diff --git a/yt_dlp/extractor/archiveorg.py b/yt_dlp/extractor/archiveorg.py
index 3746c58fb7..02c39beb68 100644
--- a/yt_dlp/extractor/archiveorg.py
+++ b/yt_dlp/extractor/archiveorg.py
@@ -704,6 +704,24 @@ class YoutubeWebArchiveIE(InfoExtractor):
                 'thumbnail': 'https://web.archive.org/web/20160108040020if_/https://i.ytimg.com/vi/SQCom7wjGDs/maxresdefault.jpg',
                 'upload_date': '20160107',
             },
+        }, {
+            # dmuxed formats
+            'url': 'https://web.archive.org/web/20240922160632/https://www.youtube.com/watch?v=z7hzvTL3k1k',
+            'info_dict': {
+                'id': 'z7hzvTL3k1k',
+                'ext': 'webm',
+                'title': 'Praise the Lord and Pass the Ammunition (BARRXN REMIX)',
+                'description': 'md5:45dbf2c71c23b0734c8dfb82dd1e94b6',
+                'uploader': 'Barrxn',
+                'uploader_id': 'TheRockstar6086',
+                'uploader_url': 'https://www.youtube.com/user/TheRockstar6086',
+                'channel_id': 'UCjJPGUTtvR9uizmawn2ThqA',
+                'channel_url': 'https://www.youtube.com/channel/UCjJPGUTtvR9uizmawn2ThqA',
+                'duration': 125,
+                'thumbnail': r're:https?://.*\.(jpg|webp)',
+                'upload_date': '20201207',
+            },
+            'params': {'format': 'bv'},
         }, {
             'url': 'https://web.archive.org/web/http://www.youtube.com/watch?v=kH-G_aIBlFw',
             'only_matching': True,
@@ -1060,6 +1078,19 @@ class YoutubeWebArchiveIE(InfoExtractor):
         capture_dates.extend([self._OLDEST_CAPTURE_DATE, self._NEWEST_CAPTURE_DATE])
         return orderedSet(filter(None, capture_dates))
 
+    def _parse_fmt(self, fmt, extra_info=None):
+        format_id = traverse_obj(fmt, ('url', {parse_qs}, 'itag', 0))
+        return {
+            'format_id': format_id,
+            **self._FORMATS.get(format_id, {}),
+            **traverse_obj(fmt, {
+                'url': ('url', {lambda x: f'https://web.archive.org/web/2id_/{x}'}),
+                'ext': ('ext', {str}),
+                'filesize': ('url', {parse_qs}, 'clen', 0, {int_or_none}),
+            }),
+            **(extra_info or {}),
+        }
+
     def _real_extract(self, url):
         video_id, url_date, url_date_2 = self._match_valid_url(url).group('id', 'date', 'date2')
         url_date = url_date or url_date_2
@@ -1090,17 +1121,14 @@ class YoutubeWebArchiveIE(InfoExtractor):
         info['thumbnails'] = self._extract_thumbnails(video_id)
 
         formats = []
-        for fmt in traverse_obj(video_info, ('formats', lambda _, v: url_or_none(v['url']))):
-            format_id = traverse_obj(fmt, ('url', {parse_qs}, 'itag', 0))
-            formats.append({
-                'format_id': format_id,
-                **self._FORMATS.get(format_id, {}),
-                **traverse_obj(fmt, {
-                    'url': ('url', {lambda x: f'https://web.archive.org/web/2id_/{x}'}),
-                    'ext': ('ext', {str}),
-                    'filesize': ('url', {parse_qs}, 'clen', 0, {int_or_none}),
-                }),
-            })
+        if video_info.get('dmux'):
+            for vf in traverse_obj(video_info, ('formats', 'video', lambda _, v: url_or_none(v['url']))):
+                formats.append(self._parse_fmt(vf, {'acodec': 'none'}))
+            for af in traverse_obj(video_info, ('formats', 'audio', lambda _, v: url_or_none(v['url']))):
+                formats.append(self._parse_fmt(af, {'vcodec': 'none'}))
+        else:
+            for fmt in traverse_obj(video_info, ('formats', lambda _, v: url_or_none(v['url']))):
+                formats.append(self._parse_fmt(fmt))
         info['formats'] = formats
 
         return info