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transcriber

An experimental command line application for transcribing audio files, written in Swift. Supports macOS Catalina (and above?) only.

Usage

$ ./transcriber --help 
Usage:

    $ ./transcriber

Options:
    --list-locales [default: false] - Print the set of supported locales (then exit)
    --file [default: ] - Audio file to be transcribed
    --locale [default: en_NZ] - Locale of the speakers (use --list-locales for options)

Examples

$ ./transcriber --file sample.mp3

Recognising audio. This will take about as long as the length of the clip...
This is a sample sentence

Development

Assuming you have XCode installed on your Mac, swift build should do what you need.

Caveats

  • Requires macOS Catalina
  • Apple's restrictions on speech recognition are not well-documented, but you might find you are rejected if you make too many requests.
  • Clips longer than 1 minute will return a truncated transcript.
  • I couldn't get offline recognition to work (all locales report that it is not supported).

If you can't get it to work, try these things:

  • Check your internet connection.
  • Ensure you have authorised Speech Recognition if macOS asks you.
  • Ensure Siri is enabled in macOS Settings.
  • Try a shorter audio file (usually anything longer than 1 minute is rejected or truncated).
  • Wait and try again - Apple limits the number of server requests per hour.
  • Use a macOS supported audio file format (aac, wav, mp3 etc).