diff --git a/youtube_dlc/YoutubeDL.py b/youtube_dlc/YoutubeDL.py index ad25dfba4..8156a8a28 100644 --- a/youtube_dlc/YoutubeDL.py +++ b/youtube_dlc/YoutubeDL.py @@ -2681,7 +2681,7 @@ class YoutubeDL(object): '|', format_field(f, 'filesize', ' %s', func=format_bytes) + format_field(f, 'filesize_approx', '~%s', func=format_bytes), format_field(f, 'tbr', '%4dk'), - f.get('protocol').replace('http_dash_segments', 'dash').replace("native", "n"), + f.get('protocol').replace('http_dash_segments', 'dash').replace("native", "n").replace('niconico_', ''), '|', format_field(f, 'vcodec', default='unknown').replace('none', ''), format_field(f, 'vbr', '%4dk'), diff --git a/youtube_dlc/downloader/__init__.py b/youtube_dlc/downloader/__init__.py index 0af65890b..a15e3fd45 100644 --- a/youtube_dlc/downloader/__init__.py +++ b/youtube_dlc/downloader/__init__.py @@ -21,6 +21,7 @@ from .http import HttpFD from .rtmp import RtmpFD from .rtsp import RtspFD from .ism import IsmFD +from .niconico import NiconicoDmcFD from .youtube_live_chat import YoutubeLiveChatReplayFD from .external import ( get_external_downloader, @@ -36,6 +37,7 @@ PROTOCOL_MAP = { 'f4m': F4mFD, 'http_dash_segments': DashSegmentsFD, 'ism': IsmFD, + 'niconico_dmc': NiconicoDmcFD, 'youtube_live_chat_replay': YoutubeLiveChatReplayFD, } diff --git a/youtube_dlc/downloader/niconico.py b/youtube_dlc/downloader/niconico.py new file mode 100644 index 000000000..38476783f --- /dev/null +++ b/youtube_dlc/downloader/niconico.py @@ -0,0 +1,54 @@ +# coding: utf-8 +from __future__ import unicode_literals + +import threading + +from .common import FileDownloader +from ..downloader import _get_real_downloader +from ..extractor.niconico import NiconicoIE +from ..compat import compat_urllib_request + + +class NiconicoDmcFD(FileDownloader): + """ Downloading niconico douga from DMC with heartbeat """ + + FD_NAME = 'niconico_dmc' + + def real_download(self, filename, info_dict): + self.to_screen('[%s] Downloading from DMC' % self.FD_NAME) + + ie = NiconicoIE(self.ydl) + info_dict, heartbeat_info_dict = ie._get_heartbeat_info(info_dict) + + fd = _get_real_downloader(info_dict, params=self.params)(self.ydl, self.params) + + success = download_complete = False + timer = [None] + + heartbeat_lock = threading.Lock() + heartbeat_url = heartbeat_info_dict['url'] + heartbeat_data = heartbeat_info_dict['data'] + heartbeat_interval = heartbeat_info_dict.get('interval', 30) + self.to_screen('[%s] Heartbeat with %s second interval...' % (self.FD_NAME, heartbeat_interval)) + + def heartbeat(): + try: + compat_urllib_request.urlopen(url=heartbeat_url, data=heartbeat_data.encode()) + except Exception: + self.to_screen('[%s] Heartbeat failed' % self.FD_NAME) + + with heartbeat_lock: + if not download_complete: + timer[0] = threading.Timer(heartbeat_interval, heartbeat) + timer[0].start() + + try: + heartbeat() + success = fd.real_download(filename, info_dict) + finally: + if heartbeat_lock: + with heartbeat_lock: + timer[0].cancel() + download_complete = True + + return success diff --git a/youtube_dlc/extractor/niconico.py b/youtube_dlc/extractor/niconico.py index a85fc3d5c..632b9efcc 100644 --- a/youtube_dlc/extractor/niconico.py +++ b/youtube_dlc/extractor/niconico.py @@ -1,25 +1,25 @@ # coding: utf-8 from __future__ import unicode_literals -import datetime -import functools +import re import json -import math +import datetime from .common import InfoExtractor +from ..postprocessor.ffmpeg import FFmpegPostProcessor from ..compat import ( compat_parse_qs, compat_urllib_parse_urlparse, ) from ..utils import ( - determine_ext, dict_get, ExtractorError, - float_or_none, - InAdvancePagedList, int_or_none, + float_or_none, + OnDemandPagedList, parse_duration, parse_iso8601, + PostProcessingError, remove_start, try_get, unified_timestamp, @@ -191,37 +191,87 @@ class NiconicoIE(InfoExtractor): self._downloader.report_warning('unable to log in: bad username or password') return login_ok - def _extract_format_for_quality(self, api_data, video_id, audio_quality, video_quality): - def yesno(boolean): - return 'yes' if boolean else 'no' + def _get_heartbeat_info(self, info_dict): - session_api_data = api_data['video']['dmcInfo']['session_api'] - session_api_endpoint = session_api_data['urls'][0] + video_id, video_src_id, audio_src_id = info_dict['url'].split(':')[1].split('/') - format_id = '-'.join(map(lambda s: remove_start(s['id'], 'archive_'), [video_quality, audio_quality])) + # Get video webpage for API data. + webpage, handle = self._download_webpage_handle( + 'http://www.nicovideo.jp/watch/' + video_id, video_id) + + api_data = self._parse_json(self._html_search_regex( + 'data-api-data="([^"]+)"', webpage, + 'API data', default='{}'), video_id) + + session_api_data = try_get(api_data, lambda x: x['video']['dmcInfo']['session_api']) + session_api_endpoint = try_get(session_api_data, lambda x: x['urls'][0]) + + # ping + self._download_json( + 'https://nvapi.nicovideo.jp/v1/2ab0cbaa/watch', video_id, + query={'t': try_get(api_data, lambda x: x['video']['dmcInfo']['tracking_id'])}, + headers={ + 'Origin': 'https://www.nicovideo.jp', + 'Referer': 'https://www.nicovideo.jp/watch/' + video_id, + 'X-Frontend-Id': '6', + 'X-Frontend-Version': '0' + }) + + yesno = lambda x: 'yes' if x else 'no' + + # m3u8 (encryption) + if 'encryption' in try_get(api_data, lambda x: x['video']['dmcInfo']) or {}: + protocol = 'm3u8' + session_api_http_parameters = { + 'parameters': { + 'hls_parameters': { + 'encryption': { + 'hls_encryption_v1': { + 'encrypted_key': try_get(api_data, lambda x: x['video']['dmcInfo']['encryption']['hls_encryption_v1']['encrypted_key']), + 'key_uri': try_get(api_data, lambda x: x['video']['dmcInfo']['encryption']['hls_encryption_v1']['key_uri']) + } + }, + 'transfer_preset': '', + 'use_ssl': yesno(session_api_endpoint['is_ssl']), + 'use_well_known_port': yesno(session_api_endpoint['is_well_known_port']), + 'segment_duration': 6000 + } + } + } + # http + else: + protocol = 'http' + session_api_http_parameters = { + 'parameters': { + 'http_output_download_parameters': { + 'use_ssl': yesno(session_api_endpoint['is_ssl']), + 'use_well_known_port': yesno(session_api_endpoint['is_well_known_port']), + } + } + } session_response = self._download_json( session_api_endpoint['url'], video_id, query={'_format': 'json'}, headers={'Content-Type': 'application/json'}, - note='Downloading JSON metadata for %s' % format_id, + note='Downloading JSON metadata for %s' % info_dict['format_id'], data=json.dumps({ 'session': { 'client_info': { - 'player_id': session_api_data['player_id'], + 'player_id': session_api_data.get('player_id'), }, 'content_auth': { - 'auth_type': session_api_data['auth_types'][session_api_data['protocols'][0]], - 'content_key_timeout': session_api_data['content_key_timeout'], + 'auth_type': try_get(session_api_data, lambda x: x['auth_types'][session_api_data['protocols'][0]]), + 'content_key_timeout': session_api_data.get('content_key_timeout'), 'service_id': 'nicovideo', - 'service_user_id': session_api_data['service_user_id'] + 'service_user_id': session_api_data.get('service_user_id') }, - 'content_id': session_api_data['content_id'], + 'content_id': session_api_data.get('content_id'), 'content_src_id_sets': [{ 'content_src_ids': [{ 'src_id_to_mux': { - 'audio_src_ids': [audio_quality['id']], - 'video_src_ids': [video_quality['id']], + 'audio_src_ids': [audio_src_id], + 'video_src_ids': [video_src_id], } }] }], @@ -229,52 +279,78 @@ class NiconicoIE(InfoExtractor): 'content_uri': '', 'keep_method': { 'heartbeat': { - 'lifetime': session_api_data['heartbeat_lifetime'] + 'lifetime': session_api_data.get('heartbeat_lifetime') } }, - 'priority': session_api_data['priority'], + 'priority': session_api_data.get('priority'), 'protocol': { 'name': 'http', 'parameters': { - 'http_parameters': { - 'parameters': { - 'http_output_download_parameters': { - 'use_ssl': yesno(session_api_endpoint['is_ssl']), - 'use_well_known_port': yesno(session_api_endpoint['is_well_known_port']), - } - } - } + 'http_parameters': session_api_http_parameters } }, - 'recipe_id': session_api_data['recipe_id'], + 'recipe_id': session_api_data.get('recipe_id'), 'session_operation_auth': { 'session_operation_auth_by_signature': { - 'signature': session_api_data['signature'], - 'token': session_api_data['token'], + 'signature': session_api_data.get('signature'), + 'token': session_api_data.get('token'), } }, 'timing_constraint': 'unlimited' } }).encode()) - resolution = video_quality.get('resolution', {}) + info_dict['url'] = session_response['data']['session']['content_uri'] + info_dict['protocol'] = protocol + + # get heartbeat info + heartbeat_info_dict = { + 'url': session_api_endpoint['url'] + '/' + session_response['data']['session']['id'] + '?_format=json&_method=PUT', + 'data': json.dumps(session_response['data']), + # interval, convert milliseconds to seconds, then halve to make a buffer. + 'interval': float_or_none(session_api_data.get('heartbeat_lifetime'), scale=2000), + } + + return info_dict, heartbeat_info_dict + + def _extract_format_for_quality(self, api_data, video_id, audio_quality, video_quality): + def parse_format_id(id_code): + mobj = re.match(r'''(?x) + (?:archive_)? + (?:(?P[^_]+)_)? + (?:(?P
[\d]+)kbps_)? + (?:(?P[\d+]+)p_)? + ''', '%s_' % id_code) + return mobj.groupdict() if mobj else {} + + protocol = 'niconico_dmc' + format_id = '-'.join(map(lambda s: remove_start(s['id'], 'archive_'), [video_quality, audio_quality])) + vdict = parse_format_id(video_quality['id']) + adict = parse_format_id(audio_quality['id']) + resolution = video_quality.get('resolution', {'height': vdict.get('res')}) return { - 'url': session_response['data']['session']['content_uri'], + 'url': '%s:%s/%s/%s' % (protocol, video_id, video_quality['id'], audio_quality['id']), 'format_id': format_id, 'ext': 'mp4', # Session API are used in HTML5, which always serves mp4 - 'abr': float_or_none(audio_quality.get('bitrate'), 1000), - 'vbr': float_or_none(video_quality.get('bitrate'), 1000), - 'height': resolution.get('height'), - 'width': resolution.get('width'), + 'vcodec': vdict.get('codec'), + 'acodec': adict.get('codec'), + 'vbr': float_or_none(video_quality.get('bitrate'), 1000) or float_or_none(vdict.get('br')), + 'abr': float_or_none(audio_quality.get('bitrate'), 1000) or float_or_none(adict.get('br')), + 'height': int_or_none(resolution.get('height', vdict.get('res'))), + 'width': int_or_none(resolution.get('width')), + 'quality': -2 if 'low' in format_id else -1, # Default quality value is -1 + 'protocol': protocol, + 'http_headers': { + 'Origin': 'https://www.nicovideo.jp', + 'Referer': 'https://www.nicovideo.jp/watch/' + video_id, + } } def _real_extract(self, url): video_id = self._match_id(url) - # Get video webpage. We are not actually interested in it for normal - # cases, but need the cookies in order to be able to download the - # info webpage + # Get video webpage for API data. webpage, handle = self._download_webpage_handle( 'http://www.nicovideo.jp/watch/' + video_id, video_id) if video_id.startswith('so'): @@ -284,80 +360,134 @@ class NiconicoIE(InfoExtractor): 'data-api-data="([^"]+)"', webpage, 'API data', default='{}'), video_id) - def _format_id_from_url(video_url): - return 'economy' if video_real_url.endswith('low') else 'normal' + def get_video_info_web(items): + return dict_get(api_data['video'], items) + + # Get video info + video_info_xml = self._download_xml( + 'http://ext.nicovideo.jp/api/getthumbinfo/' + video_id, + video_id, note='Downloading video info page') + + def get_video_info_xml(items): + if not isinstance(items, list): + items = [items] + for item in items: + ret = xpath_text(video_info_xml, './/' + item) + if ret: + return ret + + if get_video_info_xml('error'): + error_code = get_video_info_xml('code') + + if error_code == 'DELETED': + raise ExtractorError('The video has been deleted.', + expected=True) + elif error_code == 'NOT_FOUND': + raise ExtractorError('The video is not found.', + expected=True) + elif error_code == 'COMMUNITY': + self.to_screen('%s: The video is community members only.' % video_id) + else: + raise ExtractorError('%s reports error: %s' % (self.IE_NAME, error_code)) + + # Start extracting video formats + formats = [] + + # Get HTML5 videos info + try: + dmc_info = api_data['video']['dmcInfo'] + except KeyError: + raise ExtractorError('The video can\'t downloaded.', + expected=True) + + quality_info = dmc_info.get('quality') + for audio_quality in quality_info.get('audios') or {}: + for video_quality in quality_info.get('videos') or {}: + if not audio_quality.get('available') or not video_quality.get('available'): + continue + formats.append(self._extract_format_for_quality( + api_data, video_id, audio_quality, video_quality)) + + # Get flv/swf info + video_real_url = try_get(api_data, lambda x: x['video']['smileInfo']['url']) + is_economy = video_real_url.endswith('low') + + if is_economy: + self.report_warning('Site is currently in economy mode! You will only have access to lower quality streams') + + # Invoking ffprobe to determine resolution + pp = FFmpegPostProcessor(self._downloader) + cookies = self._get_cookies('https://nicovideo.jp').output(header='', sep='; path=/; domain=nicovideo.jp;\n') + + self.to_screen('%s: %s' % (video_id, 'Checking smile format with ffprobe')) try: - video_real_url = api_data['video']['smileInfo']['url'] - except KeyError: # Flash videos - # Get flv info - flv_info_webpage = self._download_webpage( - 'http://flapi.nicovideo.jp/api/getflv/' + video_id + '?as3=1', - video_id, 'Downloading flv info') + metadata = pp.get_metadata_object(video_real_url, ['-cookies', cookies]) + except PostProcessingError as err: + raise ExtractorError(err.msg, expected=True) - flv_info = compat_parse_qs(flv_info_webpage) - if 'url' not in flv_info: - if 'deleted' in flv_info: - raise ExtractorError('The video has been deleted.', - expected=True) - elif 'closed' in flv_info: - raise ExtractorError('Niconico videos now require logging in', - expected=True) - elif 'error' in flv_info: - raise ExtractorError('%s reports error: %s' % ( - self.IE_NAME, flv_info['error'][0]), expected=True) - else: - raise ExtractorError('Unable to find video URL') + v_stream = a_stream = {} - video_info_xml = self._download_xml( - 'http://ext.nicovideo.jp/api/getthumbinfo/' + video_id, - video_id, note='Downloading video info page') + # Some complex swf files doesn't have video stream (e.g. nm4809023) + for stream in metadata['streams']: + if stream['codec_type'] == 'video': + v_stream = stream + elif stream['codec_type'] == 'audio': + a_stream = stream - def get_video_info(items): - if not isinstance(items, list): - items = [items] - for item in items: - ret = xpath_text(video_info_xml, './/' + item) - if ret: - return ret + # Community restricted videos seem to have issues with the thumb API not returning anything at all + filesize = int( + (get_video_info_xml('size_high') if not is_economy else get_video_info_xml('size_low')) + or metadata['format']['size'] + ) + extension = ( + get_video_info_xml('movie_type') + or 'mp4' if 'mp4' in metadata['format']['format_name'] else metadata['format']['format_name'] + ) - video_real_url = flv_info['url'][0] + # 'creation_time' tag on video stream of re-encoded SMILEVIDEO mp4 files are '1970-01-01T00:00:00.000000Z'. + timestamp = ( + parse_iso8601(get_video_info_web('first_retrieve')) + or unified_timestamp(get_video_info_web('postedDateTime')) + ) + metadata_timestamp = ( + parse_iso8601(try_get(v_stream, lambda x: x['tags']['creation_time'])) + or timestamp if extension != 'mp4' else 0 + ) - extension = get_video_info('movie_type') - if not extension: - extension = determine_ext(video_real_url) + # According to compconf, smile videos from pre-2017 are always better quality than their DMC counterparts + smile_threshold_timestamp = parse_iso8601('2016-12-08T00:00:00+09:00') - formats = [{ + is_source = timestamp < smile_threshold_timestamp or metadata_timestamp > 0 + + # If movie file size is unstable, old server movie is not source movie. + if filesize > 1: + formats.append({ 'url': video_real_url, + 'format_id': 'smile' if not is_economy else 'smile_low', + 'format_note': 'SMILEVIDEO source' if not is_economy else 'SMILEVIDEO low quality', 'ext': extension, - 'format_id': _format_id_from_url(video_real_url), - }] - else: - formats = [] + 'container': extension, + 'vcodec': v_stream.get('codec_name'), + 'acodec': a_stream.get('codec_name'), + # Some complex swf files doesn't have total bit rate metadata (e.g. nm6049209) + 'tbr': int_or_none(metadata['format'].get('bit_rate'), scale=1000), + 'vbr': int_or_none(v_stream.get('bit_rate'), scale=1000), + 'abr': int_or_none(a_stream.get('bit_rate'), scale=1000), + 'height': int_or_none(v_stream.get('height')), + 'width': int_or_none(v_stream.get('width')), + 'source_preference': 5 if not is_economy else -2, + 'quality': 5 if is_source and not is_economy else None, + 'filesize': filesize + }) - dmc_info = api_data['video'].get('dmcInfo') - if dmc_info: # "New" HTML5 videos - quality_info = dmc_info['quality'] - for audio_quality in quality_info['audios']: - for video_quality in quality_info['videos']: - if not audio_quality['available'] or not video_quality['available']: - continue - formats.append(self._extract_format_for_quality( - api_data, video_id, audio_quality, video_quality)) + if len(formats) == 0: + raise ExtractorError('Unable to find video info.') - self._sort_formats(formats) - else: # "Old" HTML5 videos - formats = [{ - 'url': video_real_url, - 'ext': 'mp4', - 'format_id': _format_id_from_url(video_real_url), - }] - - def get_video_info(items): - return dict_get(api_data['video'], items) + self._sort_formats(formats) # Start extracting information - title = get_video_info('title') + title = get_video_info_web('originalTitle') if not title: title = self._og_search_title(webpage, default=None) if not title: @@ -372,14 +502,13 @@ class NiconicoIE(InfoExtractor): video_detail = watch_api_data.get('videoDetail', {}) thumbnail = ( - get_video_info(['thumbnail_url', 'thumbnailURL']) + self._html_search_regex(r'', webpage, 'thumbnail data', default=None) + or get_video_info_web(['thumbnail_url', 'largeThumbnailURL', 'thumbnailURL']) or self._html_search_meta('image', webpage, 'thumbnail', default=None) or video_detail.get('thumbnail')) - description = get_video_info('description') + description = get_video_info_web('description') - timestamp = (parse_iso8601(get_video_info('first_retrieve')) - or unified_timestamp(get_video_info('postedDateTime'))) if not timestamp: match = self._html_search_meta('datePublished', webpage, 'date published', default=None) if match: @@ -389,7 +518,7 @@ class NiconicoIE(InfoExtractor): video_detail['postedAt'].replace('/', '-'), delimiter=' ', timezone=datetime.timedelta(hours=9)) - view_count = int_or_none(get_video_info(['view_counter', 'viewCount'])) + view_count = int_or_none(get_video_info_web(['view_counter', 'viewCount'])) if not view_count: match = self._html_search_regex( r'>Views: ]*>([^<]+)', @@ -398,7 +527,7 @@ class NiconicoIE(InfoExtractor): view_count = int_or_none(match.replace(',', '')) view_count = view_count or video_detail.get('viewCount') - comment_count = (int_or_none(get_video_info('comment_num')) + comment_count = (int_or_none(get_video_info_web('comment_num')) or video_detail.get('commentCount') or try_get(api_data, lambda x: x['thread']['commentCount'])) if not comment_count: @@ -409,19 +538,19 @@ class NiconicoIE(InfoExtractor): comment_count = int_or_none(match.replace(',', '')) duration = (parse_duration( - get_video_info('length') + get_video_info_web('length') or self._html_search_meta( 'video:duration', webpage, 'video duration', default=None)) or video_detail.get('length') - or get_video_info('duration')) + or get_video_info_web('duration')) - webpage_url = get_video_info('watch_url') or url + webpage_url = get_video_info_web('watch_url') or url # Note: cannot use api_data.get('owner', {}) because owner may be set to "null" # in the JSON, which will cause None to be returned instead of {}. owner = try_get(api_data, lambda x: x.get('owner'), dict) or {} - uploader_id = get_video_info(['ch_id', 'user_id']) or owner.get('id') - uploader = get_video_info(['ch_name', 'user_nickname']) or owner.get('nickname') + uploader_id = get_video_info_web(['ch_id', 'user_id']) or owner.get('id') + uploader = get_video_info_web(['ch_name', 'user_nickname']) or owner.get('nickname') return { 'id': video_id, @@ -456,60 +585,45 @@ class NiconicoPlaylistIE(InfoExtractor): 'url': 'https://www.nicovideo.jp/user/805442/mylist/27411728', 'only_matching': True, }] - _PAGE_SIZE = 100 - - def _call_api(self, list_id, resource, query): - return self._download_json( - 'https://nvapi.nicovideo.jp/v2/mylists/' + list_id, list_id, - 'Downloading %s JSON metatdata' % resource, query=query, - headers={'X-Frontend-Id': 6})['data']['mylist'] - - def _parse_owner(self, item): - owner = item.get('owner') or {} - if owner: - return { - 'uploader': owner.get('name'), - 'uploader_id': owner.get('id'), - } - return {} - - def _fetch_page(self, list_id, page): - page += 1 - items = self._call_api(list_id, 'page %d' % page, { - 'page': page, - 'pageSize': self._PAGE_SIZE, - })['items'] - for item in items: - video = item.get('video') or {} - video_id = video.get('id') - if not video_id: - continue - count = video.get('count') or {} - get_count = lambda x: int_or_none(count.get(x)) - info = { - '_type': 'url', - 'id': video_id, - 'title': video.get('title'), - 'url': 'https://www.nicovideo.jp/watch/' + video_id, - 'description': video.get('shortDescription'), - 'duration': int_or_none(video.get('duration')), - 'view_count': get_count('view'), - 'comment_count': get_count('comment'), - 'ie_key': NiconicoIE.ie_key(), - } - info.update(self._parse_owner(video)) - yield info def _real_extract(self, url): list_id = self._match_id(url) - mylist = self._call_api(list_id, 'list', { - 'pageSize': 1, - }) - entries = InAdvancePagedList( - functools.partial(self._fetch_page, list_id), - math.ceil(mylist['totalItemCount'] / self._PAGE_SIZE), - self._PAGE_SIZE) - result = self.playlist_result( - entries, list_id, mylist.get('name'), mylist.get('description')) - result.update(self._parse_owner(mylist)) - return result + webpage = self._download_webpage(url, list_id) + + header = self._parse_json(self._html_search_regex( + r'data-common-header="([^"]+)"', webpage, + 'webpage header'), list_id) + frontendId = header.get('initConfig').get('frontendId') + frontendVersion = header.get('initConfig').get('frontendVersion') + + def get_page_data(pagenum, pagesize): + return self._download_json( + 'http://nvapi.nicovideo.jp/v2/mylists/' + list_id, list_id, + query={'page': 1 + pagenum, 'pageSize': pagesize}, + headers={ + 'X-Frontend-Id': frontendId, + 'X-Frontend-Version': frontendVersion, + }).get('data').get('mylist') + + data = get_page_data(0, 1) + title = data.get('name') + description = data.get('description') + uploader = data.get('owner').get('name') + uploader_id = data.get('owner').get('id') + + def pagefunc(pagenum): + data = get_page_data(pagenum, 25) + return ({ + '_type': 'url', + 'url': 'http://www.nicovideo.jp/watch/' + item.get('watchId'), + } for item in data.get('items')) + + return { + '_type': 'playlist', + 'id': list_id, + 'title': title, + 'description': description, + 'uploader': uploader, + 'uploader_id': uploader_id, + 'entries': OnDemandPagedList(pagefunc, 25), + }