media-length.js

import "@johnlindquist/kit"


let files = await drop()

cd(path.dirname(files[0].path))

let lengthStrings = []

let totalSeconds = 0

// function that formats seconds into hours, minutes and seconds
function formatTime(totalSeconds) {
  let hours = Math.floor(totalSeconds / 3600)
  let minutes = Math.floor((totalSeconds - (hours * 3600)) / 60)
  let seconds = totalSeconds - (hours * 3600) - (minutes * 60)

  // round seconds
  seconds = Math.round(seconds * 100) / 100

  let result = (hours < 10 ? "0" + hours : hours)
  result += ":" + (minutes < 10 ? "0" + minutes : minutes)
  result += ":" + (seconds  < 10 ? "0" + seconds : seconds)

  // if hours is 0, don't show it
  if (hours === 0) {
    return result.substring(3)
  }

  return result
}

for (let file of files) {

  let {stdout} = await exec(`ffprobe -i "${file.path}" -show_entries format=duration -v quiet -of csv="p=0"`)
  let duration = parseFloat(stdout)
  let durationInSeconds = Math.round(duration)
  totalSeconds += durationInSeconds
  
  lengthStrings.push(`${file.name} - ${formatTime(durationInSeconds)}`)
}

let totalLength = formatTime(totalSeconds)
await div(`<div>${lengthStrings.join("<br/><br/>")}<br/><br/>Total length: ${totalLength}</div>s`)