTT, AAC to VTT, FLAC to VTT, OGG to VTT, Opus to VTT, WMA to VTT and AIFF to VTT.

WebVTT is the format HTML5 video wants, so this is the one to pick for the web. Online tools upload your recording to a server and cap the free tier; SnailText keeps the audio on your machine. If you are starting from a video rather than an audio recording, video to VTT is the page for that.

Audio to VTT FAQ

Which audio formats can become a VTT?
MP3, WAV, M4A, AAC, OGG, Opus, FLAC, WMA and AIFF all work the moment you install, with no extra codec download, and the steps are the same for each. Each format also has its own page with the specifics, linked above.
What is the difference between VTT and SRT for audio?
VTT (WebVTT) is the web caption standard, used by HTML5 video and YouTube. SRT is older and more widely supported by media players. Both are generated from the same transcription, with the same phrase-level timing. Pick the format your target player or platform needs.
Can I use the VTT on YouTube?
Yes. YouTube accepts WebVTT (.vtt) files for manual caption upload. Once SnailText generates the VTT from your audio, you can upload it directly as a caption track for your video.
Will the subtitles be burned into the video you pair them with, or is the VTT a separate file?
No. SnailText writes a separate VTT file and does not hardcode captions into the video. That keeps the subtitles editable and lets you attach them in any player or editor. If you want them burned in, overlay the file in a video editor afterward.

More ways to transcribe and caption

All formats

Subtitle generator →

Turn any audio or video file into an SRT or VTT subtitle file. Automatic subtitles generated from the speech itself, on your own computer, with no upload, no per-minute billing and no watermark.

Same format, other output

Audio to SRT →

Guides by format

Subtitle hubs

All transcription formats →

Generate a VTT from your audio

Free local subtitle generation, no account needed. VTT files on Mac and Windows.

Download for Mac Or for Windows →