Advice required for first crystal app

converter.cr

# Recorded OTA Conversion App

files = [] of String
Dir.cd "/mnt/MediaArchive/TV-Optimized/"
directory = Dir.glob("**/*")
directory.each do |file|
  # TODO, filter files listed to a new array for things that need converting
  files << file if /\.ts$/ =~ file
  
end

# TODO make each file convert using ffmpeg, but plan for killing ffmpeg if it's been running for over an hour \
# TODO possibly spawn this into a new thread

files.each do |file|
  io = IO::Memory.new
  args = [] of String
  args << "-n -i #{file} -metadata title=\"\" -vf scale=-1:720 -c:v libx264 -preset fast -c:a:0 libfaac -b:a:1 128k -c:a:1 copy -movflags +faststart #{file}.mp4"
  test = Process.run "ffmpeg",  args, output: io
  puts io
end