]> git.bitcoin.ninja Git - youtube-dl/blob - youtube_dl/extractor/ted.py
[README.md] Make download URLs consistent
[youtube-dl] / youtube_dl / extractor / ted.py
1 from __future__ import unicode_literals
2
3 import json
4 import re
5
6 from .common import InfoExtractor
7
8 from ..compat import compat_str
9 from ..utils import int_or_none
10
11
12 class TEDIE(InfoExtractor):
13     IE_NAME = 'ted'
14     _VALID_URL = r'''(?x)
15         (?P<proto>https?://)
16         (?P<type>www|embed(?:-ssl)?)(?P<urlmain>\.ted\.com/
17         (
18             (?P<type_playlist>playlists(?:/\d+)?) # We have a playlist
19             |
20             ((?P<type_talk>talks)) # We have a simple talk
21             |
22             (?P<type_watch>watch)/[^/]+/[^/]+
23         )
24         (/lang/(.*?))? # The url may contain the language
25         /(?P<name>[\w-]+) # Here goes the name and then ".html"
26         .*)$
27         '''
28     _TESTS = [{
29         'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
30         'md5': '0de43ac406aa3e4ea74b66c9c7789b13',
31         'info_dict': {
32             'id': '102',
33             'ext': 'mp4',
34             'title': 'The illusion of consciousness',
35             'description': ('Philosopher Dan Dennett makes a compelling '
36                             'argument that not only don\'t we understand our own '
37                             'consciousness, but that half the time our brains are '
38                             'actively fooling us.'),
39             'uploader': 'Dan Dennett',
40             'width': 853,
41             'duration': 1308,
42         }
43     }, {
44         'url': 'http://www.ted.com/watch/ted-institute/ted-bcg/vishal-sikka-the-beauty-and-power-of-algorithms',
45         'md5': 'b899ac15e345fb39534d913f7606082b',
46         'info_dict': {
47             'id': 'tSVI8ta_P4w',
48             'ext': 'mp4',
49             'title': 'Vishal Sikka: The beauty and power of algorithms',
50             'thumbnail': 're:^https?://.+\.jpg',
51             'description': 'md5:6261fdfe3e02f4f579cbbfc00aff73f4',
52             'upload_date': '20140122',
53             'uploader_id': 'TEDInstitute',
54             'uploader': 'TED Institute',
55         },
56         'add_ie': ['Youtube'],
57     }, {
58         'url': 'http://www.ted.com/talks/gabby_giffords_and_mark_kelly_be_passionate_be_courageous_be_your_best',
59         'md5': '71b3ab2f4233012dce09d515c9c39ce2',
60         'info_dict': {
61             'id': '1972',
62             'ext': 'mp4',
63             'title': 'Be passionate. Be courageous. Be your best.',
64             'uploader': 'Gabby Giffords and Mark Kelly',
65             'description': 'md5:5174aed4d0f16021b704120360f72b92',
66             'duration': 1128,
67         },
68     }, {
69         'url': 'http://www.ted.com/playlists/who_are_the_hackers',
70         'info_dict': {
71             'id': '10',
72             'title': 'Who are the hackers?',
73         },
74         'playlist_mincount': 6,
75     }, {
76         # contains a youtube video
77         'url': 'https://www.ted.com/talks/douglas_adams_parrots_the_universe_and_everything',
78         'add_ie': ['Youtube'],
79         'info_dict': {
80             'id': '_ZG8HBuDjgc',
81             'ext': 'webm',
82             'title': 'Douglas Adams: Parrots the Universe and Everything',
83             'description': 'md5:01ad1e199c49ac640cb1196c0e9016af',
84             'uploader': 'University of California Television (UCTV)',
85             'uploader_id': 'UCtelevision',
86             'upload_date': '20080522',
87         },
88         'params': {
89             'skip_download': True,
90         },
91     }, {
92         # YouTube video
93         'url': 'http://www.ted.com/talks/jeffrey_kluger_the_sibling_bond',
94         'add_ie': ['Youtube'],
95         'info_dict': {
96             'id': 'aFBIPO-P7LM',
97             'ext': 'mp4',
98             'title': 'The hidden power of siblings: Jeff Kluger at TEDxAsheville',
99             'description': 'md5:3d7a4f50d95ca5dd67104e2a20f43fe1',
100             'uploader': 'TEDx Talks',
101             'uploader_id': 'TEDxTalks',
102             'upload_date': '20111216',
103         },
104         'params': {
105             'skip_download': True,
106         },
107     }]
108
109     _NATIVE_FORMATS = {
110         'low': {'width': 320, 'height': 180},
111         'medium': {'width': 512, 'height': 288},
112         'high': {'width': 854, 'height': 480},
113     }
114
115     def _extract_info(self, webpage):
116         info_json = self._search_regex(r'q\("\w+.init",({.+})\)</script>',
117                                        webpage, 'info json')
118         return json.loads(info_json)
119
120     def _real_extract(self, url):
121         m = re.match(self._VALID_URL, url, re.VERBOSE)
122         if m.group('type').startswith('embed'):
123             desktop_url = m.group('proto') + 'www' + m.group('urlmain')
124             return self.url_result(desktop_url, 'TED')
125         name = m.group('name')
126         if m.group('type_talk'):
127             return self._talk_info(url, name)
128         elif m.group('type_watch'):
129             return self._watch_info(url, name)
130         else:
131             return self._playlist_videos_info(url, name)
132
133     def _playlist_videos_info(self, url, name):
134         '''Returns the videos of the playlist'''
135
136         webpage = self._download_webpage(url, name,
137                                          'Downloading playlist webpage')
138         info = self._extract_info(webpage)
139         playlist_info = info['playlist']
140
141         playlist_entries = [
142             self.url_result('http://www.ted.com/talks/' + talk['slug'], self.ie_key())
143             for talk in info['talks']
144         ]
145         return self.playlist_result(
146             playlist_entries,
147             playlist_id=compat_str(playlist_info['id']),
148             playlist_title=playlist_info['title'])
149
150     def _talk_info(self, url, video_name):
151         webpage = self._download_webpage(url, video_name)
152         self.report_extraction(video_name)
153
154         talk_info = self._extract_info(webpage)['talks'][0]
155
156         external = talk_info.get('external')
157         if external:
158             service = external['service']
159             self.to_screen('Found video from %s' % service)
160             ext_url = None
161             if service.lower() == 'youtube':
162                 ext_url = external.get('code')
163             return {
164                 '_type': 'url',
165                 'url': ext_url or external['uri'],
166             }
167
168         formats = [{
169             'url': format_url,
170             'format_id': format_id,
171             'format': format_id,
172         } for (format_id, format_url) in talk_info['nativeDownloads'].items() if format_url is not None]
173         if formats:
174             for f in formats:
175                 finfo = self._NATIVE_FORMATS.get(f['format_id'])
176                 if finfo:
177                     f.update(finfo)
178
179         http_url = None
180         for format_id, resources in talk_info['resources'].items():
181             if format_id == 'h264':
182                 for resource in resources:
183                     h264_url = resource.get('file')
184                     if not h264_url:
185                         continue
186                     bitrate = int_or_none(resource.get('bitrate'))
187                     formats.append({
188                         'url': h264_url,
189                         'format_id': '%s-%sk' % (format_id, bitrate),
190                         'tbr': bitrate,
191                     })
192                     if re.search('\d+k', h264_url):
193                         http_url = h264_url
194             elif format_id == 'rtmp':
195                 streamer = talk_info.get('streamer')
196                 if not streamer:
197                     continue
198                 for resource in resources:
199                     formats.append({
200                         'format_id': '%s-%s' % (format_id, resource.get('name')),
201                         'url': streamer,
202                         'play_path': resource['file'],
203                         'ext': 'flv',
204                         'width': int_or_none(resource.get('width')),
205                         'height': int_or_none(resource.get('height')),
206                         'tbr': int_or_none(resource.get('bitrate')),
207                     })
208             elif format_id == 'hls':
209                 formats.extend(self._extract_m3u8_formats(
210                     resources.get('stream'), video_name, 'mp4', m3u8_id=format_id, fatal=False))
211
212         m3u8_formats = list(filter(
213             lambda f: f.get('protocol') == 'm3u8' and f.get('vcodec') != 'none' and f.get('resolution') != 'multiple',
214             formats))
215         if http_url:
216             for m3u8_format in m3u8_formats:
217                 bitrate = self._search_regex(r'(\d+k)', m3u8_format['url'], 'bitrate', default=None)
218                 if not bitrate:
219                     continue
220                 f = m3u8_format.copy()
221                 f.update({
222                     'url': re.sub(r'\d+k', bitrate, http_url),
223                     'format_id': m3u8_format['format_id'].replace('hls', 'http'),
224                     'protocol': 'http',
225                 })
226                 formats.append(f)
227
228         audio_download = talk_info.get('audioDownload')
229         if audio_download:
230             formats.append({
231                 'url': audio_download,
232                 'format_id': 'audio',
233                 'vcodec': 'none',
234             })
235
236         self._sort_formats(formats)
237
238         video_id = compat_str(talk_info['id'])
239
240         thumbnail = talk_info['thumb']
241         if not thumbnail.startswith('http'):
242             thumbnail = 'http://' + thumbnail
243         return {
244             'id': video_id,
245             'title': talk_info['title'].strip(),
246             'uploader': talk_info['speaker'],
247             'thumbnail': thumbnail,
248             'description': self._og_search_description(webpage),
249             'subtitles': self._get_subtitles(video_id, talk_info),
250             'formats': formats,
251             'duration': talk_info.get('duration'),
252         }
253
254     def _get_subtitles(self, video_id, talk_info):
255         languages = [lang['languageCode'] for lang in talk_info.get('languages', [])]
256         if languages:
257             sub_lang_list = {}
258             for l in languages:
259                 sub_lang_list[l] = [
260                     {
261                         'url': 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/%s' % (video_id, l, ext),
262                         'ext': ext,
263                     }
264                     for ext in ['ted', 'srt']
265                 ]
266             return sub_lang_list
267         else:
268             return {}
269
270     def _watch_info(self, url, name):
271         webpage = self._download_webpage(url, name)
272
273         config_json = self._html_search_regex(
274             r'"pages\.jwplayer"\s*,\s*({.+?})\s*\)\s*</script>',
275             webpage, 'config', default=None)
276         if not config_json:
277             embed_url = self._search_regex(
278                 r"<iframe[^>]+class='pages-video-embed__video__object'[^>]+src='([^']+)'", webpage, 'embed url')
279             return self.url_result(self._proto_relative_url(embed_url))
280         config = json.loads(config_json)['config']
281         video_url = config['video']['url']
282         thumbnail = config.get('image', {}).get('url')
283
284         title = self._html_search_regex(
285             r"(?s)<h1(?:\s+class='[^']+')?>(.+?)</h1>", webpage, 'title')
286         description = self._html_search_regex(
287             [
288                 r'(?s)<h4 class="[^"]+" id="h3--about-this-talk">.*?</h4>(.*?)</div>',
289                 r'(?s)<p><strong>About this talk:</strong>\s+(.*?)</p>',
290             ],
291             webpage, 'description', fatal=False)
292
293         return {
294             'id': name,
295             'url': video_url,
296             'title': title,
297             'thumbnail': thumbnail,
298             'description': description,
299         }