Get info about about video streams in nodejs, using `ffprobe`

ffprobe-streams.js

const { exec } = require('child_process')
const { promisify } = require('util')
const unflatten = require('unflatten')

const run = promisify(exec)

// get stream info about a video file
const getStreams = async inFile => {
  const { stdout } = await run(`ffprobe -show_streams '${inFile}'`)
  const streams = stdout.replace(/\[\/STREAM\]/g, '').split('[STREAM]').filter(s => s.trim() !== '').map(streamText => {
    const stream = {}
    streamText.split('\n').forEach(line => {
      const l = line.trim()
      if (l && l !== '') {
        const [n, v] = l.split('=')
        stream[n.replace(/:/g, '.').toLowerCase()] = v
      }
    })
    return unflatten(stream)
  })
  return streams
}