Vosk-api how to run ffmpeg?

Question

linux

using it you can do transcription, tell me how to run this program

Answer 1

Usage examples, Python:

git clone https://github.com/alphacep/vosk-api
cd vosk-api/python/example
wget https://alphacephei.com/kaldi/models/vosk-model-small-en-us-0.15.zip
unzip vosk-model-small-en-us-0.15.zip
mv vosk-model-small-en-us-0.15 model
python3 ./test_simple.py test.wav

spoiler

#!/usr/bin/env python3

from vosk import Model, KaldiRecognizer, SetLogLevel
import sys
import os
import wave
import subprocess

SetLogLevel(0)

if not os.path.exists("model"):
    print ("Please download the model from https://alphacephei.com/vosk/models and unpack as 'model' in the current folder.")
    exit (1)

sample_rate=16000
model = Model("model")
rec = KaldiRecognizer(model, sample_rate)

process = subprocess.Popen(['ffmpeg', '-loglevel', 'quiet', '-i',
                            sys.argv[1],
                            '-ar', str(sample_rate) , '-ac', '1', '-f', 's16le', '-'],
                            stdout=subprocess.PIPE)

while True:
    data = process.stdout.read(4000)
    if len(data) == 0:
        break
    if rec.AcceptWaveform(data):
        print(rec.Result())
    else:
        print(rec.PartialResult())

print(rec.FinalResult())