async google long speech recognition with polling

Async google long speech recognition with polling

import io
import os
import time 
# Imports the Google Cloud client libraryfrom google.cloud import speech
from google.cloud.speech import enums
from google.cloud.speech import types

def transcribe_gcs(gcs_uri):
    """Asynchronously transcribes the audio file specified by the gcs_uri."""    from google.cloud import speech
    from google.cloud.speech import enums
    from google.cloud.speech import types
    client = speech.SpeechClient()

    audio = types.RecognitionAudio(uri=gcs_uri)
    config = types.RecognitionConfig(
        # encoding=enums.RecognitionConfig.AudioEncoding.FLAC,        # sample_rate_hertz=16000,        language_code='en-US')

    operation = client.long_running_recognize(config, audio)

    print('Waiting for operation to complete...')

    retry_count = 1000000    while retry_count and not operation.done():
        retry_count -=1        print("transcription not complete .. will try after 10 secs")
        time.sleep(10)
        # operation.poll()        print(operation.done())
        print(retry_count)

    response = operation.result()


    # Each result is for a consecutive portion of the audio. Iterate through    # them to get the transcripts for the entire audio file.    for result in response.results:
        # The first alternative is the most likely one for this portion.        print(u'Transcript: {}'.format(result.alternatives[0].transcript))
        print('Confidence: {}'.format(result.alternatives[0].confidence))


start_time = time.time()
transcribe_gcs("gs://__________")# google cloud stroage uri
total_time = time.time() - start_time
print("seconds " + str(total_time ))
print("minute "+ str((total_time/60)))

Notes:

A 30 mins video took 

seconds 483.78773856163025
minute 8.063128976027171

time to complete

whereas autosub completed it in 3.5 mins

sync google speech recognition time taken data

1. a 20 sec audio file took 9.77 seconds

2. a 34 sec audio file took 14 sec

3. on long recog 1min 30 sec video took 28.8 secs