mirror of
https://github.com/alphacep/vosk-api.git
synced 2026-02-05 04:49:53 +08:00
02ef49f67e
This patch is a small extension to the WebVTT example which allows to
directly save the WebVTT output to a file like this:
./test_webvtt.py test.wav out.vtt
72 lines
1.8 KiB
Python
Executable File
72 lines
1.8 KiB
Python
Executable File
#!/usr/bin/env python3
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from vosk import Model, KaldiRecognizer, SetLogLevel
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from webvtt import WebVTT, Caption
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import sys
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import os
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import subprocess
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import json
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import textwrap
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SetLogLevel(-1)
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if not os.path.exists('model'):
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print('Please download the model from https://alphacephei.com/vosk/models'
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' and unpack as `model` in the current folder.')
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exit(1)
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sample_rate = 16000
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model = Model('model')
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rec = KaldiRecognizer(model, sample_rate)
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WORDS_PER_LINE = 7
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def timeString(seconds):
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minutes = seconds / 60
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seconds = seconds % 60
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hours = int(minutes / 60)
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minutes = int(minutes % 60)
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return '%i:%02i:%06.3f' % (hours, minutes, seconds)
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def transcribe():
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command = ['ffmpeg', '-nostdin', '-loglevel', 'quiet', '-i', sys.argv[1],
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'-ar', str(sample_rate), '-ac', '1', '-f', 's16le', '-']
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process = subprocess.Popen(command, stdout=subprocess.PIPE)
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results = []
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while True:
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data = process.stdout.read(4000)
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if len(data) == 0:
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break
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if rec.AcceptWaveform(data):
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results.append(rec.Result())
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results.append(rec.FinalResult())
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vtt = WebVTT()
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for i, res in enumerate(results):
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words = json.loads(res).get('result')
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if not words:
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continue
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start = timeString(words[0]['start'])
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end = timeString(words[-1]['end'])
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content = ' '.join([w['word'] for w in words])
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caption = Caption(start, end, textwrap.fill(content))
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vtt.captions.append(caption)
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# save or return webvtt
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if len(sys.argv) > 2:
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vtt.save(sys.argv[2])
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else:
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print(vtt.content)
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if __name__ == '__main__':
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if not (1 < len(sys.argv) < 4):
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print(f'Usage: {sys.argv[0]} audiofile [output file]')
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exit(1)
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transcribe()
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