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[youtube] Support automatic captions with original language different from English (fixes #1225) and download in multiple languages.

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This commit is contained in:
Jaime Marquínez Ferrándiz 2013-09-11 19:02:01 +02:00
parent ac4f319ba1
commit 055e6f3657
2 changed files with 47 additions and 41 deletions
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51
youtube_dl/extractor/subtitles.py
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@ -15,28 +15,33 @@ class SubtitlesInfoExtractor(InfoExtractor):
self.to_screen(u'%s: Available subtitles for video: %s' %
(video_id, sub_lang))
def _extract_subtitles(self, video_id):
def extract_subtitles(self, video_id, video_webpage=None):
""" returns {sub_lang: sub} or {} if subtitles not found """
available_subs_list = self._get_available_subtitles(video_id)
if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
available_subs_list = self._get_available_subtitles(video_id)
elif self._downloader.params.get('writeautomaticsub', False):
available_subs_list = self._get_available_automatic_caption(video_id, video_webpage)
else:
return None
if not available_subs_list: # error, it didn't get the available subtitles
return {}
if self._downloader.params.get('allsubtitles', False):
sub_lang_list = available_subs_list
else:
if self._downloader.params.get('writesubtitles', False):
if self._downloader.params.get('subtitleslangs', False):
requested_langs = self._downloader.params.get('subtitleslangs')
elif 'en' in available_subs_list:
requested_langs = ['en']
else:
requested_langs = [list(available_subs_list.keys())[0]]
if self._downloader.params.get('subtitleslangs', False):
requested_langs = self._downloader.params.get('subtitleslangs')
elif 'en' in available_subs_list:
requested_langs = ['en']
else:
requested_langs = [list(available_subs_list.keys())[0]]
sub_lang_list = {}
for sub_lang in requested_langs:
if not sub_lang in available_subs_list:
self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
continue
sub_lang_list[sub_lang] = available_subs_list[sub_lang]
sub_lang_list = {}
for sub_lang in requested_langs:
if not sub_lang in available_subs_list:
self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
continue
sub_lang_list[sub_lang] = available_subs_list[sub_lang]
subtitles = {}
for sub_lang, url in sub_lang_list.items():
@ -64,23 +69,11 @@ class SubtitlesInfoExtractor(InfoExtractor):
"""
pass
def _request_automatic_caption(self, video_id, webpage):
def _get_available_automatic_caption(self, video_id, webpage):
"""
returns {sub_lang: sub} or {} if not available
returns {sub_lang: url} or {} if not available
Must be redefined by the subclasses that support automatic captions,
otherwise it will return {}
"""
self._downloader.report_warning(u'Automatic Captions not supported by this server')
return {}
def extract_subtitles(self, video_id, video_webpage=None):
"""
Extract the subtitles and/or the automatic captions if requested.
Returns None or a dictionary in the format {sub_lang: sub}
"""
video_subtitles = None
if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
video_subtitles = self._extract_subtitles(video_id)
elif self._downloader.params.get('writeautomaticsub', False):
video_subtitles = self._request_automatic_caption(video_id, video_webpage)
return video_subtitles