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[Ted] Rewrite extractor (#2359)

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Closes #2343
Authored by: pukkandan, trassshhub
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trasssh 2022-01-20 00:04:20 +08:00 committed by GitHub
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4 changed files with 194 additions and 314 deletions
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4
test/test_subtitles.py
View file

@ -13,7 +13,7 @@
from yt_dlp.extractor import (
YoutubeIE,
DailymotionIE,
TEDIE,
TedTalkIE,
VimeoIE,
WallaIE,
CeskaTelevizeIE,
@ -141,7 +141,7 @@ def test_nosubtitles(self):
@is_download_test
class TestTedSubtitles(BaseTestSubtitles):
url = 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html'
IE = TEDIE
IE = TedTalkIE
def test_allsubtitles(self):
self.DL.params['writesubtitles'] = True

7
yt_dlp/extractor/extractors.py
View file

@ -1522,7 +1522,12 @@
from .teamcoco import TeamcocoIE
from .teamtreehouse import TeamTreeHouseIE
from .techtalks import TechTalksIE
from .ted import TEDIE
from .ted import (
TedEmbedIE,
TedPlaylistIE,
TedSeriesIE,
TedTalkIE,
)
from .tele5 import Tele5IE
from .tele13 import Tele13IE
from .telebruxelles import TeleBruxellesIE

8
yt_dlp/extractor/generic.py
View file

@ -115,6 +115,7 @@
from .vshare import VShareIE
from .mediasite import MediasiteIE
from .springboardplatform import SpringboardPlatformIE
from .ted import TedEmbedIE
from .yapfiles import YapFilesIE
from .vice import ViceIE
from .xfileshare import XFileShareIE
@ -3174,10 +3175,9 @@ def _real_extract(self, url):
return self.url_result(mobj.group('url'), 'Tvigle')
# Look for embedded TED player
mobj = re.search(
r'<iframe[^>]+?src=(["\'])(?P<url>https?://embed(?:-ssl)?\.ted\.com/.+?)\1', webpage)
if mobj is not None:
return self.url_result(mobj.group('url'), 'TED')
ted_urls = TedEmbedIE._extract_urls(webpage)
if ted_urls:
return self.playlist_from_matches(ted_urls, video_id, video_title, ie=TedEmbedIE.ie_key())
# Look for embedded Ustream videos
ustream_url = UstreamIE._extract_url(webpage)

489
yt_dlp/extractor/ted.py
View file

@ -1,274 +1,105 @@
from __future__ import unicode_literals
import json
import itertools
import re
from .common import InfoExtractor
from ..compat import (
compat_str,
compat_urlparse
)
from ..utils import (
extract_attributes,
float_or_none,
int_or_none,
str_to_int,
try_get,
url_or_none,
unified_strdate,
parse_duration,
)
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(?:/(?P<playlist_id>\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"
.*)$
'''
class TedBaseIE(InfoExtractor):
_VALID_URL_BASE = r'https?://www\.ted\.com/(?:{type})(?:/lang/[^/#?]+)?/(?P<id>[\w-]+)'
def _parse_playlist(self, playlist):
for entry in try_get(playlist, lambda x: x['videos']['nodes'], list):
if entry.get('__typename') == 'Video' and entry.get('canonicalUrl'):
yield self.url_result(entry['canonicalUrl'], TedTalkIE.ie_key())
class TedTalkIE(TedBaseIE):
_VALID_URL = TedBaseIE._VALID_URL_BASE.format(type='talks')
_TESTS = [{
'url': 'http://www.ted.com/talks/dan_dennett_on_our_consciousness.html',
'md5': 'b0ce2b05ca215042124fbc9e3886493a',
'url': 'https://www.ted.com/talks/candace_parker_how_to_break_down_barriers_and_not_accept_limits',
'md5': '47e82c666d9c3261d4fe74748a90aada',
'info_dict': {
'id': '102',
'id': '86532',
'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,
'title': 'How to break down barriers and not accept limits',
'description': 'md5:000707cece219d1e165b11550d612331',
'view_count': int,
'comment_count': int,
'tags': list,
'tags': ['personal growth', 'equality', 'activism', 'motivation', 'social change', 'sports'],
'uploader': 'Candace Parker',
'duration': 676.0,
'upload_date': '20220114',
'release_date': '20211201',
'thumbnail': r're:http.*\.jpg',
},
'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?',
'description': 'md5:49a0dbe8fb76d81a0e64b4a80af7f15a'
},
'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,
},
}, {
# with own formats and private Youtube external
'url': 'https://www.ted.com/talks/spencer_wells_a_family_tree_for_humanity',
'only_matching': 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')
playlist_entries = []
for entry in re.findall(r'(?s)<[^>]+data-ga-context=["\']playlist["\'][^>]*>', webpage):
attrs = extract_attributes(entry)
entry_url = compat_urlparse.urljoin(url, attrs['href'])
playlist_entries.append(self.url_result(entry_url, self.ie_key()))
final_url = self._og_search_url(webpage, fatal=False)
playlist_id = (
re.match(self._VALID_URL, final_url).group('playlist_id')
if final_url else None)
return self.playlist_result(
playlist_entries, playlist_id=playlist_id,
playlist_title=self._og_search_title(webpage, fatal=False),
playlist_description=self._og_search_description(webpage))
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()
downloads = talk_info.get('downloads') or {}
native_downloads = downloads.get('nativeDownloads') or talk_info.get('nativeDownloads') or {}
formats = [{
'url': format_url,
'format_id': format_id,
} for (format_id, format_url) in native_downloads.items() if format_url is not None]
subtitled_downloads = downloads.get('subtitledDownloads') or {}
for lang, subtitled_download in subtitled_downloads.items():
for q in self._NATIVE_FORMATS:
q_url = subtitled_download.get(q)
if not q_url:
continue
formats.append({
'url': q_url,
'format_id': '%s-%s' % (q, lang),
'language': lang,
})
if formats:
for f in formats:
finfo = self._NATIVE_FORMATS.get(f['format_id'].split('-')[0])
if finfo:
f.update(finfo)
player_talk = talk_info['player_talks'][0]
resources_ = player_talk.get('resources') or talk_info.get('resources')
display_id = self._match_id(url)
webpage = self._download_webpage(url, display_id)
talk_info = self._search_nextjs_data(webpage, display_id)['props']['pageProps']['videoData']
video_id = talk_info['id']
playerData = self._parse_json(talk_info.get('playerData'), video_id)
http_url = None
for format_id, resources in resources_.items():
formats, subtitles = [], {}
for format_id, resources in (playerData.get('resources') or {}).items():
if format_id == 'hls':
if not isinstance(resources, dict):
continue
stream_url = url_or_none(resources.get('stream'))
stream_url = url_or_none(try_get(resources, lambda x: x['stream']))
if not stream_url:
continue
formats.extend(self._extract_m3u8_formats(
stream_url, video_name, 'mp4', m3u8_id=format_id,
fatal=False))
else:
if not isinstance(resources, list):
continue
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')),
})
m3u8_formats, m3u8_subs = self._extract_m3u8_formats_and_subtitles(
stream_url, video_id, 'mp4', m3u8_id=format_id, fatal=False)
formats.extend(m3u8_formats)
subtitles = self._merge_subtitles(subtitles, m3u8_subs)
continue
if not isinstance(resources, list):
continue
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
formats.extend({
'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')),
} for resource in resources if resource.get('file'))
m3u8_formats = list(filter(
lambda f: f.get('protocol') == 'm3u8' and f.get('vcodec') != 'none',
formats))
if http_url:
m3u8_formats = [f for f in formats if f.get('protocol') == 'm3u8' and f.get('vcodec') != 'none']
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):
bitrate_url, video_id, '%s bitrate' % bitrate):
continue
f = m3u8_format.copy()
f.update({
@ -289,79 +120,123 @@ def _talk_info(self, url, video_name):
})
if not formats:
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'])
external = playerData.get('external') or {}
service = external.get('service') or ''
ext_url = external.get('code') if service.lower() == 'youtube' else None
return self.url_result(ext_url or external['uri'])
self._sort_formats(formats)
video_id = compat_str(talk_info['id'])
thumbnail = playerData.get('thumb') or self._og_search_property('image', webpage)
if thumbnail:
# trim thumbnail resize parameters
thumbnail = thumbnail.split('?')[0]
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,
'title': talk_info.get('title') or self._og_search_title(webpage),
'uploader': talk_info.get('presenterDisplayName'),
'thumbnail': thumbnail,
'description': description,
'description': talk_info.get('description') or self._og_search_description(webpage),
'subtitles': subtitles,
'formats': formats,
'duration': talk_info.get('duration') or parse_duration(self._og_search_property('video:duration', webpage)),
'view_count': str_to_int(talk_info.get('viewedCount')),
'upload_date': unified_strdate(talk_info.get('publishedAt')),
'release_date': unified_strdate(talk_info.get('recordedOn')),
'tags': try_get(playerData, lambda x: x['targeting']['tag'].split(',')),
}
class TedSeriesIE(TedBaseIE):
_VALID_URL = fr'{TedBaseIE._VALID_URL_BASE.format(type=r"series")}(?:#season_(?P<season>\d+))?'
_TESTS = [{
'url': 'https://www.ted.com/series/small_thing_big_idea',
'info_dict': {
'id': '3',
'title': 'Small Thing Big Idea',
'series': 'Small Thing Big Idea',
'description': 'md5:6869ca52cec661aef72b3e9f7441c55c'
},
'playlist_mincount': 16,
}, {
'url': 'https://www.ted.com/series/the_way_we_work#season_2',
'info_dict': {
'id': '8_2',
'title': 'The Way We Work Season 2',
'series': 'The Way We Work',
'description': 'md5:59469256e533e1a48c4aa926a382234c',
'season_number': 2
},
'playlist_mincount': 8,
}]
def _real_extract(self, url):
display_id, season = self._match_valid_url(url).group('id', 'season')
webpage = self._download_webpage(url, display_id, 'Downloading series webpage')
info = self._search_nextjs_data(webpage, display_id)['props']['pageProps']
entries = itertools.chain.from_iterable(
self._parse_playlist(s) for s in info['seasons'] if season in [None, s.get('seasonNumber')])
series_id = try_get(info, lambda x: x['series']['id'])
series_name = try_get(info, lambda x: x['series']['name']) or self._og_search_title(webpage, fatal=False)
return self.playlist_result(
entries,
f'{series_id}_{season}' if season and series_id else series_id,
f'{series_name} Season {season}' if season else series_name,
self._og_search_description(webpage),
series=series_name, season_number=int_or_none(season))
class TedPlaylistIE(TedBaseIE):
_VALID_URL = TedBaseIE._VALID_URL_BASE.format(type=r'playlists(?:/\d+)?')
_TESTS = [{
'url': 'https://www.ted.com/playlists/171/the_most_popular_talks_of_all',
'info_dict': {
'id': '171',
'title': 'The most popular talks of all time',
'description': 'md5:d2f22831dc86c7040e733a3cb3993d78'
},
'playlist_mincount': 25,
}]
def _real_extract(self, url):
display_id = self._match_id(url)
webpage = self._download_webpage(url, display_id)
playlist = self._search_nextjs_data(webpage, display_id)['props']['pageProps']['playlist']
return self.playlist_result(
self._parse_playlist(playlist), playlist.get('id'),
playlist.get('title') or self._og_search_title(webpage, default='').replace(' | TED Talks', '') or None,
self._og_search_description(webpage))
class TedEmbedIE(InfoExtractor):
_VALID_URL = r'https?://embed(?:-ssl)?\.ted\.com/'
_TESTS = [{
'url': 'https://embed.ted.com/talks/janet_stovall_how_to_get_serious_about_diversity_and_inclusion_in_the_workplace',
'info_dict': {
'id': '21802',
'ext': 'mp4',
'title': 'How to get serious about diversity and inclusion in the workplace',
'description': 'md5:0978aafe396e05341f8ecc795d22189d',
'view_count': int,
'tags': list,
'uploader': 'Janet Stovall',
'duration': 664.0,
'upload_date': '20180822',
'release_date': '20180719',
'thumbnail': r're:http.*\.jpg',
},
}]
@classmethod
def _extract_urls(cls, webpage):
return [mobj.group('url') for mobj in re.finditer(
fr'<iframe[^>]+?src=(["\'])(?P<url>{cls._VALID_URL}.+?)\1', webpage)]
def _real_extract(self, url):
return self.url_result(re.sub(r'://embed(-ssl)?', '://www', url), TedTalkIE.ie_key())