README.md

Usage

python convert2srt.py source_filename > output_filename

convert2srt.py

import sys
import re

def err(msg):
	sys.stderr.write(msg)
	sys.stderr.flush()

def out(msg):
	sys.stdout.write(msg + '\n')
	sys.stdout.flush()


def convert(filename):
	# load source txt file
	lines = []
	with open(filename) as f:
		lines = [txt.strip('\n') for txt in f.readlines()]

	subs = []
	for line in lines:
		# split time & subtitle
		sub = re.split('\t', line, 1)
		if len(sub) > 1:
			# convert time format
			sub[0] = re.findall('^([0-9]{2}:[0-9]{2}:[0-9]{2})', sub[0])[0] + ',' + str(int(re.findall(':([0-9]{2})$', sub[0])[0]) * 1000 / 60)
			# replace useless escape character
			sub[1] = re.sub('\t', ' ', sub[1])
			sub[1] = re.sub('[\r\n]', '', sub[1])

			subs.append(sub)

	# write as srt format to stdout
	for subIndex in xrange(0, len(subs) - 1):
		# wirte index
		out(str(subIndex))
		# write time
		out(subs[subIndex][0] + ' --> ' + subs[subIndex + 1][0])
		# write subtitle content
		out(subs[subIndex][1])
		out('')


if __name__ == '__main__':
	if len(sys.argv) < 2:
		err("You must give source filename")
	else:
		for filename in sys.argv[1:]:
			convert(filename)