diff --git a/yt_dlp/extractor/common.py b/yt_dlp/extractor/common.py
index 04d4c0733a..d8bb211370 100644
--- a/yt_dlp/extractor/common.py
+++ b/yt_dlp/extractor/common.py
@@ -1307,6 +1307,10 @@ def _og_search_video_url(self, html, name='video url', secure=True, **kargs):
def _og_search_url(self, html, **kargs):
return self._og_search_property('url', html, **kargs)
+ def _html_extract_title(self, html, name, **kwargs):
+ return self._html_search_regex(
+ r'(?s)
(.*?)', html, name, **kwargs)
+
def _html_search_meta(self, name, html, display_name=None, fatal=False, **kwargs):
name = variadic(name)
if display_name is None:
diff --git a/yt_dlp/extractor/extractors.py b/yt_dlp/extractor/extractors.py
index 15bc74915c..7d4262acf1 100644
--- a/yt_dlp/extractor/extractors.py
+++ b/yt_dlp/extractor/extractors.py
@@ -994,6 +994,9 @@
from .nhk import (
NhkVodIE,
NhkVodProgramIE,
+ NhkForSchoolBangumiIE,
+ NhkForSchoolSubjectIE,
+ NhkForSchoolProgramListIE,
)
from .nhl import NHLIE
from .nick import (
diff --git a/yt_dlp/extractor/nhk.py b/yt_dlp/extractor/nhk.py
index 4998fed831..626c6379b3 100644
--- a/yt_dlp/extractor/nhk.py
+++ b/yt_dlp/extractor/nhk.py
@@ -1,8 +1,15 @@
from __future__ import unicode_literals
+import re
from .common import InfoExtractor
-from ..utils import urljoin
+from ..utils import (
+ parse_duration,
+ traverse_obj,
+ unescapeHTML,
+ unified_timestamp,
+ urljoin
+)
class NhkBaseIE(InfoExtractor):
@@ -176,3 +183,143 @@ def _real_extract(self, url):
program_title = entries[0].get('series')
return self.playlist_result(entries, program_id, program_title)
+
+
+class NhkForSchoolBangumiIE(InfoExtractor):
+ _VALID_URL = r'https?://www2\.nhk\.or\.jp/school/movie/(?Pbangumi|clip)\.cgi\?das_id=(?P[a-zA-Z0-9_-]+)'
+ _TESTS = [{
+ 'url': 'https://www2.nhk.or.jp/school/movie/bangumi.cgi?das_id=D0005150191_00000',
+ 'info_dict': {
+ 'id': 'D0005150191_00003',
+ 'title': 'にている かな',
+ 'duration': 599.999,
+ 'timestamp': 1396414800,
+
+ 'upload_date': '20140402',
+ 'ext': 'mp4',
+
+ 'chapters': 'count:12'
+ },
+ 'params': {
+ # m3u8 download
+ 'skip_download': True,
+ },
+ }]
+
+ def _real_extract(self, url):
+ program_type, video_id = self._match_valid_url(url).groups()
+
+ webpage = self._download_webpage(
+ f'https://www2.nhk.or.jp/school/movie/{program_type}.cgi?das_id={video_id}', video_id)
+
+ # searches all variables
+ base_values = {g.group(1): g.group(2) for g in re.finditer(r'var\s+([a-zA-Z_]+)\s*=\s*"([^"]+?)";', webpage)}
+ # and programObj values too
+ program_values = {g.group(1): g.group(3) for g in re.finditer(r'(?:program|clip)Obj\.([a-zA-Z_]+)\s*=\s*(["\'])([^"]+?)\2;', webpage)}
+ # extract all chapters
+ chapter_durations = [parse_duration(g.group(1)) for g in re.finditer(r'chapterTime\.push\(\'([0-9:]+?)\'\);', webpage)]
+ chapter_titles = [' '.join([g.group(1) or '', unescapeHTML(g.group(2))]).strip() for g in re.finditer(r'(scene\s*\d+)?([^<]+?)
', webpage)]
+
+ # this is how player_core.js is actually doing (!)
+ version = base_values.get('r_version') or program_values.get('version')
+ if version:
+ video_id = f'{video_id.split("_")[0]}_{version}'
+
+ formats = self._extract_m3u8_formats(
+ f'https://nhks-vh.akamaihd.net/i/das/{video_id[0:8]}/{video_id}_V_000.f4v/master.m3u8',
+ video_id, ext='mp4', m3u8_id='hls')
+ self._sort_formats(formats)
+
+ duration = parse_duration(base_values.get('r_duration'))
+
+ chapters = None
+ if chapter_durations and chapter_titles and len(chapter_durations) == len(chapter_titles):
+ start_time = chapter_durations
+ end_time = chapter_durations[1:] + [duration]
+ chapters = [{
+ 'start_time': s,
+ 'end_time': e,
+ 'title': t,
+ } for s, e, t in zip(start_time, end_time, chapter_titles)]
+
+ return {
+ 'id': video_id,
+ 'title': program_values.get('name'),
+ 'duration': parse_duration(base_values.get('r_duration')),
+ 'timestamp': unified_timestamp(base_values['r_upload']),
+ 'formats': formats,
+ 'chapters': chapters,
+ }
+
+
+class NhkForSchoolSubjectIE(InfoExtractor):
+ IE_DESC = 'Portal page for each school subjects, like Japanese (kokugo, 国語) or math (sansuu/suugaku or 算数・数学)'
+ KNOWN_SUBJECTS = (
+ 'rika', 'syakai', 'kokugo',
+ 'sansuu', 'seikatsu', 'doutoku',
+ 'ongaku', 'taiiku', 'zukou',
+ 'gijutsu', 'katei', 'sougou',
+ 'eigo', 'tokkatsu',
+ 'tokushi', 'sonota',
+ )
+ _VALID_URL = r'https?://www\.nhk\.or\.jp/school/(?P%s)/?(?:[\?#].*)?$' % '|'.join(re.escape(s) for s in KNOWN_SUBJECTS)
+
+ _TESTS = [{
+ 'url': 'https://www.nhk.or.jp/school/sougou/',
+ 'info_dict': {
+ 'id': 'sougou',
+ 'title': '総合的な学習の時間',
+ },
+ 'playlist_mincount': 16,
+ }, {
+ 'url': 'https://www.nhk.or.jp/school/rika/',
+ 'info_dict': {
+ 'id': 'rika',
+ 'title': '理科',
+ },
+ 'playlist_mincount': 15,
+ }]
+
+ def _real_extract(self, url):
+ subject_id = self._match_id(url)
+ webpage = self._download_webpage(url, subject_id)
+
+ return self.playlist_from_matches(
+ re.finditer(rf'href="((?:https?://www\.nhk\.or\.jp)?/school/{re.escape(subject_id)}/[^/]+/)"', webpage),
+ subject_id,
+ self._html_search_regex(r'(?s)\s*\s*([^<]+?)', webpage, 'title', fatal=False),
+ lambda g: urljoin(url, g.group(1)))
+
+
+class NhkForSchoolProgramListIE(InfoExtractor):
+ _VALID_URL = r'https?://www\.nhk\.or\.jp/school/(?P(?:%s)/[a-zA-Z0-9_-]+)' % (
+ '|'.join(re.escape(s) for s in NhkForSchoolSubjectIE.KNOWN_SUBJECTS)
+ )
+ _TESTS = [{
+ 'url': 'https://www.nhk.or.jp/school/sougou/q/',
+ 'info_dict': {
+ 'id': 'sougou/q',
+ 'title': 'Q~こどものための哲学',
+ },
+ 'playlist_mincount': 20,
+ }]
+
+ def _real_extract(self, url):
+ program_id = self._match_id(url)
+
+ webpage = self._download_webpage(f'https://www.nhk.or.jp/school/{program_id}/', program_id)
+
+ title = self._og_search_title(webpage, fatal=False) or self._html_extract_title(webpage, fatal=False) or self._html_search_regex(r'([^<]+?)とは?\s*
', webpage, 'title', fatal=False)
+ title = re.sub(r'\s*\|\s*NHK\s+for\s+School\s*$', '', title) if title else None
+ description = self._html_search_regex(
+ r'(?s)\s*
[^<]+
',
+ webpage, 'description', fatal=False, group=0)
+
+ bangumi_list = self._download_json(
+ f'https://www.nhk.or.jp/school/{program_id}/meta/program.json', program_id)
+ # they're always bangumi
+ bangumis = [
+ self.url_result(f'https://www2.nhk.or.jp/school/movie/bangumi.cgi?das_id={x}')
+ for x in traverse_obj(bangumi_list, ('part', ..., 'part-video-dasid')) or []]
+
+ return self.playlist_result(bangumis, program_id, title, description)