Converts TXT (MicroDVD, MPL2) subtitles to SRT (SubRip) format

pasTxtToSrt.py

#!/usr/bin/python

import sys, getopt, math

FORMAT_MICRO_DVD = "}"
FORMAT_MPL2 = "]"

def addZero(ts):
   if len(ts) < 2:
      ts = '0' + ts
   return ts

def secondsToTimeformat(s):
   output = '';
   h = int(math.floor(s / 3600))
   s -= h * 3600
   output += addZero(str(h)) + ":"

   m = int(math.floor(s / 60))
   s -= m * 60
   output += addZero(str(m)) + ":"
   
   ss = int(math.floor(s))
   s -= ss

   output += addZero(str(ss)) + ',' + str(s)[2:5]

   return output


def main(argv):

   fps = 23.976
   if  len(argv) == 0:
      print "pasTxtSrt.py <input_file> <optional_fps>"
      print "default fps is " + str(fps)
      return

   inputfile = argv[0]

   
   if len(argv) > 1:
      fps = float(argv[1])

   print 'input file: ' + inputfile
   print 'fps: ' + str(fps)
   fileContent = open( inputfile, "r" )

   format = ''
   srtOutput = ''
   l = 0;
   intro = 1
   for line in fileContent:

      if len(line) < 7: continue

      if len(format) == 0:
         if line[0] == '{': format = FORMAT_MICRO_DVD     #MicroDVD
         elif line[0] == '[': format = FORMAT_MPL2        #MPL2

      l += 1
      timeBeginSIndex = 1
      timeBeginEIndex = line.find(format)
      timeEndSIndex = timeBeginEIndex + 2
      timeEndEIndex = line.find(format, timeEndSIndex)

      text = line[timeEndEIndex+1:]
      text = text.replace('|','\n')
      
      frameStart = float(line[timeBeginSIndex:timeBeginEIndex])
      frameEnd = float(line[timeEndSIndex:timeEndEIndex])

      secondsStart = 0.0
      secondsEnd = 0.0
      if format == FORMAT_MICRO_DVD:
         secondsStart = frameStart / fps
         secondsEnd = frameEnd / fps
      elif format == FORMAT_MPL2:
         secondsStart = frameStart / 10
         secondsEnd = frameEnd / 10
         text = text.replace('/','<i>',len(text))

      if intro == 1:
         srtOutput += str(l) + '\n'
         srtOutput += "00:00:00,00 --> 00:00:03,00" + '\n'
         srtOutput += "TXT TO SRT\nDla Ukochanej Asi\nwww.pastez.com\n\n"
         l += 1
         intro = 0

      srtOutput += str(l) + '\n'
      srtOutput += secondsToTimeformat(secondsStart) + " --> " + secondsToTimeformat(secondsEnd) + '\n'
      srtOutput += text + '\n'

   outputFile = open(inputfile[:-3]+'srt', "w")
   outputFile.write(srtOutput)
   outputFile.close()

if __name__ == "__main__":
   main(sys.argv[1:])