read Local audio file STT Google speech-to-text

Question

I don't find how to send a local file using the Google STT in curl command line. As followed in their tuto, here my request.json :

{
"config": {
      "encoding":"FLAC",
      "sample_rate": 16000,
      "language_code": "fr-FR"
  },
  "audio": {
      "uri":"audio-file.flac"
  }
}

my command line is:

curl -s -X POST -H "Content-Type: application/json" --data-binary @request.json "https://speech.googleapis.com/v1beta1/speech:syncrecognize?key=MY_API_KEY"

But I receive the error result:

{
  "error": {
    "code": 400,
    "message": "RecognitionAudio not set.",
    "status": "INVALID_ARGUMENT"
  }
}

How can I write the request.json to send a local audio file ?? Thanks for help :)

Answer 1

You need to use the base64 in the content section of the request.json file. It should look something like this except with a lot more base64 data:

{
  'config': {
    "encoding":"FLAC",
    "sample_rate": 16000,
    "language_code": "fr-FR"
  },
  'audio': {
    'content':'UklGRuRDFQBXQVZFZm10IBAAAAABAAEAQB8AAIA+AAACABAAZGF0YcBDFQAIAAgACAAIAAgA
CAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgA
CAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgA
CAAIAAgACAAIAAgACAAIAAgACAAIAAgACAAIAAgACAD4/wgACAD4//j/+P8IAPj/+P8IAAgA
+P8IAAgACAAIAAgA+
'
  }
}