class MediaFormatException < StandardError
end


command_mencoder = "/usr/bin/mencoder /home/download/medien_trailer.mov -o /home/robin/download/output.avi -oac lavc -ovc lavc -lavcopts vcodec=xvid:acodec=mp3"
command_ffmpeg = "/usr/bin/ffmpeg -y -i /home/download/medien_trailer.mov -vcodec xvid -acodec mp3 -ab 96 /home/robin/download/output.avi 2>&1"

begin
  execute_mencoder(command_mencoder)
  execute_ffmpeg(command_ffmpeg)
rescue
  print "ERROR\n"
  exit 1
end

def execute_mencoder(command)
  progress = nil
  Open3.popen3(command) do |pipe|
    pipe.each("\r") do |line|
      if line =~ /Pos:[^(]*(\s*(\d+)%)/
        p = $1.to_i
        p = 100 if p > 100
        if progress != p
          progress = p
          print "PROGRESS: #{progress}\n"
          $defout.flush
        end
      end
    end
  end
  raise MediaFormatException if $?.exitstatus != 0
end

def execute_ffmpeg(command)
  progress = nil
  Open3.popen3(command) do |pipe|
    pipe.each("\r") do |line|
      if line =~ /Duration: (\d{2}):(\d{2}):(\d{2}).(\d{1})/
        duration = (($1.to_i * 60 + $2.to_i) * 60 + $3.to_i) * 10 + $4.to_i
      end
      if line =~ /time=(\d+).(\d+)/
        if not duration.nil? and duration != 0
          p = ($1.to_i * 10 + $2.to_i) * 100 / duration
        else
          p = 0
        end
        p = 100 if p > 100
        if progress != p
          progress = p
          print "PROGRESS: #{progress}\n"
          $defout.flush
        end
      end
    end
  end
  raise MediaFormatException if $?.exitstatus != 0
end