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wilforlan/silence-info.js

Last active March 9, 2020 22:26
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Get the Silence Information of an audio file.
Raw
silence-info.js
const fs = require('fs');
const readline = require('readline');
const { exec } = require('child_process');
let MATCH_REGEX = /silence_end.*|silence_start.*/gm
const findSilenceParts = (stream, callback, options = {}) => {
return new Promise((resolve, reject) => {
let { overrideRegex } = options
let matches = [];
let duration = null;
var lineReader = readline.createInterface({
input: stream
});
lineReader.on('line', function (line) {
let match = line.match(overrideRegex || MATCH_REGEX);
if(!duration) duration = line.match(/Duration: (\d\d):(\d\d):(\d\d(\.\d\d)?)/g);
if(match) matches.push(match[0]);
});
lineReader.on('close', () => {
resolve({ matches, duration: (duration && duration[0] && duration[0].split('Duration: '))[1]}); // find a better way get duration
});
})
};
const getLogPath = (file, find, replace) => {
let lk = file.split('/');
let logPath = lk[lk.length - 1];
return logPath.replace(find, replace);
};
const rm = (file) => {
fs.unlink(file, (err) => {
if(err) { console.log(err) }
else { console.log(`Remove file: ${file}`)}
});
};
const getSilenceInFile = (inputFile, useLog = null) => {
// ffmpeg -i /Users/wilforlan/Documents/Fireflies/voice-puppet-ff/store/TestWebSocketsFF-de07a7c5.mp3 -filter_complex "[0:a]silencedetect=n=-50dB:d=1[outa]" -map [outa] call-3.mp3 -y 2>&1 | cut -d 'l' -f 3 | cut -d ']' -f 2 | cut -d "|" -f 1 > log-2.txt
let logPath = getLogPath(inputFile, '.mp3', '-silencelog.log');
let tempReWritePath = getLogPath(inputFile, '.mp3', '-temp.mp3');
let cmd = `ffmpeg -i ${inputFile} -filter_complex "[0:a]silencedetect=n=-50dB:d=1[outa]" -map [outa] ${tempReWritePath} -y 2>&1 | cut -d ']' -f 2 | cut -d "|" -f 1 > ${logPath}`;
console.log({ cmd });
return new Promise((resolve, reject) => {
if(useLog) return resolve(useLog); // testing purposes if you already have a log file
exec(cmd, (err, stdout) => {
if(err) reject(err);
rm(tempReWritePath);
resolve(logPath);
});
});
};
const chunkArray = (arr, n) => {
return new Array(Math.ceil(arr.length / n)).fill("")
.map(function() { return this.splice(0, n) }, arr.slice());
}
function sec2time(timeInSeconds) {
var pad = function(num, size) { return ('000' + num).slice(size * -1); },
time = parseFloat(timeInSeconds).toFixed(3),
hours = Math.floor(time / 60 / 60),
minutes = Math.floor(time / 60) % 60,
seconds = Math.floor(time - minutes * 60),
milliseconds = time.slice(-3);
return pad(hours, 2) + ':' + pad(minutes, 2) + ':' + pad(seconds, 2) + '.' + pad(milliseconds, 2);
}
const buildFinalResults = (match) => {
return new Promise((resolve, reject) => {
let result = chunkArray(match, 2).map( innerArray => {
let silence_start = parseFloat(innerArray[0].split("silence_start: ")[1]);
let silence_end = parseFloat(innerArray[1].split("silence_end: ")[1]);
let diff = (silence_end - silence_start).toFixed(3);
return {
diff,
parsed: {
silence_start: sec2time(silence_start),
silence_end: sec2time(silence_end)
},
raw: {
silence_start,
silence_end
}
}
});
let totalSilenceDuration = result.reduce((acc, obj) => {
return acc + parseFloat(obj.diff)
}, 0.0); // in seconds
resolve({ result, totalSilenceDuration, totalSilenceDurationInMins: sec2time(totalSilenceDuration) });
})
};
// Usage
(async () => {
try {
let log = await getSilenceInFile("https://somelink.mp3", "path-to-log/call-67243012-silencelog.log");
let { matches, duration } = await findSilenceParts(fs.createReadStream(log))
let response = await buildFinalResults(matches);
if(response) response.duration = duration
// rm(log);
console.log("%j", response)
// Check the comment section for a sample of the JSON Log and a sample log file.
} catch (error) {
}
})();
@wilforlan
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Author 

{
  "result": [
    {
      "diff": "1.092",
      "parsed": {
        "silence_start": "00:03:18.97",
        "silence_end": "00:03:19.89"
      },
      "raw": {
        "silence_start": 198.897,
        "silence_end": 199.989
      }
    },
    {
      "diff": "1.066",
      "parsed": {
        "silence_start": "00:03:23.15",
        "silence_end": "00:03:24.81"
      },
      "raw": {
        "silence_start": 203.915,
        "silence_end": 204.981
      }
    },
    {
      "diff": "1.287",
      "parsed": {
        "silence_start": "00:03:26.11",
        "silence_end": "00:03:27.98"
      },
      "raw": {
        "silence_start": 206.111,
        "silence_end": 207.398
      }
    },
    {
      "diff": "1.032",
      "parsed": {
        "silence_start": "00:03:53.76",
        "silence_end": "00:03:54.08"
      },
      "raw": {
        "silence_start": 233.476,
        "silence_end": 234.508
      }
    },
    {
      "diff": "1.097",
      "parsed": {
        "silence_start": "00:04:03.36",
        "silence_end": "00:04:04.33"
      },
      "raw": {
        "silence_start": 243.236,
        "silence_end": 244.333
      }
    },
    {
      "diff": "1.200",
      "parsed": {
        "silence_start": "00:04:11.19",
        "silence_end": "00:04:12.19"
      },
      "raw": {
        "silence_start": 251.319,
        "silence_end": 252.519
      }
    },
    {
      "diff": "1.281",
      "parsed": {
        "silence_start": "00:05:23.23",
        "silence_end": "00:05:24.04"
      },
      "raw": {
        "silence_start": 323.123,
        "silence_end": 324.404
      }
    },
    {
      "diff": "1.009",
      "parsed": {
        "silence_start": "00:06:21.42",
        "silence_end": "00:06:22.51"
      },
      "raw": {
        "silence_start": 381.242,
        "silence_end": 382.251
      }
    },
    {
      "diff": "1.661",
      "parsed": {
        "silence_start": "00:08:28.28",
        "silence_end": "00:08:30.89"
      },
      "raw": {
        "silence_start": 508.828,
        "silence_end": 510.489
      }
    },
    {
      "diff": "1.243",
      "parsed": {
        "silence_start": "00:08:40.75",
        "silence_end": "00:08:42.18"
      },
      "raw": {
        "silence_start": 520.775,
        "silence_end": 522.018
      }
    },
    {
      "diff": "1.106",
      "parsed": {
        "silence_start": "00:10:22.35",
        "silence_end": "00:10:23.41"
      },
      "raw": {
        "silence_start": 622.635,
        "silence_end": 623.741
      }
    },
    {
      "diff": "1.679",
      "parsed": {
        "silence_start": "00:10:37.85",
        "silence_end": "00:10:39.64"
      },
      "raw": {
        "silence_start": 637.885,
        "silence_end": 639.564
      }
    },
    {
      "diff": "1.350",
      "parsed": {
        "silence_start": "00:12:20.68",
        "silence_end": "00:12:22.18"
      },
      "raw": {
        "silence_start": 740.868,
        "silence_end": 742.218
      }
    },
    {
      "diff": "1.008",
      "parsed": {
        "silence_start": "00:12:46.65",
        "silence_end": "00:12:47.73"
      },
      "raw": {
        "silence_start": 766.365,
        "silence_end": 767.373
      }
    },
    {
      "diff": "1.489",
      "parsed": {
        "silence_start": "00:13:07.32",
        "silence_end": "00:13:08.21"
      },
      "raw": {
        "silence_start": 787.332,
        "silence_end": 788.821
      }
    },
    {
      "diff": "1.651",
      "parsed": {
        "silence_start": "00:14:02.53",
        "silence_end": "00:14:04.04"
      },
      "raw": {
        "silence_start": 842.353,
        "silence_end": 844.004
      }
    },
    {
      "diff": "1.685",
      "parsed": {
        "silence_start": "00:14:29.76",
        "silence_end": "00:14:31.61"
      },
      "raw": {
        "silence_start": 869.676,
        "silence_end": 871.361
      }
    },
    {
      "diff": "1.838",
      "parsed": {
        "silence_start": "00:14:34.52",
        "silence_end": "00:14:36.90"
      },
      "raw": {
        "silence_start": 874.452,
        "silence_end": 876.29
      }
    },
    {
      "diff": "2.240",
      "parsed": {
        "silence_start": "00:18:43.60",
        "silence_end": "00:18:45.00"
      },
      "raw": {
        "silence_start": 1123.16,
        "silence_end": 1125.4
      }
    },
    {
      "diff": "639.320",
      "parsed": {
        "silence_start": "00:18:45.00",
        "silence_end": "00:29:24.20"
      },
      "raw": {
        "silence_start": 1125.4,
        "silence_end": 1764.72
      }
    }
  ],
  "totalSilenceDuration": 665.3340000000001,
  "totalSilenceDurationInMins": "00:11:05.34",
  "duration": "00:29:24.75"
}

@wilforlan
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Author

Sample Audio Log

ffmpeg version 4.1.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Input #0, mp3, from 'https://somelink.mp3':
  Metadata:
    encoder         : Lavf58.29.100
  Duration: 00:29:24.75, start: 0.025057, bitrate: 64 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 64 kb/s
    Metadata:
      encoder         : Lavc58.54
Stream mapping:
  Stream #0:0 (mp3float) -> silencedetect
  silencedetect -> Stream #0:0 (libmp3lame)
 to stop, [?
Output #0, mp3, to 'call-67243012-temp.mp3':
  Metadata:
    TSSE            : Lavf58.20.100
    Stream #0:0: Audio: mp3 (libmp3lame), 44100 Hz, stereo, fltp
    Metadata:
      encoder         : Lavc58.35.100 libmp3lame
 silence_start: 198.897
 silence_end: 199.989 
 silence_start: 203.915
 silence_end: 204.981 
 silence_start: 206.111
 silence_end: 207.398 
 silence_start: 233.476
 silence_end: 234.508 
 silence_start: 243.236
 silence_end: 244.333 
 silence_start: 251.319
 silence_end: 252.519 
 silence_start: 323.123
 silence_end: 324.404 
 silence_start: 381.242
 silence_end: 382.251 
 silence_start: 508.828
 silence_end: 510.489 
 silence_start: 520.775
 silence_end: 522.018 
 silence_start: 622.635
 silence_end: 623.741 
 silence_start: 637.885
 silence_end: 639.564 
 silence_start: 740.868
 silence_end: 742.218 
 silence_start: 766.365
 silence_end: 767.373 
 silence_start: 787.332
 silence_end: 788.821 
 silence_start: 842.353
 silence_end: 844.004 
 silence_start: 869.676
 silence_end: 871.361 
 silence_start: 874.452
 silence_end: 876.29 
 silence_start: 1123.16
 silence_end: 1125.4 
 silence_start: 1125.4
size=   17664kB time=00:18:51.31 bitrate= 127.9kbits/s speed=10.2x    
size=   17664kB time=00:18:55.64 bitrate= 127.4kbits/s speed=10.2x    
size=   17664kB time=00:18:59.61 bitrate= 127.0kbits/s speed=10.2x    
size=   17664kB time=00:19:04.34 bitrate= 126.5kbits/s speed=10.2x    
size=   17920kB time=00:19:10.87 bitrate= 127.6kbits/s speed=10.2x    
size=   17920kB time=00:19:17.27 bitrate= 126.8kbits/s speed=10.2x    
size=   17920kB time=00:19:19.60 bitrate= 126.6kbits/s speed=10.2x    
size=   18176kB time=00:19:26.10 bitrate= 127.7kbits/s speed=10.1x    
size=   18176kB time=00:19:32.63 bitrate= 127.0kbits/s speed=10.1x    
size=   18176kB time=00:19:37.00 bitrate= 126.5kbits/s speed=10.1x    
size=   18432kB time=00:19:43.53 bitrate= 127.6kbits/s speed=  10x    
size=   18432kB time=00:19:47.86 bitrate= 127.1kbits/s speed=  10x    
size=   18432kB time=00:19:52.22 bitrate= 126.6kbits/s speed=9.97x    
size=   18432kB time=00:19:54.39 bitrate= 126.4kbits/s speed=9.95x    
size=   18688kB time=00:20:00.79 bitrate= 127.5kbits/s speed=9.95x    
size=   18688kB time=00:20:03.12 bitrate= 127.2kbits/s speed=9.93x    
size=   18688kB time=00:20:07.45 bitrate= 126.8kbits/s speed=9.92x    
size=   18944kB time=00:20:13.98 bitrate= 127.8kbits/s speed=9.92x    
size=   18944kB time=00:20:20.52 bitrate= 127.2kbits/s speed=9.93x    
size=   18944kB time=00:20:27.05 bitrate= 126.5kbits/s speed=9.94x    
size=   19200kB time=00:20:33.58 bitrate= 127.5kbits/s speed=9.93x    
size=   19200kB time=00:20:42.28 bitrate= 126.6kbits/s speed=9.96x    
size=   19456kB time=00:20:53.14 bitrate= 127.2kbits/s speed=9.99x    
size=   19712kB time=00:21:02.10 bitrate= 127.9kbits/s speed=  10x    
size=   19712kB time=00:21:08.40 bitrate= 127.3kbits/s speed=  10x    
size=   19712kB time=00:21:17.10 bitrate= 126.4kbits/s speed=  10x    
size=   19968kB time=00:21:25.66 bitrate= 127.2kbits/s speed=10.1x    
size=   20224kB time=00:21:34.49 bitrate= 128.0kbits/s speed=10.1x    
size=   20224kB time=00:21:41.02 bitrate= 127.3kbits/s speed=10.1x    
size=   20224kB time=00:21:47.42 bitrate= 126.7kbits/s speed=10.1x    
size=   20480kB time=00:21:51.92 bitrate= 127.9kbits/s speed=10.1x    
size=   20480kB time=00:21:56.25 bitrate= 127.5kbits/s speed=10.1x    
size=   20480kB time=00:22:02.16 bitrate= 126.9kbits/s speed=10.1x    
size=   20480kB time=00:22:04.95 bitrate= 126.6kbits/s speed=  10x    
size=   20736kB time=00:22:11.48 bitrate= 127.6kbits/s speed=  10x    
size=   20736kB time=00:22:15.85 bitrate= 127.2kbits/s speed=  10x    
size=   20736kB time=00:22:22.38 bitrate= 126.5kbits/s speed=  10x    
size=   20992kB time=00:22:28.78 bitrate= 127.5kbits/s speed=  10x    
size=   20992kB time=00:22:33.24 bitrate= 127.1kbits/s speed=  10x    
size=   20992kB time=00:22:37.61 bitrate= 126.7kbits/s speed=  10x    
size=   21248kB time=00:22:45.52 bitrate= 127.5kbits/s speed=  10x    
size=   21248kB time=00:22:48.47 bitrate= 127.2kbits/s speed=  10x    
size=   21248kB time=00:22:52.84 bitrate= 126.8kbits/s speed=9.98x    
size=   21504kB time=00:22:59.37 bitrate= 127.7kbits/s speed=9.98x    
size=   21504kB time=00:23:03.70 bitrate= 127.3kbits/s speed=9.98x    
size=   21504kB time=00:23:08.06 bitrate= 126.9kbits/s speed=9.97x    
size=   21760kB time=00:23:14.60 bitrate= 127.8kbits/s speed=9.98x    
size=   21760kB time=00:23:18.96 bitrate= 127.4kbits/s speed=9.97x    
size=   21760kB time=00:23:27.66 bitrate= 126.6kbits/s speed=9.98x    
size=   22016kB time=00:23:36.09 bitrate= 127.4kbits/s speed=  10x    
size=   22016kB time=00:23:40.72 bitrate= 126.9kbits/s speed=  10x    
size=   22272kB time=00:23:47.22 bitrate= 127.8kbits/s speed=  10x    
size=   22272kB time=00:23:55.95 bitrate= 127.1kbits/s speed=  10x    
size=   22272kB time=00:24:00.28 bitrate= 126.7kbits/s speed=  10x    
size=   22528kB time=00:24:11.57 bitrate= 127.1kbits/s speed=10.1x    
size=   22784kB time=00:24:19.88 bitrate= 127.9kbits/s speed=10.1x    
size=   22784kB time=00:24:32.94 bitrate= 126.7kbits/s speed=10.1x    
size=   23040kB time=00:24:46.00 bitrate= 127.0kbits/s speed=10.2x    
size=   23296kB time=00:24:52.50 bitrate= 127.9kbits/s speed=10.2x    
size=   23296kB time=00:25:01.23 bitrate= 127.1kbits/s speed=10.2x    
size=   23552kB time=00:25:14.16 bitrate= 127.4kbits/s speed=10.3x    
size=   23552kB time=00:25:20.48 bitrate= 126.9kbits/s speed=10.3x    
size=   23808kB time=00:25:25.16 bitrate= 127.9kbits/s speed=10.2x    
size=   23808kB time=00:25:31.69 bitrate= 127.3kbits/s speed=10.2x    
size=   23808kB time=00:25:38.22 bitrate= 126.8kbits/s speed=10.2x    
size=   24064kB time=00:25:44.75 bitrate= 127.6kbits/s speed=10.3x    
size=   24064kB time=00:25:51.28 bitrate= 127.1kbits/s speed=10.3x    
size=   24320kB time=00:25:57.78 bitrate= 127.9kbits/s speed=10.3x    
size=   24320kB time=00:26:04.31 bitrate= 127.4kbits/s speed=10.3x    
size=   24576kB time=00:26:13.04 bitrate= 128.0kbits/s speed=10.3x    
size=   24576kB time=00:26:19.54 bitrate= 127.5kbits/s speed=10.3x    
size=   24576kB time=00:26:28.14 bitrate= 126.8kbits/s speed=10.3x    
size=   24832kB time=00:26:32.60 bitrate= 127.7kbits/s speed=10.3x    
size=   24832kB time=00:26:39.13 bitrate= 127.2kbits/s speed=10.3x    
size=   25088kB time=00:26:45.66 bitrate= 128.0kbits/s speed=10.3x    
size=   25088kB time=00:27:00.89 bitrate= 126.8kbits/s speed=10.3x    
size=   25344kB time=00:27:11.79 bitrate= 127.2kbits/s speed=10.4x    
size=   25600kB time=00:27:24.82 bitrate= 127.5kbits/s speed=10.4x    
size=   25600kB time=00:27:31.35 bitrate= 127.0kbits/s speed=10.4x    
size=   25856kB time=00:27:40.08 bitrate= 127.6kbits/s speed=10.4x    
size=   25856kB time=00:27:45.07 bitrate= 127.2kbits/s speed=10.4x    
size=   25856kB time=00:27:50.94 bitrate= 126.8kbits/s speed=10.4x    
size=   26112kB time=00:27:57.48 bitrate= 127.5kbits/s speed=10.4x    
size=   26112kB time=00:28:06.17 bitrate= 126.9kbits/s speed=10.5x    
size=   26368kB time=00:28:14.77 bitrate= 127.5kbits/s speed=10.5x    
size=   26368kB time=00:28:19.24 bitrate= 127.1kbits/s speed=10.5x    
size=   26624kB time=00:28:25.79 bitrate= 127.9kbits/s speed=10.5x    
size=   26624kB time=00:28:34.46 bitrate= 127.2kbits/s speed=10.5x    
size=   26880kB time=00:28:45.36 bitrate= 127.6kbits/s speed=10.5x    
size=   26880kB time=00:28:54.06 bitrate= 127.0kbits/s speed=10.5x    
size=   27136kB time=00:28:58.39 bitrate= 127.9kbits/s speed=10.5x    
size=   27136kB time=00:29:05.18 bitrate= 127.4kbits/s speed=10.5x    
size=   27136kB time=00:29:12.79 bitrate= 126.8kbits/s speed=10.5x    
size=   27392kB time=00:29:20.15 bitrate= 127.5kbits/s speed=10.5x    
size=   27575kB time=00:29:24.72 bitrate= 128.0kbits/s speed=10.5x    
video:0kB audio:27574kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000896%
 silence_end: 1764.72

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