exec command doesn't work with variables added, but works without variables variables added

I'm trying to execute python file made by CaryKH called jumpcutter.py using child process

This is a working function, where the exec command does work:

function executePython(){ const { exec } = require('child_process'); const path = require('path'); var input = document.getElementById('input').value var output = document.getElementById('output').value var silent = document.getElementById('silent').value var sounded = document.getElementById('sounded').value var margin = document.getElementById('margin').value alert(input) exec('python jumpcutter.py --input_file wow.mp4 --output_file wowcut.mp4 --silent_speed 999999 --sounded_speed 1 --frame_margin 1') } 

However, when I do this:

exec('python jumpcutter.py --input_file ' +input ' --output_file ' +output ' --silent_speed ' +silent ' --sounded_speed ' +sounded ' --frame_margin ' +margin) 

the code doesn't work entirely, so even the alert no longer works, even though it did prior. I have already tried to store the console command in a variable called text but to no prevail.

Thank you in advance for any assistance :)