Conv.py

#!/usr/bin/python

import os
import sys
import re
from decimal import *

if( len( sys.argv ) < 2 ):
	print "Usage: " + sys.argv[0] + " subtitle_file.txt [output fps] [input_fps] >subtitle_file.srt"
	sys.exit( -1 )

fi = open(sys.argv[1], 'r')

lines = fi.readlines()

getcontext().prec = 7

prefix = ""
number = 1
ifps = 25
ofps = Decimal("23.976")

if( len(sys.argv) > 2 ):
	ofps = Decimal( sys.argv[ 2 ] )

if( len(sys.argv) > 3 ):
	ifps = Decimal( sys.argv[ 3 ] )


def toSeconds( c ):
	global ofps
	fps = ofps
	c = c.strip("{}").strip("[]")
	c = Decimal(c) / fps
	ms = str( int((c % 1)*1000) )
	c = int(c)
	s = c % 60
	m = ((c-s) / 60) % 60
	h = (c - s - 60*m) / 3600
	return str(h).zfill(2) + ":" + str(m).zfill(2) + ":" + str(s).zfill(2) + "," + str(ms).zfill(3)

def convert(line):
	global ifps
	global ofps
	chunks = re.split( '({[0-9]+})', line )
	if( (len(line) > 0) and (line[0]== '[') ):
		chunks = re.split( '(\[[0-9]+\])', line )
		ofps = 10
	res = ""
	if( len( chunks ) == 5 ):
		fr = chunks[ 1 ]
		to = chunks[ 3 ]
		body = "\n".join(chunks[ 4 ].split("|"))
		res = toSeconds( fr ) + " --> " + toSeconds( to ) + "\n" + body.strip()
	else:
		s = re.match("[0-9]?[0-9]:([0-9][0-9]:){2}", line)
		if( s != None ):
			body = line[len(s.group()):]
			body = "\n".join(body.split("|"))
			s = s.group().zfill(9)
			c = int(s[0:2])*3600*ifps + int(s[3:5])*60*ifps + int(s[6:8])*ifps
			res = toSeconds( str(c) ) + " --> " + toSeconds( str(c+5*ifps) ) + "\n" + body.strip()

	return res

for line in lines:
	print prefix + str(number)
	number = number + 1
	prefix = "\n"
	oline = convert( line )
	print oline

fi.close()