convert-videos.ps1

$inputs = ls -R -F *.mp4
$i = 0
for ($input in $inputs) {
  Write-Progress -Activity "Converting Videos" -Status "$(++$i / $inputs.Length)% $($input.Name)" -PercentComplete $($i / $inputs.Length)
  $output = Join-Path "..\compressed" ($_  | Resolve-Path -Relative)
  if (Test-Path $output) {
    echo "already exists: $output"
  } else {
    mkdir ($output | Split-Path)
    ffmpeg -hide_banner -i $input -movflags faststart -r 25 -vf scale=-1:720 -tune stillimage $output
  }
}