node-media-processor

provide as a utility tool for manipulate media files or streams. The origianl idea is copied from node-record-lpcm16.

The package was tested based on SoX 14.4.2, there could be a change on the command arguments between previous version.

Installation

npm i @antonyxuan/media-processor

Dependencies

Generally, running npm install should suffice.

This module requires you to install SoX and it must be available in your $PATH.

For Mac OS

brew install sox

For most linux disto's

sudo apt-get install sox libsox-fmt-all

For Windows

download the binaries

Options

sampleRate            : 16000   // audio sample rate
channels              : 1       // number of channels
threshold             : 0.5     // silence threshold (rec only)
endOnSilence          : false   // automatically end on silence (if supported)
thresholdStart        : null    // silence threshold to start recording, overrides threshold (rec only)
thresholdEnd          : null    // silence threshold to end recording, overrides threshold (rec only)
silence               : '1.0'   // seconds of silence before ending
recorder              : 'sox'   // Defaults to 'sox'
device                : null    // recording device (e.g.: 'plughw:1')
audioType             : 'waveaudio'  // audio type to record
input                 : '--default-device'  // either default device or a path to input file
output                : '-p'    // '-p' for process as stream, file path for save as a file.

Usage

To be provided

Porcessors

The following processors are included:

• sox

Error handling

Some processor might be logging errors to stderr and throw an exit code. You can catch early termination by adding an error event listener to the stream.

To debug the recorder see debugging below.

recording.stream()
  .on('error', err => {
    console.error('recorder threw an error:', err)
  })
  .pipe(file)