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1 | from __future__ import unicode_literals | |
2 | ||
3 | from .common import InfoExtractor | |
4 | from ..utils import ( | |
5 | find_xpath_attr, | |
6 | int_or_none, | |
7 | js_to_json, | |
8 | unescapeHTML, | |
9 | determine_ext, | |
10 | ) | |
11 | ||
12 | ||
13 | class HowStuffWorksIE(InfoExtractor): | |
14 | _VALID_URL = r'https?://[\da-z-]+\.howstuffworks\.com/(?:[^/]+/)*(?:\d+-)?(?P<id>.+?)-video\.htm' | |
15 | _TESTS = [ | |
16 | { | |
17 | 'url': 'http://adventure.howstuffworks.com/5266-cool-jobs-iditarod-musher-video.htm', | |
18 | 'info_dict': { | |
19 | 'id': '450221', | |
20 | 'ext': 'flv', | |
21 | 'title': 'Cool Jobs - Iditarod Musher', | |
22 | 'description': 'Cold sleds, freezing temps and warm dog breath... an Iditarod musher\'s dream. Kasey-Dee Gardner jumps on a sled to find out what the big deal is.', | |
23 | 'display_id': 'cool-jobs-iditarod-musher', | |
24 | 'thumbnail': r're:^https?://.*\.jpg$', | |
25 | 'duration': 161, | |
26 | }, | |
27 | 'skip': 'Video broken', | |
28 | }, | |
29 | { | |
30 | 'url': 'http://adventure.howstuffworks.com/7199-survival-zone-food-and-water-in-the-savanna-video.htm', | |
31 | 'info_dict': { | |
32 | 'id': '453464', | |
33 | 'ext': 'mp4', | |
34 | 'title': 'Survival Zone: Food and Water In the Savanna', | |
35 | 'description': 'Learn how to find both food and water while trekking in the African savannah. In this video from the Discovery Channel.', | |
36 | 'display_id': 'survival-zone-food-and-water-in-the-savanna', | |
37 | 'thumbnail': r're:^https?://.*\.jpg$', | |
38 | }, | |
39 | }, | |
40 | { | |
41 | 'url': 'http://entertainment.howstuffworks.com/arts/2706-sword-swallowing-1-by-dan-meyer-video.htm', | |
42 | 'info_dict': { | |
43 | 'id': '440011', | |
44 | 'ext': 'mp4', | |
45 | 'title': 'Sword Swallowing #1 by Dan Meyer', | |
46 | 'description': 'Video footage (1 of 3) used by permission of the owner Dan Meyer through Sword Swallowers Association International <www.swordswallow.org>', | |
47 | 'display_id': 'sword-swallowing-1-by-dan-meyer', | |
48 | 'thumbnail': r're:^https?://.*\.jpg$', | |
49 | }, | |
50 | }, | |
51 | { | |
52 | 'url': 'http://shows.howstuffworks.com/stuff-to-blow-your-mind/optical-illusions-video.htm', | |
53 | 'only_matching': True, | |
54 | } | |
55 | ] | |
56 | ||
57 | def _real_extract(self, url): | |
58 | display_id = self._match_id(url) | |
59 | webpage = self._download_webpage(url, display_id) | |
60 | clip_js = self._search_regex( | |
61 | r'(?s)var clip = ({.*?});', webpage, 'clip info') | |
62 | clip_info = self._parse_json( | |
63 | clip_js, display_id, transform_source=js_to_json) | |
64 | ||
65 | video_id = clip_info['content_id'] | |
66 | formats = [] | |
67 | m3u8_url = clip_info.get('m3u8') | |
68 | if m3u8_url and determine_ext(m3u8_url) == 'm3u8': | |
69 | formats.extend(self._extract_m3u8_formats(m3u8_url, video_id, 'mp4', format_id='hls', fatal=True)) | |
70 | flv_url = clip_info.get('flv_url') | |
71 | if flv_url: | |
72 | formats.append({ | |
73 | 'url': flv_url, | |
74 | 'format_id': 'flv', | |
75 | }) | |
76 | for video in clip_info.get('mp4', []): | |
77 | formats.append({ | |
78 | 'url': video['src'], | |
79 | 'format_id': 'mp4-%s' % video['bitrate'], | |
80 | 'vbr': int_or_none(video['bitrate'].rstrip('k')), | |
81 | }) | |
82 | ||
83 | if not formats: | |
84 | smil = self._download_xml( | |
85 | 'http://services.media.howstuffworks.com/videos/%s/smil-service.smil' % video_id, | |
86 | video_id, 'Downloading video SMIL') | |
87 | ||
88 | http_base = find_xpath_attr( | |
89 | smil, | |
90 | './{0}head/{0}meta'.format('{http://www.w3.org/2001/SMIL20/Language}'), | |
91 | 'name', | |
92 | 'httpBase').get('content') | |
93 | ||
94 | URL_SUFFIX = '?v=2.11.3&fp=LNX 11,2,202,356&r=A&g=A' | |
95 | ||
96 | for video in smil.findall( | |
97 | './{0}body/{0}switch/{0}video'.format('{http://www.w3.org/2001/SMIL20/Language}')): | |
98 | vbr = int_or_none(video.attrib['system-bitrate'], scale=1000) | |
99 | formats.append({ | |
100 | 'url': '%s/%s%s' % (http_base, video.attrib['src'], URL_SUFFIX), | |
101 | 'format_id': '%dk' % vbr, | |
102 | 'vbr': vbr, | |
103 | }) | |
104 | ||
105 | self._sort_formats(formats) | |
106 | ||
107 | return { | |
108 | 'id': '%s' % video_id, | |
109 | 'display_id': display_id, | |
110 | 'title': unescapeHTML(clip_info['clip_title']), | |
111 | 'description': unescapeHTML(clip_info.get('caption')), | |
112 | 'thumbnail': clip_info.get('video_still_url'), | |
113 | 'duration': int_or_none(clip_info.get('duration')), | |
114 | 'formats': formats, | |
115 | } |