]> gitweb @ CieloNegro.org - youtube-dl.git/blob - youtube_dl/extractor/ted.py
[nhk] add support for audio URLs
[youtube-dl.git] / 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 (
10     float_or_none,
11     int_or_none,
12     try_get,
13     url_or_none,
14 )
15
16
17 class TEDIE(InfoExtractor):
18     IE_NAME = 'ted'
19     _VALID_URL = r'''(?x)
20         (?P<proto>https?://)
21         (?P<type>www|embed(?:-ssl)?)(?P<urlmain>\.ted\.com/
22         (
23             (?P<type_playlist>playlists(?:/\d+)?) # We have a playlist
24             |
25             ((?P<type_talk>talks)) # We have a simple talk
26             |
27             (?P<type_watch>watch)/[^/]+/[^/]+
28         )
29         (/lang/(.*?))? # The url may contain the language
30         /(?P<name>[\w-]+) # Here goes the name and then ".html"
31         .*)$
32         '''
33     _TESTS = [{
34         'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
35         'md5': 'b0ce2b05ca215042124fbc9e3886493a',
36         'info_dict': {
37             'id': '102',
38             'ext': 'mp4',
39             'title': 'The illusion of consciousness',
40             'description': ('Philosopher Dan Dennett makes a compelling '
41                             'argument that not only don\'t we understand our own '
42                             'consciousness, but that half the time our brains are '
43                             'actively fooling us.'),
44             'uploader': 'Dan Dennett',
45             'width': 853,
46             'duration': 1308,
47             'view_count': int,
48             'comment_count': int,
49             'tags': list,
50         },
51         'params': {
52             'skip_download': True,
53         },
54     }, {
55         # missing HTTP bitrates
56         'url': 'https://www.ted.com/talks/vishal_sikka_the_beauty_and_power_of_algorithms',
57         'info_dict': {
58             'id': '6069',
59             'ext': 'mp4',
60             'title': 'The beauty and power of algorithms',
61             'thumbnail': r're:^https?://.+\.jpg',
62             'description': 'md5:734e352710fb00d840ab87ae31aaf688',
63             'uploader': 'Vishal Sikka',
64         },
65         'params': {
66             'skip_download': True,
67         },
68     }, {
69         'url': 'http://www.ted.com/talks/gabby_giffords_and_mark_kelly_be_passionate_be_courageous_be_your_best',
70         'md5': 'e6b9617c01a7970ceac8bb2c92c346c0',
71         'info_dict': {
72             'id': '1972',
73             'ext': 'mp4',
74             'title': 'Be passionate. Be courageous. Be your best.',
75             'uploader': 'Gabby Giffords and Mark Kelly',
76             'description': 'md5:5174aed4d0f16021b704120360f72b92',
77             'duration': 1128,
78         },
79         'params': {
80             'skip_download': True,
81         },
82     }, {
83         'url': 'http://www.ted.com/playlists/who_are_the_hackers',
84         'info_dict': {
85             'id': '10',
86             'title': 'Who are the hackers?',
87         },
88         'playlist_mincount': 6,
89     }, {
90         # contains a youtube video
91         'url': 'https://www.ted.com/talks/douglas_adams_parrots_the_universe_and_everything',
92         'add_ie': ['Youtube'],
93         'info_dict': {
94             'id': '_ZG8HBuDjgc',
95             'ext': 'webm',
96             'title': 'Douglas Adams: Parrots the Universe and Everything',
97             'description': 'md5:01ad1e199c49ac640cb1196c0e9016af',
98             'uploader': 'University of California Television (UCTV)',
99             'uploader_id': 'UCtelevision',
100             'upload_date': '20080522',
101         },
102         'params': {
103             'skip_download': True,
104         },
105     }, {
106         # no nativeDownloads
107         'url': 'https://www.ted.com/talks/tom_thum_the_orchestra_in_my_mouth',
108         'info_dict': {
109             'id': '1792',
110             'ext': 'mp4',
111             'title': 'The orchestra in my mouth',
112             'description': 'md5:5d1d78650e2f8dfcbb8ebee2951ac29a',
113             'uploader': 'Tom Thum',
114             'view_count': int,
115             'comment_count': int,
116             'tags': list,
117         },
118         'params': {
119             'skip_download': True,
120         },
121     }]
122
123     _NATIVE_FORMATS = {
124         'low': {'width': 320, 'height': 180},
125         'medium': {'width': 512, 'height': 288},
126         'high': {'width': 854, 'height': 480},
127     }
128
129     def _extract_info(self, webpage):
130         info_json = self._search_regex(
131             r'(?s)q\(\s*"\w+.init"\s*,\s*({.+})\)\s*</script>',
132             webpage, 'info json')
133         return json.loads(info_json)
134
135     def _real_extract(self, url):
136         m = re.match(self._VALID_URL, url, re.VERBOSE)
137         if m.group('type').startswith('embed'):
138             desktop_url = m.group('proto') + 'www' + m.group('urlmain')
139             return self.url_result(desktop_url, 'TED')
140         name = m.group('name')
141         if m.group('type_talk'):
142             return self._talk_info(url, name)
143         elif m.group('type_watch'):
144             return self._watch_info(url, name)
145         else:
146             return self._playlist_videos_info(url, name)
147
148     def _playlist_videos_info(self, url, name):
149         '''Returns the videos of the playlist'''
150
151         webpage = self._download_webpage(url, name,
152                                          'Downloading playlist webpage')
153         info = self._extract_info(webpage)
154
155         playlist_info = try_get(
156             info, lambda x: x['__INITIAL_DATA__']['playlist'],
157             dict) or info['playlist']
158
159         playlist_entries = [
160             self.url_result('http://www.ted.com/talks/' + talk['slug'], self.ie_key())
161             for talk in try_get(
162                 info, lambda x: x['__INITIAL_DATA__']['talks'],
163                 dict) or info['talks']
164         ]
165         return self.playlist_result(
166             playlist_entries,
167             playlist_id=compat_str(playlist_info['id']),
168             playlist_title=playlist_info['title'])
169
170     def _talk_info(self, url, video_name):
171         webpage = self._download_webpage(url, video_name)
172
173         info = self._extract_info(webpage)
174
175         data = try_get(info, lambda x: x['__INITIAL_DATA__'], dict) or info
176         talk_info = data['talks'][0]
177
178         title = talk_info['title'].strip()
179
180         native_downloads = try_get(
181             talk_info,
182             (lambda x: x['downloads']['nativeDownloads'],
183              lambda x: x['nativeDownloads']),
184             dict) or {}
185
186         formats = [{
187             'url': format_url,
188             'format_id': format_id,
189             'format': format_id,
190         } for (format_id, format_url) in native_downloads.items() if format_url is not None]
191         if formats:
192             for f in formats:
193                 finfo = self._NATIVE_FORMATS.get(f['format_id'])
194                 if finfo:
195                     f.update(finfo)
196
197         player_talk = talk_info['player_talks'][0]
198
199         external = player_talk.get('external')
200         if isinstance(external, dict):
201             service = external.get('service')
202             if isinstance(service, compat_str):
203                 ext_url = None
204                 if service.lower() == 'youtube':
205                     ext_url = external.get('code')
206
207                 return self.url_result(ext_url or external['uri'])
208
209         resources_ = player_talk.get('resources') or talk_info.get('resources')
210
211         http_url = None
212         for format_id, resources in resources_.items():
213             if format_id == 'h264':
214                 for resource in resources:
215                     h264_url = resource.get('file')
216                     if not h264_url:
217                         continue
218                     bitrate = int_or_none(resource.get('bitrate'))
219                     formats.append({
220                         'url': h264_url,
221                         'format_id': '%s-%sk' % (format_id, bitrate),
222                         'tbr': bitrate,
223                     })
224                     if re.search(r'\d+k', h264_url):
225                         http_url = h264_url
226             elif format_id == 'rtmp':
227                 streamer = talk_info.get('streamer')
228                 if not streamer:
229                     continue
230                 for resource in resources:
231                     formats.append({
232                         'format_id': '%s-%s' % (format_id, resource.get('name')),
233                         'url': streamer,
234                         'play_path': resource['file'],
235                         'ext': 'flv',
236                         'width': int_or_none(resource.get('width')),
237                         'height': int_or_none(resource.get('height')),
238                         'tbr': int_or_none(resource.get('bitrate')),
239                     })
240             elif format_id == 'hls':
241                 if not isinstance(resources, dict):
242                     continue
243                 stream_url = url_or_none(resources.get('stream'))
244                 if not stream_url:
245                     continue
246                 formats.extend(self._extract_m3u8_formats(
247                     stream_url, video_name, 'mp4', m3u8_id=format_id,
248                     fatal=False))
249
250         m3u8_formats = list(filter(
251             lambda f: f.get('protocol') == 'm3u8' and f.get('vcodec') != 'none',
252             formats))
253         if http_url:
254             for m3u8_format in m3u8_formats:
255                 bitrate = self._search_regex(r'(\d+k)', m3u8_format['url'], 'bitrate', default=None)
256                 if not bitrate:
257                     continue
258                 bitrate_url = re.sub(r'\d+k', bitrate, http_url)
259                 if not self._is_valid_url(
260                         bitrate_url, video_name, '%s bitrate' % bitrate):
261                     continue
262                 f = m3u8_format.copy()
263                 f.update({
264                     'url': bitrate_url,
265                     'format_id': m3u8_format['format_id'].replace('hls', 'http'),
266                     'protocol': 'http',
267                 })
268                 if f.get('acodec') == 'none':
269                     del f['acodec']
270                 formats.append(f)
271
272         audio_download = talk_info.get('audioDownload')
273         if audio_download:
274             formats.append({
275                 'url': audio_download,
276                 'format_id': 'audio',
277                 'vcodec': 'none',
278             })
279
280         self._sort_formats(formats)
281
282         video_id = compat_str(talk_info['id'])
283
284         return {
285             'id': video_id,
286             'title': title,
287             'uploader': player_talk.get('speaker') or talk_info.get('speaker'),
288             'thumbnail': player_talk.get('thumb') or talk_info.get('thumb'),
289             'description': self._og_search_description(webpage),
290             'subtitles': self._get_subtitles(video_id, talk_info),
291             'formats': formats,
292             'duration': float_or_none(talk_info.get('duration')),
293             'view_count': int_or_none(data.get('viewed_count')),
294             'comment_count': int_or_none(
295                 try_get(data, lambda x: x['comments']['count'])),
296             'tags': try_get(talk_info, lambda x: x['tags'], list),
297         }
298
299     def _get_subtitles(self, video_id, talk_info):
300         sub_lang_list = {}
301         for language in try_get(
302                 talk_info,
303                 (lambda x: x['downloads']['languages'],
304                  lambda x: x['languages']), list):
305             lang_code = language.get('languageCode') or language.get('ianaCode')
306             if not lang_code:
307                 continue
308             sub_lang_list[lang_code] = [
309                 {
310                     'url': 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/%s' % (video_id, lang_code, ext),
311                     'ext': ext,
312                 }
313                 for ext in ['ted', 'srt']
314             ]
315         return sub_lang_list
316
317     def _watch_info(self, url, name):
318         webpage = self._download_webpage(url, name)
319
320         config_json = self._html_search_regex(
321             r'"pages\.jwplayer"\s*,\s*({.+?})\s*\)\s*</script>',
322             webpage, 'config', default=None)
323         if not config_json:
324             embed_url = self._search_regex(
325                 r"<iframe[^>]+class='pages-video-embed__video__object'[^>]+src='([^']+)'", webpage, 'embed url')
326             return self.url_result(self._proto_relative_url(embed_url))
327         config = json.loads(config_json)['config']
328         video_url = config['video']['url']
329         thumbnail = config.get('image', {}).get('url')
330
331         title = self._html_search_regex(
332             r"(?s)<h1(?:\s+class='[^']+')?>(.+?)</h1>", webpage, 'title')
333         description = self._html_search_regex(
334             [
335                 r'(?s)<h4 class="[^"]+" id="h3--about-this-talk">.*?</h4>(.*?)</div>',
336                 r'(?s)<p><strong>About this talk:</strong>\s+(.*?)</p>',
337             ],
338             webpage, 'description', fatal=False)
339
340         return {
341             'id': name,
342             'url': video_url,
343             'title': title,
344             'thumbnail': thumbnail,
345             'description': description,
346         }