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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 bitrate = xpath_text(a_format, 'bitrate')
62 tbr = int_or_none(bitrate)
63 vbr = int_or_none(self._search_regex(
64 r'-(\d+)\.mp4', video_path, 'vbr', default=None))
65 abr = tbr - vbr if tbr and vbr else None
66 video_formats.append({
67 'format_id': bitrate,
68 'url': url,
69 'tbr': tbr,
70 'vbr': vbr,
71 'abr': abr,
72 })
73 return video_formats
74
75 def _parse_flv(self, metadata):
76 formats = []
77 akamai_url = xpath_text(metadata, './akamaiHost', fatal=True)
78 audios = metadata.findall('./audios/audio')
79 for audio in audios:
80 formats.append({
81 'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
82 'play_path': remove_end(audio.get('url'), '.flv'),
83 'ext': 'flv',
84 'vcodec': 'none',
85 'format_id': audio.get('code'),
86 })
87 slide_video_path = xpath_text(metadata, './slideVideo', fatal=True)
88 formats.append({
89 'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
90 'play_path': remove_end(slide_video_path, '.flv'),
91 'ext': 'flv',
92 'format_note': 'slide deck video',
93 'quality': -2,
94 'preference': -2,
95 'format_id': 'slides',
96 })
97 speaker_video_path = xpath_text(metadata, './speakerVideo', fatal=True)
98 formats.append({
99 'url': 'rtmp://%s/ondemand?ovpfv=1.1' % akamai_url,
100 'play_path': remove_end(speaker_video_path, '.flv'),
101 'ext': 'flv',
102 'format_note': 'speaker video',
103 'quality': -1,
104 'preference': -1,
105 'format_id': 'speaker',
106 })
107 return formats
108
109 def _real_extract(self, url):
110 video_id = self._match_id(url)
111
112 xml_description = self._download_xml(url, video_id)
113 metadata = xpath_element(xml_description, 'metadata')
114
115 video_formats = self._parse_mp4(metadata)
116 if video_formats is None:
117 video_formats = self._parse_flv(metadata)
118
119 return {
120 'id': video_id,
121 'formats': video_formats,
122 'title': xpath_text(metadata, 'title', fatal=True),
123 'duration': parse_duration(xpath_text(metadata, 'endTime')),
124 'creator': xpath_text(metadata, 'speaker'),
125 }