- _VALID_URL = r'^(?:https?://)?openclassroom.stanford.edu(?P<path>/?|(/MainFolder/(?:HomePage|CoursePage|VideoPage)\.php([?]course=(?P<course>[^&]+)(&video=(?P<video>[^&]+))?(&.*)?)?))$'
- IE_NAME = u'stanfordoc'
-
- def _real_extract(self, url):
- mobj = re.match(self._VALID_URL, url)
- if mobj is None:
- raise ExtractorError(u'Invalid URL: %s' % url)
-
- if mobj.group('course') and mobj.group('video'): # A specific video
- course = mobj.group('course')
- video = mobj.group('video')
- info = {
- 'id': course + '_' + video,
- 'uploader': None,
- 'upload_date': None,
- }
-
- self.report_extraction(info['id'])
- baseUrl = 'http://openclassroom.stanford.edu/MainFolder/courses/' + course + '/videos/'
- xmlUrl = baseUrl + video + '.xml'
- try:
- metaXml = compat_urllib_request.urlopen(xmlUrl).read()
- except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
- raise ExtractorError(u'Unable to download video info XML: %s' % compat_str(err))
- mdoc = xml.etree.ElementTree.fromstring(metaXml)
- try:
- info['title'] = mdoc.findall('./title')[0].text
- info['url'] = baseUrl + mdoc.findall('./videoFile')[0].text
- except IndexError:
- raise ExtractorError(u'Invalid metadata XML file')
- info['ext'] = info['url'].rpartition('.')[2]
- return [info]
- elif mobj.group('course'): # A course page
- course = mobj.group('course')
- info = {
- 'id': course,
- 'type': 'playlist',
- 'uploader': None,
- 'upload_date': None,
- }
-
- coursepage = self._download_webpage(url, info['id'],
- note='Downloading course info page',
- errnote='Unable to download course info page')
-
- info['title'] = self._html_search_regex('<h1>([^<]+)</h1>', coursepage, 'title', default=info['id'])
-
- info['description'] = self._html_search_regex('<description>([^<]+)</description>',
- coursepage, u'description', fatal=False)
-
- links = orderedSet(re.findall('<a href="(VideoPage.php\?[^"]+)">', coursepage))
- info['list'] = [
- {
- 'type': 'reference',
- 'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(vpage),
- }
- for vpage in links]
- results = []
- for entry in info['list']:
- assert entry['type'] == 'reference'
- results += self.extract(entry['url'])
- return results
- else: # Root page
- info = {
- 'id': 'Stanford OpenClassroom',
- 'type': 'playlist',
- 'uploader': None,
- 'upload_date': None,
- }
-
- self.report_download_webpage(info['id'])
- rootURL = 'http://openclassroom.stanford.edu/MainFolder/HomePage.php'
- try:
- rootpage = compat_urllib_request.urlopen(rootURL).read()
- except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
- raise ExtractorError(u'Unable to download course info page: ' + compat_str(err))
-
- info['title'] = info['id']
-
- links = orderedSet(re.findall('<a href="(CoursePage.php\?[^"]+)">', rootpage))
- info['list'] = [
- {
- 'type': 'reference',
- 'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(cpage),
- }
- for cpage in links]
-
- results = []
- for entry in info['list']:
- assert entry['type'] == 'reference'
- results += self.extract(entry['url'])
- return results
-
-class MTVIE(InfoExtractor):
- """Information extractor for MTV.com"""
-
- _VALID_URL = r'^(?P<proto>https?://)?(?:www\.)?mtv\.com/videos/[^/]+/(?P<videoid>[0-9]+)/[^/]+$'
- IE_NAME = u'mtv'
-
- def _real_extract(self, url):
- mobj = re.match(self._VALID_URL, url)
- if mobj is None:
- raise ExtractorError(u'Invalid URL: %s' % url)
- if not mobj.group('proto'):
- url = 'http://' + url
- video_id = mobj.group('videoid')
-
- webpage = self._download_webpage(url, video_id)
-
- song_name = self._html_search_regex(r'<meta name="mtv_vt" content="([^"]+)"/>',
- webpage, u'song name', fatal=False)
-
- video_title = self._html_search_regex(r'<meta name="mtv_an" content="([^"]+)"/>',
- webpage, u'title')
-
- mtvn_uri = self._html_search_regex(r'<meta name="mtvn_uri" content="([^"]+)"/>',
- webpage, u'mtvn_uri', fatal=False)
-
- content_id = self._search_regex(r'MTVN.Player.defaultPlaylistId = ([0-9]+);',
- webpage, u'content id', fatal=False)
-
- videogen_url = 'http://www.mtv.com/player/includes/mediaGen.jhtml?uri=' + mtvn_uri + '&id=' + content_id + '&vid=' + video_id + '&ref=www.mtvn.com&viewUri=' + mtvn_uri
- self.report_extraction(video_id)
- request = compat_urllib_request.Request(videogen_url)
- try:
- metadataXml = compat_urllib_request.urlopen(request).read()
- except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
- raise ExtractorError(u'Unable to download video metadata: %s' % compat_str(err))
-
- mdoc = xml.etree.ElementTree.fromstring(metadataXml)
- renditions = mdoc.findall('.//rendition')
-
- # For now, always pick the highest quality.
- rendition = renditions[-1]
-
- try:
- _,_,ext = rendition.attrib['type'].partition('/')
- format = ext + '-' + rendition.attrib['width'] + 'x' + rendition.attrib['height'] + '_' + rendition.attrib['bitrate']
- video_url = rendition.find('./src').text
- except KeyError:
- raise ExtractorError('Invalid rendition field.')
-
- info = {
- 'id': video_id,
- 'url': video_url,
- 'uploader': performer,
- 'upload_date': None,
- 'title': video_title,
- 'ext': ext,
- 'format': format,
- }
-
- return [info]