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from __future__ import unicode_literals
import re
from .common import InfoExtractor
from ..utils import (
find_xpath_attr,
int_or_none,
parse_duration,
unified_strdate,
)
class VideoLecturesNetIE(InfoExtractor):
_VALID_URL = r'http://(?:www\.)?videolectures\.net/(?P<id>[^/#?]+)/'
IE_NAME = 'videolectures.net'
_TEST = {
'url': 'http://videolectures.net/promogram_igor_mekjavic_eng/',
'info_dict': {
'id': 'promogram_igor_mekjavic_eng',
'ext': 'mp4',
'title': 'Automatics, robotics and biocybernetics',
'description': 'md5:815fc1deb6b3a2bff99de2d5325be482',
'upload_date': '20130627',
'duration': 565,
'thumbnail': 're:http://.*\.jpg',
},
}
def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url)
video_id = mobj.group('id')
smil_url = 'http://videolectures.net/%s/video/1/smil.xml' % video_id
smil = self._download_xml(smil_url, video_id)
title = find_xpath_attr(smil, './/meta', 'name', 'title').attrib['content']
description_el = find_xpath_attr(smil, './/meta', 'name', 'abstract')
description = (
None if description_el is None
else description_el.attrib['content'])
upload_date = unified_strdate(
find_xpath_attr(smil, './/meta', 'name', 'date').attrib['content'])
switch = smil.find('.//switch')
duration = parse_duration(switch.attrib.get('dur'))
thumbnail_el = find_xpath_attr(switch, './image', 'type', 'thumbnail')
thumbnail = (
None if thumbnail_el is None else thumbnail_el.attrib.get('src'))
formats = []
for v in switch.findall('./video'):
proto = v.attrib.get('proto')
if not proto in ['http', 'rtmp']:
continue
f = {
'width': int_or_none(v.attrib.get('width')),
'height': int_or_none(v.attrib.get('height')),
'filesize': int_or_none(v.attrib.get('size')),
'tbr': int_or_none(v.attrib.get('systemBitrate')) / 1000.0,
'ext': v.attrib.get('ext'),
}
src = v.attrib['src']
if proto == 'http':
if self._is_valid_url(src, video_id):
f['url'] = src
formats.append(f)
elif proto == 'rtmp':
f.update({
'url': v.attrib['streamer'],
'play_path': src,
})
formats.append(f)
self._sort_formats(formats)
return {
'id': video_id,
'title': title,
'description': description,
'upload_date': upload_date,
'duration': duration,
'thumbnail': thumbnail,
'formats': formats,
}
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