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[youtubedl] / youtube_dl / extractor / dispeak.py
1 from __future__ import unicode_literals
2
3 import re
4
5 from .common import InfoExtractor
6 from ..utils import (
7 int_or_none,
8 parse_duration,
9 remove_end,
10 xpath_element,
11 xpath_text,
12 )
13
14
15 class DigitallySpeakingIE(InfoExtractor):
16 _VALID_URL = r'https?://(?:s?evt\.dispeak|events\.digitallyspeaking)\.com/(?:[^/]+/)+xml/(?P<id>[^.]+)\.xml'
17
18 _TESTS = [{
19 # From http://gdcvault.com/play/1023460/Tenacious-Design-and-The-Interface
20 'url': 'http://evt.dispeak.com/ubm/gdc/sf16/xml/840376_BQRC.xml',
21 'md5': 'a8efb6c31ed06ca8739294960b2dbabd',
22 'info_dict': {
23 'id': '840376_BQRC',
24 'ext': 'mp4',
25 'title': 'Tenacious Design and The Interface of \'Destiny\'',
26 },
27 }, {
28 # From http://www.gdcvault.com/play/1014631/Classic-Game-Postmortem-PAC
29 'url': 'http://events.digitallyspeaking.com/gdc/sf11/xml/12396_1299111843500GMPX.xml',
30 'only_matching': True,
31 }, {
32 # From http://www.gdcvault.com/play/1013700/Advanced-Material
33 'url': 'http://sevt.dispeak.com/ubm/gdc/eur10/xml/11256_1282118587281VNIT.xml',
34 'only_matching': True,
35 }]
36
37 def _parse_mp4(self, metadata):
38 video_formats = []
39 video_root = None
40
41 mp4_video = xpath_text(metadata, './mp4video', default=None)
42 if mp4_video is not None:
43 mobj = re.match(r'(?P<root>https?://.*?/).*', mp4_video)
44 video_root = mobj.group('root')
45 if video_root is None:
46 http_host = xpath_text(metadata, 'httpHost', default=None)
47 if http_host:
48 video_root = 'http://%s/' % http_host
49 if video_root is None:
50 # Hard-coded in http://evt.dispeak.com/ubm/gdc/sf16/custom/player2.js
51 # Works for GPUTechConf, too
52 video_root = 'http://s3-2u.digitallyspeaking.com/'
53
54 formats = metadata.findall('./MBRVideos/MBRVideo')
55 if not formats:
56 return None
57 for a_format in formats:
58 stream_name = xpath_text(a_format, 'streamName', fatal=True)
59 video_path = re.match(r'mp4\:(?P<path>.*)', stream_name).group('path')
60 url = video_root + video_path
61 vbr = xpath_text(a_format, 'bitrate')
62 video_formats.append({
63 'url': url,
64 'vbr': int_or_none(vbr),
65 })
66 return video_formats
67
68 def _parse_flv(self, metadata):
69 formats = []
70 akamai_url = xpath_text(metadata, './akamaiHost', fatal=True)
71 audios = metadata.findall('./audios/audio')
72 for audio in audios:
73 formats.append({
74 'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
75 'play_path': remove_end(audio.get('url'), '.flv'),
76 'ext': 'flv',
77 'vcodec': 'none',
78 'format_id': audio.get('code'),
79 })
80 slide_video_path = xpath_text(metadata, './slideVideo', fatal=True)
81 formats.append({
82 'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
83 'play_path': remove_end(slide_video_path, '.flv'),
84 'ext': 'flv',
85 'format_note': 'slide deck video',
86 'quality': -2,
87 'preference': -2,
88 'format_id': 'slides',
89 })
90 speaker_video_path = xpath_text(metadata, './speakerVideo', fatal=True)
91 formats.append({
92 'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
93 'play_path': remove_end(speaker_video_path, '.flv'),
94 'ext': 'flv',
95 'format_note': 'speaker video',
96 'quality': -1,
97 'preference': -1,
98 'format_id': 'speaker',
99 })
100 return formats
101
102 def _real_extract(self, url):
103 video_id = self._match_id(url)
104
105 xml_description = self._download_xml(url, video_id)
106 metadata = xpath_element(xml_description, 'metadata')
107
108 video_formats = self._parse_mp4(metadata)
109 if video_formats is None:
110 video_formats = self._parse_flv(metadata)
111
112 return {
113 'id': video_id,
114 'formats': video_formats,
115 'title': xpath_text(metadata, 'title', fatal=True),
116 'duration': parse_duration(xpath_text(metadata, 'endTime')),
117 'creator': xpath_text(metadata, 'speaker'),
118 }