convert flash to mp4

require 'net/ftp'

load 'aws.rb'

def execute_ffmpeg(command)
  progress = nil
  IO.popen(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

until QUEUE.size == 0
  input_file = QUEUE.pop
  output_file = input_file.gsub(/flv/, "mp4")
  # get the original from the chrome FTP
  ftp = Net::FTP.new('')
  ftp.login(user = '', passwd = '')
  files = ftp.chdir('')
  ftp.getbinaryfile(file, '/tmp/' + input_file, 1024)
  ftp.close
  # convert the video
  command = "ffmpeg -i /tmp/#{input_file} -acodec libfaac -ab 96k -ac 2 -vcodec libx264 -vpre slow -vpre ipod640 -crf 26 -threads 0 /tmp/#{output_file} 2>&1"
  execute_ffmpeg(command)
  # upload the converted video to S3
  relative_video_path = '/video/' + output_file
  begin
    # check to see if the video already exists on S3
    AWS::S3::S3Object.find relative_video_path, 'myauto.evox'
  rescue AWS::S3::NoSuchKey
    # if the video doesn't exist on S3, upload it
    AWS::S3::S3Object.store(relative_video_path, open('/tmp/' + output_file), 'myauto.evox')
    puts "Uploaded '#{relative_video_path}' to S3."
  end
  File.delete('/tmp/' + input_file)
  puts "#{input_file} => #{output_file} => S3 :: Done!"
end