[googledrive] Add support for subtitles (fixes #13619)

This commit is contained in:
Parmjit Virk 2017-08-22 11:48:59 -05:00 committed by Sergey M
parent 7b67b60773
commit 05915e379a

View file

@ -7,6 +7,8 @@
ExtractorError, ExtractorError,
int_or_none, int_or_none,
lowercase_escape, lowercase_escape,
error_to_compat_str,
update_url_query,
) )
@ -24,7 +26,14 @@ class GoogleDriveIE(InfoExtractor):
}, { }, {
# video id is longer than 28 characters # video id is longer than 28 characters
'url': 'https://drive.google.com/file/d/1ENcQ_jeCuj7y19s66_Ou9dRP4GKGsodiDQ/edit', 'url': 'https://drive.google.com/file/d/1ENcQ_jeCuj7y19s66_Ou9dRP4GKGsodiDQ/edit',
'only_matching': True, 'md5': 'c230c67252874fddd8170e3fd1a45886',
'info_dict': {
'id': '1ENcQ_jeCuj7y19s66_Ou9dRP4GKGsodiDQ',
'ext': 'mp4',
'title': 'Andreea Banica feat Smiley - Hooky Song (Official Video).mp4',
'duration': 189,
},
'only_matching': True
}] }]
_FORMATS_EXT = { _FORMATS_EXT = {
'5': 'flv', '5': 'flv',
@ -44,6 +53,13 @@ class GoogleDriveIE(InfoExtractor):
'46': 'webm', '46': 'webm',
'59': 'mp4', '59': 'mp4',
} }
_BASE_URL_CAPTIONS = 'https://drive.google.com/timedtext'
_CAPTIONS_ENTRY_TAG = {
'subtitles': 'track',
'automatic_captions': 'target',
}
_caption_formats_ext = []
_captions_by_country_xml = None
@staticmethod @staticmethod
def _extract_url(webpage): def _extract_url(webpage):
@ -53,6 +69,81 @@ def _extract_url(webpage):
if mobj: if mobj:
return 'https://drive.google.com/file/d/%s' % mobj.group('id') return 'https://drive.google.com/file/d/%s' % mobj.group('id')
def _set_captions_data(self, video_id, video_subtitles_id, hl):
try:
self._captions_by_country_xml = self._download_xml(self._BASE_URL_CAPTIONS, video_id, query={
'id': video_id,
'vid': video_subtitles_id,
'hl': hl,
'v': video_id,
'type': 'list',
'tlangs': '1',
'fmts': '1',
'vssids': '1',
})
except ExtractorError as ee:
self.report_warning('unable to download video subtitles: %s' % error_to_compat_str(ee))
if self._captions_by_country_xml is not None:
caption_available_extensions = self._captions_by_country_xml.findall('format')
for caption_extension in caption_available_extensions:
if caption_extension.attrib.get('fmt_code') and not caption_extension.attrib.get('default'):
self._caption_formats_ext.append(caption_extension.attrib['fmt_code'])
def _get_captions_by_type(self, video_id, video_subtitles_id, caption_type, caption_original_lang_code=None):
if not video_subtitles_id or not caption_type:
return None
captions = {}
for caption_entry in self._captions_by_country_xml.findall(self._CAPTIONS_ENTRY_TAG[caption_type]):
caption_lang_code = caption_entry.attrib.get('lang_code')
if not caption_lang_code:
continue
caption_format_data = []
for caption_format in self._caption_formats_ext:
query = {
'vid': video_subtitles_id,
'v': video_id,
'fmt': caption_format,
'lang': caption_lang_code if caption_original_lang_code is None else caption_original_lang_code,
'type': 'track',
'name': '',
'kind': '',
}
if caption_original_lang_code is not None:
query.update({'tlang': caption_lang_code})
caption_format_data.append({
'url': update_url_query(self._BASE_URL_CAPTIONS, query),
'ext': caption_format,
})
captions[caption_lang_code] = caption_format_data
if not captions:
self.report_warning('video doesn\'t have %s' % caption_type.replace('_', ' '))
return captions
def _get_subtitles(self, video_id, video_subtitles_id, hl):
if not video_subtitles_id or not hl:
return None
if self._captions_by_country_xml is None:
self._set_captions_data(video_id, video_subtitles_id, hl)
if self._captions_by_country_xml is None:
return None
return self._get_captions_by_type(video_id, video_subtitles_id, 'subtitles')
def _get_automatic_captions(self, video_id, video_subtitles_id, hl):
if not video_subtitles_id or not hl:
return None
if self._captions_by_country_xml is None:
self._set_captions_data(video_id, video_subtitles_id, hl)
if self._captions_by_country_xml is None:
return None
self.to_screen('%s: Looking for automatic captions' % video_id)
subtitle_original_track = self._captions_by_country_xml.find('track')
if subtitle_original_track is None:
return None
subtitle_original_lang_code = subtitle_original_track.attrib.get('lang_code')
if not subtitle_original_lang_code:
return None
return self._get_captions_by_type(video_id, video_subtitles_id, 'automatic_captions', subtitle_original_lang_code)
def _real_extract(self, url): def _real_extract(self, url):
video_id = self._match_id(url) video_id = self._match_id(url)
webpage = self._download_webpage( webpage = self._download_webpage(
@ -97,10 +188,21 @@ def _real_extract(self, url):
formats.append(f) formats.append(f)
self._sort_formats(formats) self._sort_formats(formats)
hl = self._search_regex(
r'"hl"\s*,\s*"([^"]+)', webpage, 'hl', default=None)
video_subtitles_id = None
ttsurl = self._search_regex(
r'"ttsurl"\s*,\s*"([^"]+)', webpage, 'ttsurl', default=None)
if ttsurl:
# the video Id for subtitles will be the last value in the ttsurl query string
video_subtitles_id = ttsurl.encode('utf-8').decode('unicode_escape').split('=')[-1]
return { return {
'id': video_id, 'id': video_id,
'title': title, 'title': title,
'thumbnail': self._og_search_thumbnail(webpage, default=None), 'thumbnail': self._og_search_thumbnail(webpage, default=None),
'duration': duration, 'duration': duration,
'formats': formats, 'formats': formats,
'subtitles': self.extract_subtitles(video_id, video_subtitles_id, hl),
'automatic_captions': self.extract_automatic_captions(video_id, video_subtitles_id, hl),
} }