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# -*- coding: utf-8 -*-
# Copyright 2017 Laura Klünder
# See https://github.com/codingcatgirl/ttml2srt
#
# MIT License
#
# Copyright (c) 2017 Laura Klünder
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import re
import io
from datetime import timedelta
from defusedxml import ElementTree as ET
def ttml2srt( infile, outfile ):
tree = ET.parse( infile )
root = tree.getroot()
# strip namespaces
for elem in root.getiterator():
elem.tag = elem.tag.split('}', 1)[-1]
elem.attrib = {name.split('}', 1)
[-1]: value for name, value in elem.attrib.items()}
# get styles
styles = {}
for elem in root.findall('./head/styling/style'):
style = {}
if 'color' in elem.attrib:
color = elem.attrib['color']
if color not in ('#FFFFFF', '#000000'):
style['color'] = color
if 'fontStyle' in elem.attrib:
fontstyle = elem.attrib['fontStyle']
if fontstyle in ('italic', ):
style['fontstyle'] = fontstyle
styles[elem.attrib['id']] = style
body = root.find('./body')
# parse correct start and end times
def parse_time_expression(expression, default_offset=timedelta(0)):
offset_time = re.match(r'^([0-9]+(\.[0-9]+)?)(h|m|s|ms|f|t)$', expression)
if offset_time:
time_value, _, metric = offset_time.groups()
time_value = float(time_value)
if metric == 'h':
return default_offset + timedelta(hours=time_value)
elif metric == 'm':
return default_offset + timedelta(minutes=time_value)
elif metric == 's':
return default_offset + timedelta(seconds=time_value)
elif metric == 'ms':
return default_offset + timedelta(milliseconds=time_value)
elif metric == 'f':
raise NotImplementedError(
'Parsing time expressions by frame is not supported!')
elif metric == 't':
raise NotImplementedError(
'Parsing time expressions by ticks is not supported!')
clock_time = re.match(
r'^([0-9]{2,}):([0-9]{2,}):([0-9]{2,}(\.[0-9]+)?)$', expression)
if clock_time:
hours, minutes, seconds, _ = clock_time.groups()
return timedelta(hours=int(hours), minutes=int(minutes), seconds=float(seconds))
clock_time_frames = re.match(
r'^([0-9]{2,}):([0-9]{2,}):([0-9]{2,}):([0-9]{2,}(\.[0-9]+)?)$', expression)
if clock_time_frames:
raise NotImplementedError(
'Parsing time expressions by frame is not supported!')
raise ValueError('unknown time expression: %s' % expression)
def parse_times(elem, default_begin=timedelta(0)):
if 'begin' in elem.attrib:
begin = parse_time_expression(
elem.attrib['begin'], default_offset=default_begin)
else:
begin = default_begin
elem.attrib['{abs}begin'] = begin
end = None
if 'end' in elem.attrib:
end = parse_time_expression(
elem.attrib['end'], default_offset=default_begin)
dur = None
if 'dur' in elem.attrib:
dur = parse_time_expression(elem.attrib['dur'])
if dur is not None:
if end is None:
end = begin + dur
else:
end = min(end, begin + dur)
elem.attrib['{abs}end'] = end
for child in elem:
parse_times(child, default_begin=begin)
parse_times(body)
timestamps = set()
for elem in body.findall('.//*[@{abs}begin]'):
timestamps.add(elem.attrib['{abs}begin'])
for elem in body.findall('.//*[@{abs}end]'):
timestamps.add(elem.attrib['{abs}end'])
timestamps.discard(None)
# render subtitles on each timestamp
def render_subtitles(elem, timestamp, parent_style=None):
if timestamp < elem.attrib['{abs}begin']:
return ''
if elem.attrib['{abs}end'] is not None and timestamp >= elem.attrib['{abs}end']:
return ''
result = ''
style = parent_style.copy() if parent_style is not None else {}
if 'style' in elem.attrib:
style.update(styles[elem.attrib['style']])
if 'color' in style:
result += '<font color="%s">' % style['color']
if style.get('fontstyle') == 'italic':
result += '<i>'
if elem.text:
result += elem.text.strip()
if len(elem):
for child in elem:
result += render_subtitles(child, timestamp)
if child.tail:
result += child.tail.strip()
if 'color' in style:
result += '</font>'
if style.get('fontstyle') == 'italic':
result += '</i>'
if elem.tag in ('div', 'p', 'br'):
result += '\n'
return result
rendered = []
for timestamp in sorted(timestamps):
rendered.append((timestamp, re.sub(r'\n\n\n+', '\n\n',
render_subtitles(body, timestamp)).strip()))
if not rendered:
exit(0)
# group timestamps together if nothing changes
rendered_grouped = []
last_text = None
for timestamp, content in rendered:
if content != last_text:
rendered_grouped.append((timestamp, content))
last_text = content
# output srt
rendered_grouped.append((rendered_grouped[-1][0] + timedelta(hours=24), ''))
def format_timestamp(timestamp):
return ('%02d:%02d:%02.3f' % (timestamp.total_seconds() // 3600,
timestamp.total_seconds() // 60 % 60,
timestamp.total_seconds() % 60)).replace('.', ',')
if isinstance( outfile, str ) or isinstance( outfile, unicode ):
file = io.open( outfile, 'w', encoding='utf-8' )
else:
file = outfile
srt_i = 1
for i, (timestamp, content) in enumerate(rendered_grouped[:-1]):
if content == '':
continue
file.write( bytearray( '%d\n' % srt_i, 'utf-8' ) )
file.write( bytearray(
format_timestamp( timestamp ) +
' --> ' +
format_timestamp( rendered_grouped[i + 1][0] ) +
'\n'
) )
file.write( bytearray( content + '\n\n', 'utf-8' ) )
srt_i += 1
file.close()
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