I am trying to transcribe audio from a stream using this tutorial (section, "Performing streaming speech recognition on a local file"): https://cloud.google.com/speech-to-text/docs/streaming-recognize
The file is an M3U file, so I am trying to use the RecognitionConfig.AudioEncoding.MP3 option, but the MP3 attribute is being rejected. When I try to autocomplete the option, MP3 does not appear either.
The documentation show that the MP3 attribute is only available in version v1beta1 (https://cloud.google.com/text-to-speech/docs/reference/rpc/google.cloud.texttospeech.v1beta1#google.cloud.texttospeech.v1beta1.AudioEncoding), and I ran the pip upgrade.
Is there something else I need to do to install v1beta1?
Note that the second link you shared, regarding v1beta1, is for the Text-to-Speech API which is the other way around of the examples you are following (Speech-to-Text API).
In that case, to use RecognitionConfig.AudioEncoding.MP3, you'll need to use the v1p1beta1 version instead. No changes are needed to the pip command (pip install --upgrade google-cloud-speech) but you need to import the right version (speech_v1p1beta1) in your Python code:
# [START speech_transcribe_streaming]
def transcribe_streaming(stream_file):
"""Streams transcription of the given audio file."""
import io
from google.cloud import speech_v1p1beta1
from google.cloud.speech_v1p1beta1 import enums
from google.cloud.speech_v1p1beta1 import types
client = speech_v1p1beta1.SpeechClient()
And now you can use the MP3 encoding:
config = types.RecognitionConfig(
encoding=enums.RecognitionConfig.AudioEncoding.MP3,
sample_rate_hertz=16000,
language_code='en-US')
streaming_config = types.StreamingRecognitionConfig(config=config)
Full code here but it's just the base example with the previous changes.
Tested with an MP3 sample:
$ python mp3.py sample.mp3
Finished: True
Stability: 0.0
Confidence: 0.9875912666320801
Transcript: I'm sorry Dave I'm afraid I can't do that