How to intercept video recording in FFMPEG?

Question

fmpeg

Is it possible to intercept frames when writing desktop by type: .on(data => { do something }) in Node?
I found the opportunity to both write to the RAM and to the disk via ffmpeg, I do this:

const command = ffmpeg('desktop')
  .duration(30)
  .size('1920x1080')
  .inputFPS(25)
  .addInputOption('-f gdigrab')
  .on('progress', e => {
    console.log(e)
  })
  .on('end', () => {
    console.log('Done!')
  })
  .on('error', err => {
    console.error(err.message)
  })
  .save(path.resolve(__dirname, 'files', 'output.mpg'))