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278 lines
10 KiB
Python
278 lines
10 KiB
Python
from __future__ import unicode_literals
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import json
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import re
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from .common import InfoExtractor
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from ..compat import compat_str
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from ..utils import int_or_none
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class TEDIE(InfoExtractor):
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IE_NAME = 'ted'
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_VALID_URL = r'''(?x)
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(?P<proto>https?://)
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(?P<type>www|embed(?:-ssl)?)(?P<urlmain>\.ted\.com/
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(
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(?P<type_playlist>playlists(?:/\d+)?) # We have a playlist
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((?P<type_talk>talks)) # We have a simple talk
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(?P<type_watch>watch)/[^/]+/[^/]+
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)
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(/lang/(.*?))? # The url may contain the language
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/(?P<name>[\w-]+) # Here goes the name and then ".html"
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.*)$
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'''
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_TESTS = [{
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'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
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'md5': 'fc94ac279feebbce69f21c0c6ee82810',
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'info_dict': {
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'id': '102',
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'ext': 'mp4',
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'title': 'The illusion of consciousness',
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'description': ('Philosopher Dan Dennett makes a compelling '
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'argument that not only don\'t we understand our own '
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'consciousness, but that half the time our brains are '
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'actively fooling us.'),
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'uploader': 'Dan Dennett',
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'width': 854,
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'duration': 1308,
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}
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}, {
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'url': 'http://www.ted.com/watch/ted-institute/ted-bcg/vishal-sikka-the-beauty-and-power-of-algorithms',
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'md5': '226f4fb9c62380d11b7995efa4c87994',
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'info_dict': {
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'id': 'vishal-sikka-the-beauty-and-power-of-algorithms',
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'ext': 'mp4',
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'title': 'Vishal Sikka: The beauty and power of algorithms',
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'thumbnail': 're:^https?://.+\.jpg',
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'description': 'Adaptive, intelligent, and consistent, algorithms are emerging as the ultimate app for everything from matching consumers to products to assessing medical diagnoses. Vishal Sikka shares his appreciation for the algorithm, charting both its inherent beauty and its growing power.',
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}
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}, {
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'url': 'http://www.ted.com/talks/gabby_giffords_and_mark_kelly_be_passionate_be_courageous_be_your_best',
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'info_dict': {
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'id': '1972',
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'ext': 'mp4',
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'title': 'Be passionate. Be courageous. Be your best.',
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'uploader': 'Gabby Giffords and Mark Kelly',
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'description': 'md5:5174aed4d0f16021b704120360f72b92',
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'duration': 1128,
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},
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}, {
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'url': 'http://www.ted.com/playlists/who_are_the_hackers',
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'info_dict': {
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'id': '10',
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'title': 'Who are the hackers?',
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},
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'playlist_mincount': 6,
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}, {
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# contains a youtube video
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'url': 'https://www.ted.com/talks/douglas_adams_parrots_the_universe_and_everything',
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'add_ie': ['Youtube'],
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'info_dict': {
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'id': '_ZG8HBuDjgc',
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'ext': 'mp4',
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'title': 'Douglas Adams: Parrots the Universe and Everything',
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'description': 'md5:01ad1e199c49ac640cb1196c0e9016af',
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'uploader': 'University of California Television (UCTV)',
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'uploader_id': 'UCtelevision',
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'upload_date': '20080522',
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},
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'params': {
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'skip_download': True,
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},
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}, {
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# YouTube video
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'url': 'http://www.ted.com/talks/jeffrey_kluger_the_sibling_bond',
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'add_ie': ['Youtube'],
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'info_dict': {
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'id': 'aFBIPO-P7LM',
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'ext': 'mp4',
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'title': 'The hidden power of siblings: Jeff Kluger at TEDxAsheville',
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'description': 'md5:3d7a4f50d95ca5dd67104e2a20f43fe1',
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'uploader': 'TEDx Talks',
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'uploader_id': 'TEDxTalks',
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'upload_date': '20111216',
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},
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'params': {
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'skip_download': True,
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},
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}]
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_NATIVE_FORMATS = {
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'low': {'preference': 1, 'width': 320, 'height': 180},
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'medium': {'preference': 2, 'width': 512, 'height': 288},
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'high': {'preference': 3, 'width': 854, 'height': 480},
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}
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def _extract_info(self, webpage):
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info_json = self._search_regex(r'q\("\w+.init",({.+})\)</script>',
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webpage, 'info json')
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return json.loads(info_json)
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def _real_extract(self, url):
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m = re.match(self._VALID_URL, url, re.VERBOSE)
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if m.group('type').startswith('embed'):
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desktop_url = m.group('proto') + 'www' + m.group('urlmain')
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return self.url_result(desktop_url, 'TED')
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name = m.group('name')
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if m.group('type_talk'):
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return self._talk_info(url, name)
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elif m.group('type_watch'):
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return self._watch_info(url, name)
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else:
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return self._playlist_videos_info(url, name)
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def _playlist_videos_info(self, url, name):
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'''Returns the videos of the playlist'''
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webpage = self._download_webpage(url, name,
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'Downloading playlist webpage')
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info = self._extract_info(webpage)
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playlist_info = info['playlist']
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playlist_entries = [
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self.url_result('http://www.ted.com/talks/' + talk['slug'], self.ie_key())
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for talk in info['talks']
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]
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return self.playlist_result(
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playlist_entries,
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playlist_id=compat_str(playlist_info['id']),
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playlist_title=playlist_info['title'])
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def _talk_info(self, url, video_name):
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webpage = self._download_webpage(url, video_name)
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self.report_extraction(video_name)
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talk_info = self._extract_info(webpage)['talks'][0]
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external = talk_info.get('external')
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if external:
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service = external['service']
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self.to_screen('Found video from %s' % service)
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ext_url = None
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if service.lower() == 'youtube':
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ext_url = external.get('code')
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return {
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'_type': 'url',
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'url': ext_url or external['uri'],
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}
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formats = [{
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'url': format_url,
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'format_id': format_id,
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'format': format_id,
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} for (format_id, format_url) in talk_info['nativeDownloads'].items() if format_url is not None]
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if formats:
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for f in formats:
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finfo = self._NATIVE_FORMATS.get(f['format_id'])
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if finfo:
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f.update(finfo)
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for format_id, resources in talk_info['resources'].items():
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if format_id == 'h264':
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for resource in resources:
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bitrate = int_or_none(resource.get('bitrate'))
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formats.append({
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'url': resource['file'],
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'format_id': '%s-%sk' % (format_id, bitrate),
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'tbr': bitrate,
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})
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elif format_id == 'rtmp':
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streamer = talk_info.get('streamer')
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if not streamer:
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continue
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for resource in resources:
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formats.append({
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'format_id': '%s-%s' % (format_id, resource.get('name')),
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'url': streamer,
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'play_path': resource['file'],
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'ext': 'flv',
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'width': int_or_none(resource.get('width')),
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'height': int_or_none(resource.get('height')),
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'tbr': int_or_none(resource.get('bitrate')),
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})
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elif format_id == 'hls':
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hls_formats = self._extract_m3u8_formats(
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resources.get('stream'), video_name, 'mp4', m3u8_id=format_id)
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for f in hls_formats:
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if f.get('format_id') == 'hls-meta':
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continue
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if not f.get('height'):
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f['vcodec'] = 'none'
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else:
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f['acodec'] = 'none'
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formats.extend(hls_formats)
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audio_download = talk_info.get('audioDownload')
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if audio_download:
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formats.append({
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'url': audio_download,
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'format_id': 'audio',
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'vcodec': 'none',
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'preference': -0.5,
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})
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self._sort_formats(formats)
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video_id = compat_str(talk_info['id'])
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thumbnail = talk_info['thumb']
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if not thumbnail.startswith('http'):
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thumbnail = 'http://' + thumbnail
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return {
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'id': video_id,
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'title': talk_info['title'].strip(),
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'uploader': talk_info['speaker'],
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'thumbnail': thumbnail,
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'description': self._og_search_description(webpage),
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'subtitles': self._get_subtitles(video_id, talk_info),
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'formats': formats,
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'duration': talk_info.get('duration'),
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}
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def _get_subtitles(self, video_id, talk_info):
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languages = [lang['languageCode'] for lang in talk_info.get('languages', [])]
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if languages:
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sub_lang_list = {}
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for l in languages:
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sub_lang_list[l] = [
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{
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'url': 'http://www.ted.com/talks/subtitles/id/%s/lang/%s/format/%s' % (video_id, l, ext),
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'ext': ext,
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}
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for ext in ['ted', 'srt']
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]
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return sub_lang_list
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else:
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return {}
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def _watch_info(self, url, name):
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webpage = self._download_webpage(url, name)
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config_json = self._html_search_regex(
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r'"pages\.jwplayer"\s*,\s*({.+?})\s*\)\s*</script>',
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webpage, 'config')
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config = json.loads(config_json)['config']
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video_url = config['video']['url']
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thumbnail = config.get('image', {}).get('url')
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title = self._html_search_regex(
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r"(?s)<h1(?:\s+class='[^']+')?>(.+?)</h1>", webpage, 'title')
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description = self._html_search_regex(
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[
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r'(?s)<h4 class="[^"]+" id="h3--about-this-talk">.*?</h4>(.*?)</div>',
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r'(?s)<p><strong>About this talk:</strong>\s+(.*?)</p>',
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],
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webpage, 'description', fatal=False)
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return {
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'id': name,
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'url': video_url,
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'title': title,
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'thumbnail': thumbnail,
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'description': description,
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}
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