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from __future__ import unicode_literals
import json
import re
from .common import InfoExtractor
from ..compat import compat_str
from ..utils import int_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': '0de43ac406aa3e4ea74b66c9c7789b13',
'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,
}
}, {
'url': 'http://www.ted.com/watch/ted-institute/ted-bcg/vishal-sikka-the-beauty-and-power-of-algorithms',
'md5': 'b899ac15e345fb39534d913f7606082b',
'info_dict': {
'id': 'tSVI8ta_P4w',
'ext': 'mp4',
'title': 'Vishal Sikka: The beauty and power of algorithms',
'thumbnail': r're:^https?://.+\.jpg',
'description': 'md5:6261fdfe3e02f4f579cbbfc00aff73f4',
'upload_date': '20140122',
'uploader_id': 'TEDInstitute',
'uploader': 'TED Institute',
},
'add_ie': ['Youtube'],
}, {
'url': 'http://www.ted.com/talks/gabby_giffords_and_mark_kelly_be_passionate_be_courageous_be_your_best',
'md5': '71b3ab2f4233012dce09d515c9c39ce2',
'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,
},
}, {
'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,
},
}, {
# YouTube video
'url': 'http://www.ted.com/talks/jeffrey_kluger_the_sibling_bond',
'add_ie': ['Youtube'],
'info_dict': {
'id': 'aFBIPO-P7LM',
'ext': 'mp4',
'title': 'The hidden power of siblings: Jeff Kluger at TEDxAsheville',
'description': 'md5:3d7a4f50d95ca5dd67104e2a20f43fe1',
'uploader': 'TEDx Talks',
'uploader_id': 'TEDxTalks',
'upload_date': '20111216',
},
'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'q\("\w+.init",({.+})\)</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 = info['playlist']
playlist_entries = [
self.url_result('http://www.ted.com/talks/' + talk['slug'], self.ie_key())
for talk in 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)
self.report_extraction(video_name)
talk_info = self._extract_info(webpage)['talks'][0]
external = talk_info.get('external')
if external:
service = external['service']
self.to_screen('Found video from %s' % service)
ext_url = None
if service.lower() == 'youtube':
ext_url = external.get('code')
return {
'_type': 'url',
'url': ext_url or external['uri'],
}
formats = [{
'url': format_url,
'format_id': format_id,
'format': format_id,
} for (format_id, format_url) in talk_info['nativeDownloads'].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)
http_url = None
for format_id, resources in talk_info['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':
formats.extend(self._extract_m3u8_formats(
resources.get('stream'), 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
f = m3u8_format.copy()
f.update({
'url': re.sub(r'\d+k', bitrate, http_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'])
thumbnail = talk_info['thumb']
if not thumbnail.startswith('http'):
thumbnail = 'http://' + thumbnail
return {
'id': video_id,
'title': talk_info['title'].strip(),
'uploader': talk_info['speaker'],
'thumbnail': thumbnail,
'description': self._og_search_description(webpage),
'subtitles': self._get_subtitles(video_id, talk_info),
'formats': formats,
'duration': talk_info.get('duration'),
}
def _get_subtitles(self, video_id, talk_info):
languages = [lang['languageCode'] for lang in talk_info.get('languages', [])]
if languages:
sub_lang_list = {}
for l in languages:
sub_lang_list[l] = [
{
'url': 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/%s' % (video_id, l, ext),
'ext': ext,
}
for ext in ['ted', 'srt']
]
return sub_lang_list
else:
return {}
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,
}
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