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[youtubedl] / youtube_dl / extractor / libraryofcongress.py
1 # coding: utf-8
2 from __future__ import unicode_literals
3
4 import re
5
6 from .common import InfoExtractor
7
8 from ..utils import (
9 determine_ext,
10 float_or_none,
11 int_or_none,
12 parse_filesize,
13 )
14
15
16 class LibraryOfCongressIE(InfoExtractor):
17 IE_NAME = 'loc'
18 IE_DESC = 'Library of Congress'
19 _VALID_URL = r'https?://(?:www\.)?loc\.gov/(?:item/|today/cyberlc/feature_wdesc\.php\?.*\brec=)(?P<id>[0-9]+)'
20 _TESTS = [{
21 # embedded via <div class="media-player"
22 'url': 'http://loc.gov/item/90716351/',
23 'md5': '353917ff7f0255aa6d4b80a034833de8',
24 'info_dict': {
25 'id': '90716351',
26 'ext': 'mp4',
27 'title': "Pa's trip to Mars",
28 'thumbnail': r're:^https?://.*\.jpg$',
29 'duration': 0,
30 'view_count': int,
31 },
32 }, {
33 # webcast embedded via mediaObjectId
34 'url': 'https://www.loc.gov/today/cyberlc/feature_wdesc.php?rec=5578',
35 'info_dict': {
36 'id': '5578',
37 'ext': 'mp4',
38 'title': 'Help! Preservation Training Needs Here, There & Everywhere',
39 'duration': 3765,
40 'view_count': int,
41 'subtitles': 'mincount:1',
42 },
43 'params': {
44 'skip_download': True,
45 },
46 }, {
47 # with direct download links
48 'url': 'https://www.loc.gov/item/78710669/',
49 'info_dict': {
50 'id': '78710669',
51 'ext': 'mp4',
52 'title': 'La vie et la passion de Jesus-Christ',
53 'duration': 0,
54 'view_count': int,
55 'formats': 'mincount:4',
56 },
57 'params': {
58 'skip_download': True,
59 },
60 }]
61
62 def _real_extract(self, url):
63 video_id = self._match_id(url)
64 webpage = self._download_webpage(url, video_id)
65
66 media_id = self._search_regex(
67 (r'id=(["\'])media-player-(?P<id>.+?)\1',
68 r'<video[^>]+id=(["\'])uuid-(?P<id>.+?)\1',
69 r'<video[^>]+data-uuid=(["\'])(?P<id>.+?)\1',
70 r'mediaObjectId\s*:\s*(["\'])(?P<id>.+?)\1'),
71 webpage, 'media id', group='id')
72
73 data = self._download_json(
74 'https://media.loc.gov/services/v1/media?id=%s&context=json' % media_id,
75 video_id)['mediaObject']
76
77 derivative = data['derivatives'][0]
78 media_url = derivative['derivativeUrl']
79
80 title = derivative.get('shortName') or data.get('shortName') or self._og_search_title(
81 webpage)
82
83 # Following algorithm was extracted from setAVSource js function
84 # found in webpage
85 media_url = media_url.replace('rtmp', 'https')
86
87 is_video = data.get('mediaType', 'v').lower() == 'v'
88 ext = determine_ext(media_url)
89 if ext not in ('mp4', 'mp3'):
90 media_url += '.mp4' if is_video else '.mp3'
91
92 if 'vod/mp4:' in media_url:
93 formats = [{
94 'url': media_url.replace('vod/mp4:', 'hls-vod/media/') + '.m3u8',
95 'format_id': 'hls',
96 'ext': 'mp4',
97 'protocol': 'm3u8_native',
98 'quality': 1,
99 }]
100 elif 'vod/mp3:' in media_url:
101 formats = [{
102 'url': media_url.replace('vod/mp3:', ''),
103 'vcodec': 'none',
104 }]
105
106 download_urls = set()
107 for m in re.finditer(
108 r'<option[^>]+value=(["\'])(?P<url>.+?)\1[^>]+data-file-download=[^>]+>\s*(?P<id>.+?)(?:(?:&nbsp;|\s+)\((?P<size>.+?)\))?\s*<', webpage):
109 format_id = m.group('id').lower()
110 if format_id == 'gif':
111 continue
112 download_url = m.group('url')
113 if download_url in download_urls:
114 continue
115 download_urls.add(download_url)
116 formats.append({
117 'url': download_url,
118 'format_id': format_id,
119 'filesize_approx': parse_filesize(m.group('size')),
120 })
121
122 self._sort_formats(formats)
123
124 duration = float_or_none(data.get('duration'))
125 view_count = int_or_none(data.get('viewCount'))
126
127 subtitles = {}
128 cc_url = data.get('ccUrl')
129 if cc_url:
130 subtitles.setdefault('en', []).append({
131 'url': cc_url,
132 'ext': 'ttml',
133 })
134
135 return {
136 'id': video_id,
137 'title': title,
138 'thumbnail': self._og_search_thumbnail(webpage, default=None),
139 'duration': duration,
140 'view_count': view_count,
141 'formats': formats,
142 'subtitles': subtitles,
143 }