diff --git a/yt_dlp/extractor/_extractors.py b/yt_dlp/extractor/_extractors.py
index abba5bfa2..aacb08fb6 100644
--- a/yt_dlp/extractor/_extractors.py
+++ b/yt_dlp/extractor/_extractors.py
@@ -905,6 +905,7 @@
 from .kth import KTHIE
 from .krasview import KrasViewIE
 from .ku6 import Ku6IE
+from .kukululive import KukuluLiveIE
 from .kusi import KUSIIE
 from .kuwo import (
     KuwoIE,
diff --git a/yt_dlp/extractor/kukululive.py b/yt_dlp/extractor/kukululive.py
new file mode 100644
index 000000000..86ab5d40e
--- /dev/null
+++ b/yt_dlp/extractor/kukululive.py
@@ -0,0 +1,140 @@
+import urllib.parse
+
+from .common import InfoExtractor
+from ..utils import (
+    ExtractorError,
+    clean_html,
+    filter_dict,
+    get_element_by_id,
+    int_or_none,
+    join_nonempty,
+    js_to_json,
+    qualities,
+    url_or_none,
+    urljoin,
+)
+from ..utils.traversal import traverse_obj
+
+
+class KukuluLiveIE(InfoExtractor):
+    _VALID_URL = r'https?://live\.erinn\.biz/live\.php\?h(?P<id>\d+)'
+    _TESTS = [{
+        'url': 'https://live.erinn.biz/live.php?h675134569',
+        'md5': 'e380fa6a47fc703d91cea913ab44ec2e',
+        'info_dict': {
+            'id': '675134569',
+            'ext': 'mp4',
+            'title': 'プロセカ',
+            'description': 'テストも兼ねたプロセカ配信。',
+            'timestamp': 1702689148,
+            'upload_date': '20231216',
+            'thumbnail': r're:^https?://.*',
+        },
+    }, {
+        'url': 'https://live.erinn.biz/live.php?h102338092',
+        'md5': 'dcf5167a934b1c60333461e13a81a6e2',
+        'info_dict': {
+            'id': '102338092',
+            'ext': 'mp4',
+            'title': 'Among Usで遊びます！！',
+            'description': 'VTuberになりましたねんねこ㌨ですよろしくお願いします',
+            'timestamp': 1704603118,
+            'upload_date': '20240107',
+            'thumbnail': r're:^https?://.*',
+        },
+    }, {
+        'url': 'https://live.erinn.biz/live.php?h878049531',
+        'only_matching': True,
+    }]
+
+    def _get_quality_meta(self, video_id, desc, code, force_h264=None):
+        desc += ' (force_h264)' if force_h264 else ''
+        qs = self._download_webpage(
+            'https://live.erinn.biz/live.player.fplayer.php', video_id,
+            f'Downloading {desc} quality metadata', f'Unable to download {desc} quality metadata',
+            query=filter_dict({
+                'hash': video_id,
+                'action': f'get{code}liveByAjax',
+                'force_h264': force_h264,
+            }))
+        return urllib.parse.parse_qs(qs)
+
+    def _add_quality_formats(self, formats, quality_meta):
+        vcodec = traverse_obj(quality_meta, ('vcodec', 0, {str}))
+        quality = traverse_obj(quality_meta, ('now_quality', 0, {str}))
+        quality_priority = qualities(('low', 'h264', 'high'))(quality)
+        if traverse_obj(quality_meta, ('hlsaddr', 0, {url_or_none})):
+            formats.append({
+                'format_id': quality,
+                'url': quality_meta['hlsaddr'][0],
+                'ext': 'mp4',
+                'vcodec': vcodec,
+                'quality': quality_priority,
+            })
+        if traverse_obj(quality_meta, ('hlsaddr_audioonly', 0, {url_or_none})):
+            formats.append({
+                'format_id': join_nonempty(quality, 'audioonly'),
+                'url': quality_meta['hlsaddr_audioonly'][0],
+                'ext': 'm4a',
+                'vcodec': 'none',
+                'quality': quality_priority,
+            })
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        html = self._download_webpage(url, video_id)
+
+        if '>タイムシフトが見つかりませんでした。<' in html:
+            raise ExtractorError('This stream has expired', expected=True)
+
+        title = clean_html(
+            get_element_by_id('livetitle', html.replace('<SPAN', '<span').replace('SPAN>', 'span>')))
+        description = self._html_search_meta('Description', html)
+        thumbnail = self._html_search_meta(['og:image', 'twitter:image'], html)
+
+        if self._search_regex(r'(var\s+timeshift\s*=\s*false)', html, 'is livestream', default=False):
+            formats = []
+            for (desc, code) in [('high', 'Z'), ('low', 'ForceLow')]:
+                quality_meta = self._get_quality_meta(video_id, desc, code)
+                self._add_quality_formats(formats, quality_meta)
+                if desc == 'high' and traverse_obj(quality_meta, ('vcodec', 0)) == 'HEVC':
+                    self._add_quality_formats(
+                        formats, self._get_quality_meta(video_id, desc, code, force_h264='1'))
+
+            return {
+                'id': video_id,
+                'title': title,
+                'description': description,
+                'thumbnail': thumbnail,
+                'is_live': True,
+                'formats': formats,
+            }
+
+        # VOD extraction
+        player_html = self._download_webpage(
+            'https://live.erinn.biz/live.timeshift.fplayer.php', video_id,
+            'Downloading player html', 'Unable to download player html', query={'hash': video_id})
+
+        sources = traverse_obj(self._search_json(
+            r'var\s+fplayer_source\s*=', player_html, 'stream data', video_id,
+            contains_pattern=r'\[(?s:.+)\]', transform_source=js_to_json), lambda _, v: v['file'])
+
+        def entries(segments, playlist=True):
+            for i, segment in enumerate(segments, 1):
+                yield {
+                    'id': f'{video_id}_{i}' if playlist else video_id,
+                    'title': f'{title} (Part {i})' if playlist else title,
+                    'description': description,
+                    'timestamp': traverse_obj(segment, ('time_start', {int_or_none})),
+                    'thumbnail': thumbnail,
+                    'formats': [{
+                        'url': urljoin('https://live.erinn.biz', segment['file']),
+                        'ext': 'mp4',
+                        'protocol': 'm3u8_native',
+                    }],
+                }
+
+        if len(sources) == 1:
+            return next(entries(sources, playlist=False))
+
+        return self.playlist_result(entries(sources), video_id, title, description, multi_video=True)