gistfile1.rb

require 'pry'
umgi_dir = "/Volumes/OS/interlaced"
files = Dir.glob("#{umgi_dir}/**/*.mp4")
files.each do |f|
  result = [f]
  ffmpeg_command = "ffmpeg -filter:v idet -frames:v 500 -an -f rawvideo -y /dev/null -i #{f} 2>&1 | awk -F 'detection: ' '/detection/ { print $2 }'"
  ffmpeg_result = `#{ffmpeg_command}`
  if ffmpeg_result
    result_lines = ffmpeg_result.split("\n")
    result_lines.each do |l| 
      result.concat(l.split(" ").map { |r| r.split(":").last })
    end
    interlaced = 0
    interlaced = 1 if result[1].to_i + result[2].to_i + result[5].to_i + result[6].to_i > 60
    result.concat([interlaced])
    puts result.join("\t")
  end
end