mirror of
https://github.com/l1ving/youtube-dl
synced 2024-11-30 14:52:53 +08:00
144 lines
4.6 KiB
Python
144 lines
4.6 KiB
Python
# coding: utf-8
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from __future__ import unicode_literals
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import re
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from .common import InfoExtractor
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from ..utils import (
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determine_ext,
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float_or_none,
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int_or_none,
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parse_filesize,
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)
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class LibraryOfCongressIE(InfoExtractor):
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IE_NAME = 'loc'
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IE_DESC = 'Library of Congress'
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_VALID_URL = r'https?://(?:www\.)?loc\.gov/(?:item/|today/cyberlc/feature_wdesc\.php\?.*\brec=)(?P<id>[0-9]+)'
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_TESTS = [{
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# embedded via <div class="media-player"
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'url': 'http://loc.gov/item/90716351/',
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'md5': '353917ff7f0255aa6d4b80a034833de8',
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'info_dict': {
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'id': '90716351',
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'ext': 'mp4',
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'title': "Pa's trip to Mars",
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'thumbnail': 're:^https?://.*\.jpg$',
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'duration': 0,
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'view_count': int,
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},
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}, {
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# webcast embedded via mediaObjectId
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'url': 'https://www.loc.gov/today/cyberlc/feature_wdesc.php?rec=5578',
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'info_dict': {
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'id': '5578',
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'ext': 'mp4',
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'title': 'Help! Preservation Training Needs Here, There & Everywhere',
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'duration': 3765,
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'view_count': int,
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'subtitles': 'mincount:1',
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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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# with direct download links
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'url': 'https://www.loc.gov/item/78710669/',
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'info_dict': {
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'id': '78710669',
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'ext': 'mp4',
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'title': 'La vie et la passion de Jesus-Christ',
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'duration': 0,
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'view_count': int,
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'formats': 'mincount:4',
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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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def _real_extract(self, url):
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video_id = self._match_id(url)
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webpage = self._download_webpage(url, video_id)
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media_id = self._search_regex(
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(r'id=(["\'])media-player-(?P<id>.+?)\1',
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r'<video[^>]+id=(["\'])uuid-(?P<id>.+?)\1',
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r'<video[^>]+data-uuid=(["\'])(?P<id>.+?)\1',
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r'mediaObjectId\s*:\s*(["\'])(?P<id>.+?)\1'),
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webpage, 'media id', group='id')
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data = self._download_json(
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'https://media.loc.gov/services/v1/media?id=%s&context=json' % media_id,
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video_id)['mediaObject']
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derivative = data['derivatives'][0]
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media_url = derivative['derivativeUrl']
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title = derivative.get('shortName') or data.get('shortName') or self._og_search_title(
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webpage)
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# Following algorithm was extracted from setAVSource js function
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# found in webpage
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media_url = media_url.replace('rtmp', 'https')
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is_video = data.get('mediaType', 'v').lower() == 'v'
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ext = determine_ext(media_url)
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if ext not in ('mp4', 'mp3'):
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media_url += '.mp4' if is_video else '.mp3'
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if 'vod/mp4:' in media_url:
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formats = [{
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'url': media_url.replace('vod/mp4:', 'hls-vod/media/') + '.m3u8',
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'format_id': 'hls',
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'ext': 'mp4',
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'protocol': 'm3u8_native',
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'quality': 1,
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}]
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elif 'vod/mp3:' in media_url:
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formats = [{
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'url': media_url.replace('vod/mp3:', ''),
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'vcodec': 'none',
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}]
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download_urls = set()
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for m in re.finditer(
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r'<option[^>]+value=(["\'])(?P<url>.+?)\1[^>]+data-file-download=[^>]+>\s*(?P<id>.+?)(?:(?: |\s+)\((?P<size>.+?)\))?\s*<', webpage):
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format_id = m.group('id').lower()
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if format_id == 'gif':
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continue
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download_url = m.group('url')
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if download_url in download_urls:
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continue
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download_urls.add(download_url)
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formats.append({
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'url': download_url,
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'format_id': format_id,
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'filesize_approx': parse_filesize(m.group('size')),
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})
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self._sort_formats(formats)
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duration = float_or_none(data.get('duration'))
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view_count = int_or_none(data.get('viewCount'))
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subtitles = {}
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cc_url = data.get('ccUrl')
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if cc_url:
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subtitles.setdefault('en', []).append({
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'url': cc_url,
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'ext': 'ttml',
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})
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return {
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'id': video_id,
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'title': title,
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'thumbnail': self._og_search_thumbnail(webpage, default=None),
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'duration': duration,
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'view_count': view_count,
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'formats': formats,
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'subtitles': subtitles,
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}
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