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https://github.com/ytdl-org/youtube-dl.git
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a504ced097
For each language the extractor builds a list with the available formats sorted (like for video formats), then YoutubeDL selects one of them using the '--sub-format' option which now allows giving the format preferences (for example 'ass/srt/best'). For each format the 'url' field can be set so that we only download the contents if needed, or if the contents needs to be processed (like in crunchyroll) the 'data' field can be used. The reasons for this change are: * We weren't checking that the format given with '--sub-format' was available, checking it in each extractor would be repetitive. * It allows to easily support giving a format preference. * The subtitles were automatically downloaded in the extractor, but I think that if you use for example the '--dump-json' option you want to finish as fast as possible. Currently only the ted extractor has been updated, but the old system still works.
226 lines
8.3 KiB
Python
226 lines
8.3 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 (
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compat_str,
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)
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class TEDIE(InfoExtractor):
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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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_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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if talk_info.get('external') is not None:
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self.to_screen('Found video from %s' % talk_info['external']['service'])
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return {
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'_type': 'url',
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'url': talk_info['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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else:
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# Use rtmp downloads
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formats = [{
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'format_id': f['name'],
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'url': talk_info['streamer'],
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'play_path': f['file'],
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'ext': 'flv',
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'width': f['width'],
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'height': f['height'],
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'tbr': f['bitrate'],
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} for f in talk_info['resources']['rtmp']]
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self._sort_formats(formats)
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video_id = compat_str(talk_info['id'])
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# subtitles
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video_subtitles = self.extract_subtitles(video_id, talk_info)
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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': video_subtitles,
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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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self._downloader.report_warning('video doesn\'t have subtitles')
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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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