from __future__ import unicode_literals import json import re from .common import InfoExtractor from ..compat import compat_str from ..utils import ( float_or_none, int_or_none, try_get, url_or_none, ) class TEDIE(InfoExtractor): IE_NAME = 'ted' _VALID_URL = r'''(?x) (?P<proto>https?://) (?P<type>www|embed(?:-ssl)?)(?P<urlmain>\.ted\.com/ ( (?P<type_playlist>playlists(?:/\d+)?) # We have a playlist | ((?P<type_talk>talks)) # We have a simple talk | (?P<type_watch>watch)/[^/]+/[^/]+ ) (/lang/(.*?))? # The url may contain the language /(?P<name>[\w-]+) # Here goes the name and then ".html" .*)$ ''' _TESTS = [{ 'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html', 'md5': 'b0ce2b05ca215042124fbc9e3886493a', 'info_dict': { 'id': '102', 'ext': 'mp4', 'title': 'The illusion of consciousness', 'description': ('Philosopher Dan Dennett makes a compelling ' 'argument that not only don\'t we understand our own ' 'consciousness, but that half the time our brains are ' 'actively fooling us.'), 'uploader': 'Dan Dennett', 'width': 853, 'duration': 1308, 'view_count': int, 'comment_count': int, 'tags': list, }, 'params': { 'skip_download': True, }, }, { # missing HTTP bitrates 'url': 'https://www.ted.com/talks/vishal_sikka_the_beauty_and_power_of_algorithms', 'info_dict': { 'id': '6069', 'ext': 'mp4', 'title': 'The beauty and power of algorithms', 'thumbnail': r're:^https?://.+\.jpg', 'description': 'md5:734e352710fb00d840ab87ae31aaf688', 'uploader': 'Vishal Sikka', }, 'params': { 'skip_download': True, }, }, { 'url': 'http://www.ted.com/talks/gabby_giffords_and_mark_kelly_be_passionate_be_courageous_be_your_best', 'md5': 'e6b9617c01a7970ceac8bb2c92c346c0', 'info_dict': { 'id': '1972', 'ext': 'mp4', 'title': 'Be passionate. Be courageous. Be your best.', 'uploader': 'Gabby Giffords and Mark Kelly', 'description': 'md5:5174aed4d0f16021b704120360f72b92', 'duration': 1128, }, 'params': { 'skip_download': True, }, }, { 'url': 'http://www.ted.com/playlists/who_are_the_hackers', 'info_dict': { 'id': '10', 'title': 'Who are the hackers?', }, 'playlist_mincount': 6, }, { # contains a youtube video 'url': 'https://www.ted.com/talks/douglas_adams_parrots_the_universe_and_everything', 'add_ie': ['Youtube'], 'info_dict': { 'id': '_ZG8HBuDjgc', 'ext': 'webm', 'title': 'Douglas Adams: Parrots the Universe and Everything', 'description': 'md5:01ad1e199c49ac640cb1196c0e9016af', 'uploader': 'University of California Television (UCTV)', 'uploader_id': 'UCtelevision', 'upload_date': '20080522', }, 'params': { 'skip_download': True, }, }, { # no nativeDownloads 'url': 'https://www.ted.com/talks/tom_thum_the_orchestra_in_my_mouth', 'info_dict': { 'id': '1792', 'ext': 'mp4', 'title': 'The orchestra in my mouth', 'description': 'md5:5d1d78650e2f8dfcbb8ebee2951ac29a', 'uploader': 'Tom Thum', 'view_count': int, 'comment_count': int, 'tags': list, }, 'params': { 'skip_download': True, }, }] _NATIVE_FORMATS = { 'low': {'width': 320, 'height': 180}, 'medium': {'width': 512, 'height': 288}, 'high': {'width': 854, 'height': 480}, } def _extract_info(self, webpage): info_json = self._search_regex( r'(?s)q\(\s*"\w+.init"\s*,\s*({.+})\)\s*</script>', webpage, 'info json') return json.loads(info_json) def _real_extract(self, url): m = re.match(self._VALID_URL, url, re.VERBOSE) if m.group('type').startswith('embed'): desktop_url = m.group('proto') + 'www' + m.group('urlmain') return self.url_result(desktop_url, 'TED') name = m.group('name') if m.group('type_talk'): return self._talk_info(url, name) elif m.group('type_watch'): return self._watch_info(url, name) else: return self._playlist_videos_info(url, name) def _playlist_videos_info(self, url, name): '''Returns the videos of the playlist''' webpage = self._download_webpage(url, name, 'Downloading playlist webpage') info = self._extract_info(webpage) playlist_info = try_get( info, lambda x: x['__INITIAL_DATA__']['playlist'], dict) or info['playlist'] playlist_entries = [ self.url_result('http://www.ted.com/talks/' + talk['slug'], self.ie_key()) for talk in try_get( info, lambda x: x['__INITIAL_DATA__']['talks'], dict) or info['talks'] ] return self.playlist_result( playlist_entries, playlist_id=compat_str(playlist_info['id']), playlist_title=playlist_info['title']) def _talk_info(self, url, video_name): webpage = self._download_webpage(url, video_name) info = self._extract_info(webpage) data = try_get(info, lambda x: x['__INITIAL_DATA__'], dict) or info talk_info = data['talks'][0] title = talk_info['title'].strip() native_downloads = try_get( talk_info, (lambda x: x['downloads']['nativeDownloads'], lambda x: x['nativeDownloads']), dict) or {} formats = [{ 'url': format_url, 'format_id': format_id, 'format': format_id, } for (format_id, format_url) in native_downloads.items() if format_url is not None] if formats: for f in formats: finfo = self._NATIVE_FORMATS.get(f['format_id']) if finfo: f.update(finfo) player_talk = talk_info['player_talks'][0] external = player_talk.get('external') if isinstance(external, dict): service = external.get('service') if isinstance(service, compat_str): ext_url = None if service.lower() == 'youtube': ext_url = external.get('code') return self.url_result(ext_url or external['uri']) resources_ = player_talk.get('resources') or talk_info.get('resources') http_url = None for format_id, resources in resources_.items(): if format_id == 'h264': for resource in resources: h264_url = resource.get('file') if not h264_url: continue bitrate = int_or_none(resource.get('bitrate')) formats.append({ 'url': h264_url, 'format_id': '%s-%sk' % (format_id, bitrate), 'tbr': bitrate, }) if re.search(r'\d+k', h264_url): http_url = h264_url elif format_id == 'rtmp': streamer = talk_info.get('streamer') if not streamer: continue for resource in resources: formats.append({ 'format_id': '%s-%s' % (format_id, resource.get('name')), 'url': streamer, 'play_path': resource['file'], 'ext': 'flv', 'width': int_or_none(resource.get('width')), 'height': int_or_none(resource.get('height')), 'tbr': int_or_none(resource.get('bitrate')), }) elif format_id == 'hls': if not isinstance(resources, dict): continue stream_url = url_or_none(resources.get('stream')) if not stream_url: continue formats.extend(self._extract_m3u8_formats( stream_url, video_name, 'mp4', m3u8_id=format_id, fatal=False)) m3u8_formats = list(filter( lambda f: f.get('protocol') == 'm3u8' and f.get('vcodec') != 'none', formats)) if http_url: for m3u8_format in m3u8_formats: bitrate = self._search_regex(r'(\d+k)', m3u8_format['url'], 'bitrate', default=None) if not bitrate: continue bitrate_url = re.sub(r'\d+k', bitrate, http_url) if not self._is_valid_url( bitrate_url, video_name, '%s bitrate' % bitrate): continue f = m3u8_format.copy() f.update({ 'url': bitrate_url, 'format_id': m3u8_format['format_id'].replace('hls', 'http'), 'protocol': 'http', }) formats.append(f) audio_download = talk_info.get('audioDownload') if audio_download: formats.append({ 'url': audio_download, 'format_id': 'audio', 'vcodec': 'none', }) self._sort_formats(formats) video_id = compat_str(talk_info['id']) return { 'id': video_id, 'title': title, 'uploader': player_talk.get('speaker') or talk_info.get('speaker'), 'thumbnail': player_talk.get('thumb') or talk_info.get('thumb'), 'description': self._og_search_description(webpage), 'subtitles': self._get_subtitles(video_id, talk_info), 'formats': formats, 'duration': float_or_none(talk_info.get('duration')), 'view_count': int_or_none(data.get('viewed_count')), 'comment_count': int_or_none( try_get(data, lambda x: x['comments']['count'])), 'tags': try_get(talk_info, lambda x: x['tags'], list), } def _get_subtitles(self, video_id, talk_info): sub_lang_list = {} for language in try_get( talk_info, (lambda x: x['downloads']['languages'], lambda x: x['languages']), list): lang_code = language.get('languageCode') or language.get('ianaCode') if not lang_code: continue sub_lang_list[lang_code] = [ { 'url': 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/%s' % (video_id, lang_code, ext), 'ext': ext, } for ext in ['ted', 'srt'] ] return sub_lang_list def _watch_info(self, url, name): webpage = self._download_webpage(url, name) config_json = self._html_search_regex( r'"pages\.jwplayer"\s*,\s*({.+?})\s*\)\s*</script>', webpage, 'config', default=None) if not config_json: embed_url = self._search_regex( r"<iframe[^>]+class='pages-video-embed__video__object'[^>]+src='([^']+)'", webpage, 'embed url') return self.url_result(self._proto_relative_url(embed_url)) config = json.loads(config_json)['config'] video_url = config['video']['url'] thumbnail = config.get('image', {}).get('url') title = self._html_search_regex( r"(?s)<h1(?:\s+class='[^']+')?>(.+?)</h1>", webpage, 'title') description = self._html_search_regex( [ r'(?s)<h4 class="[^"]+" id="h3--about-this-talk">.*?</h4>(.*?)</div>', r'(?s)<p><strong>About this talk:</strong>\s+(.*?)</p>', ], webpage, 'description', fatal=False) return { 'id': name, 'url': video_url, 'title': title, 'thumbnail': thumbnail, 'description': description, }