cut-video-and-srt.js

import "@johnlindquist/kit"
const replaceAll = await npm('just-replace-all')
const leadingZeros = await npm('leading-zeros')
// Name:

/*
*  Highlight the long video we are taking clips out of in Finder
*/
let longVideoFile = await getSelectedFile()

await(hide)


/**
 * Tell kit we want to be working in the same directory as the source file
 */
cd(path.dirname(longVideoFile))

let originalFileName = path.parse(longVideoFile).name

// try to read a .timestamps file
let timestampsFile = await readFile(`${originalFileName}.timestamps`, 'utf8')

let cutsToMake = []

// if there's a .timestamps file, use it
// otherwise manually edit the `cutsToMake` array

if (timestampsFile.length > 0) {

  let splitTimestampsFile = timestampsFile.split('\n').map((line, index) => {
    let [key, value] = line.split(';')
    return { [key]: value }
  })

  cutsToMake = splitTimestampsFile.reduce((acc, item, index) => {
    if (item.from) {
      acc.push({
        from: item.from,
        to: splitTimestampsFile[index + 1].to,
        desc: `${originalFileName}-segment${leadingZeros(parseInt(splitTimestampsFile[index + 2].part), 1)}`
      })
    }
    return acc
  }, [])

} else {
  
  // Remember to increment the desc number!
  cutsToMake = [
    {
        "from": "00:00:37.517",
        "to": "01:15:18.516",
        "desc": `${originalFileName}-segment01`
    },
    // {
    //       "from": "00:25:25.000",
    //       "to": "00:51:07",
    //       "desc": `${originalFileName}-segment02`
    // },
    // {
    //     "from": "00:54:21.517",
    //     "to": "00:58:47.400",
    //     "desc": `${originalFileName}-segment03`
    // },
    
  ]
}



for (let cut of cutsToMake) {
  let clipFileName = `${replaceAll(cut.desc, ' ', '_')}`

  await exec(`ffmpeg -i "${longVideoFile}" -c copy -ss ${cut.from} ${cut.to ? `-to ${cut.to}`: ''} ${clipFileName}.mp4`)
}

// split srt also
for (let cut of cutsToMake) {
  let clipFileName = `${replaceAll(cut.desc, ' ', '_')}`
  try {
    await exec(`ffmpeg -i "${originalFileName}.srt" -c copy -ss ${cut.from} ${cut.to ? `-to ${cut.to}`: ''} ${clipFileName}.srt`)
  } catch (err) {
    console.log(`No SRT found for ${clipFileName}`)
  }
}