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[lynda] Add subtitles extraction

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dst 2014-01-05 23:59:33 +07:00
parent 7f9886379c
commit 62bcfa8c57
1 changed files with 44 additions and 4 deletions
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48
youtube_dl/extractor/lynda.py
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@ -3,11 +3,12 @@ from __future__ import unicode_literals
import re
import json
from .subtitles import SubtitlesInfoExtractor
from .common import InfoExtractor
from ..utils import ExtractorError
class LyndaIE(InfoExtractor):
class LyndaIE(SubtitlesInfoExtractor):
IE_NAME = 'lynda'
IE_DESC = 'lynda.com videos'
_VALID_URL = r'https?://www\.lynda\.com/[^/]+/[^/]+/\d+/(\d+)-\d\.html'
@ -21,7 +22,7 @@ class LyndaIE(InfoExtractor):
'duration': 68
}
}
def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url)
video_id = mobj.group(1)
@ -45,17 +46,56 @@ class LyndaIE(InfoExtractor):
'width': fmt['Width'],
'height': fmt['Height'],
'filesize': fmt['FileSize'],
'format_id': fmt['Resolution']
'format_id': str(fmt['Resolution'])
} for fmt in video_json['Formats']]
self._sort_formats(formats)
if self._downloader.params.get('listsubtitles', False):
self._list_available_subtitles(video_id, page)
return
subtitles = self._fix_subtitles(self.extract_subtitles(video_id, page))
return {
'id': video_id,
'title': title,
'duration': duration,
'subtitles': subtitles,
'formats': formats
}
_TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]'
def _fix_subtitles(self, subtitles):
fixed_subtitles = {}
for k, v in subtitles.items():
subs = json.loads(v)
if len(subs) == 0:
continue
srt = ''
for pos in range(0, len(subs) - 1):
seq_current = subs[pos]
m_current = re.match(self._TIMECODE_REGEX, seq_current['Timecode'])
if m_current is None:
continue
seq_next = subs[pos+1]
m_next = re.match(self._TIMECODE_REGEX, seq_next['Timecode'])
if m_next is None:
continue
appear_time = m_current.group('timecode')
disappear_time = m_next.group('timecode')
text = seq_current['Caption']
srt += '%s\r\n%s --> %s\r\n%s' % (str(pos), appear_time, disappear_time, text)
if srt:
fixed_subtitles[k] = srt
return fixed_subtitles
def _get_available_subtitles(self, video_id, webpage):
url = 'http://www.lynda.com/ajax/player?videoId=%s&type=transcript' % video_id
sub = self._download_webpage(url, None, note=False)
sub_json = json.loads(sub)
return {'en': url} if len(sub_json) > 0 else {}
class LyndaCourseIE(InfoExtractor):