Repository: yt-dlp/yt-dlp

Issue:
Wrong MPD Parsing
### Checklist

- [ ] I'm reporting a bug unrelated to a specific site
- [x] I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
- [x] I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766), [the FAQ](https://github.com/yt-dlp/yt-dlp/wiki/FAQ), and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%3Aissue%20-label%3Aspam%20%20) for similar issues **including closed ones**. DO NOT post duplicates

### Provide a description that is worded well enough to be understood

expected direct URL: https://hses6.hotstar.com/videos/hotstarint/1260110227/v3/1666763886432/b43a7d0f406c8c62118a85d357b59afd/seg-audio_aac_1667295328367-te-mp4a-3.mp4

but it is creating: "https://hses6.hotstar.com/videos/hotstarint/1260110227/v3/1666763886432/b43a7d0f406c8c62118a85d357b59afd/master-a4a9627b83-1667404754661.mpd?hdnea=exp=1742744337~acl=%2fvideos%2fhotstarint%2f1260110227%2fv3%2f1666763886432%2fb43a7d0f406c8c62118a85d357b59afd%2a~hmac=a0aa2cb977d34a1576b7b4d71d108cf05fa097402d1c9923fc703e78a3fc1e0c&ttl=86400&type=free&acl=/videos/hotstarint/1260110227/v3/1666763886432/seg-audio_aac_1667295328367-te-mp4a-3.mp4"

as a result, it is downloading mpd again..  instead of audio/video

### Provide verbose output that clearly demonstrates the problem

- [x] Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
- [ ] If using API, add `'verbose': True` to `YoutubeDL` params instead
- [x] Copy the WHOLE output (starting with `[debug] Command-line config`) and insert it below

### Complete Verbose Output

```shell
[debug] Command-line config: ['https://hses6.hotstar.com/videos/hotstarint/1260110227/v3/1666763886432/b43a7d0f406c8c62118a85d357b59afd/master-a4a9627b83-1667404754661.mpd?hdnea=exp=1742744337~acl=%2fvideos%2fhotstarint%2f1260110227%2fv3%2f1666763886432%2fb43a7d0f406c8c62118a85d357b59afd%2a~hmac=a0aa2cb977d34a1576b7b4d71d108cf05fa097402d1c9923fc703e78a3fc1e0c&ttl=86400&type=free&acl=/videos/hotstarint/1260110227/v3/1666763886432/b43a7d0f406c8c62118a85d357b59afd', '-vU', '-f', 'ba', '-o', '1.mp4']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version stable@2025.03.21 from yt-dlp/yt-dlp [f36e4b6e6] (pip)
[debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.26100-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
[debug] exe versions: none
[debug] Optional libraries: Cryptodome-3.17, brotli-1.0.9, certifi-2022.12.07, mutagen-1.46.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.2, websockets-12.0 (unsupported)
[debug] Proxy map: {}
[debug] Request Handlers: urllib, requests
[debug] Plugin directories: none
[debug] Loaded 1847 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: stable@2025.03.21 from yt-dlp/yt-dlp
yt-dlp is up to date (stable@2025.03.21 from yt-dlp/yt-dlp)
[generic] Extracting URL: https://hses6.hotstar.com/videos/hotstarint/1260110227/v3/1666763886432/b43a7d0f406c8c62118a85d357b59afd/master-a4a9627b83-1667404754661.mpd?hdnea=exp=1742744337~acl=%2fvideos%2fhotstarint%2f1260110227%2fv3%2f1666763886432%2fb43a7d0f406c8c62118a85d357b59afd%2a~hmac=a0aa2cb977d34a1576b7b4d71d108cf05fa097402d1c9923fc703e78a3fc1e0c&ttl=86400&type=free&acl=/videos/hotstarint/1260110227/v3/1666763886432/b43a7d0f406c8c62118a85d357b59afd
[generic] b43a7d0f406c8c62118a85d357b59afd: Downloading webpage
WARNING: [generic] Falling back on generic information extractor
[generic] b43a7d0f406c8c62118a85d357b59afd: Extracting information
[debug] Identified a DASH manifest
[debug] Formats sorted by: hasvid, ie_pref, lang, quality, res, fps, hdr:12(7), vcodec, channels, acodec, size, br, asr, proto, vext, aext, hasaud, source, id
[info] b43a7d0f406c8c62118a85d357b59afd: Downloading 1 format(s): audio_aac_1667295328367-te-mp4a-3
[debug] Invoking http downloader on "https://hses6.hotstar.com/videos/hotstarint/1260110227/v3/1666763886432/b43a7d0f406c8c62118a85d357b59afd/master-a4a9627b83-1667404754661.mpd?hdnea=exp=1742744337~acl=%2fvideos%2fhotstarint%2f1260110227%2fv3%2f1666763886432%2fb43a7d0f406c8c62118a85d357b59afd%2a~hmac=a0aa2cb977d34a1576b7b4d71d108cf05fa097402d1c9923fc703e78a3fc1e0c&ttl=86400&type=free&acl=/videos/hotstarint/1260110227/v3/1666763886432/seg-audio_aac_1667295328367-te-mp4a-3.mp4"
[debug] File locking is not supported. Proceeding without locking
[download] Destination: 1.mp4
[download] 100% of   15.03KiB in 00:00:00 at 279.63KiB/s
```

Discussion:
fireattack: Sorry about unclean commit history. Should be fine after squash.
fireattack: I'm not sure how to write a test for this kind of thing. Please help.
bashonly: > I'm not sure how to write a test for this kind of thing. Please help.

Since we don't have a freely accessible example URL, I don't think there is anything we can add. PR is fine as-is IMO
dirkf: There are probably also places where `.rpartition('/')[2]` is being used instead of `url_basename()` (at one time: camtasia.py, bilibili.py). Presumably the URL strings processed in those extractors don't have, or haven't had, query strings containing path separators, or errors would have been reported.

Patch:
diff --git a/yt_dlp/extractor/_extractors.py b/yt_dlp/extractor/_extractors.py
index c56ec9df6..eb914d2eb 100644
--- a/yt_dlp/extractor/_extractors.py
+++ b/yt_dlp/extractor/_extractors.py
@@ -2392,6 +2392,12 @@
     VoxMediaIE,
     VoxMediaVolumeIE,
 )
+from .vrsquare import (
+    VrSquareChannelIE,
+    VrSquareIE,
+    VrSquareSearchIE,
+    VrSquareSectionIE,
+)
 from .vrt import (
     VRTIE,
     DagelijkseKostIE,
diff --git a/yt_dlp/extractor/generic.py b/yt_dlp/extractor/generic.py
index 67c224e50..c144069b3 100644
--- a/yt_dlp/extractor/generic.py
+++ b/yt_dlp/extractor/generic.py
@@ -16,6 +16,7 @@
     MEDIA_EXTENSIONS,
     ExtractorError,
     UnsupportedError,
+    base_url,
     determine_ext,
     determine_protocol,
     dict_get,
@@ -2531,7 +2532,7 @@ def _real_extract(self, url):
             elif re.match(r'(?i)^(?:{[^}]+})?MPD$', doc.tag):
                 info_dict['formats'], info_dict['subtitles'] = self._parse_mpd_formats_and_subtitles(
                     doc,
-                    mpd_base_url=full_response.url.rpartition('/')[0],
+                    mpd_base_url=base_url(full_response.url),
                     mpd_url=url)
                 info_dict['live_status'] = 'is_live' if doc.get('type') == 'dynamic' else None
                 self._extra_manifest_info(info_dict, url)
diff --git a/yt_dlp/extractor/vrsquare.py b/yt_dlp/extractor/vrsquare.py
new file mode 100644
index 000000000..9e8740b42
--- /dev/null
+++ b/yt_dlp/extractor/vrsquare.py
@@ -0,0 +1,185 @@
+import itertools
+
+from .common import InfoExtractor
+from ..networking.exceptions import HTTPError
+from ..utils import (
+    ExtractorError,
+    clean_html,
+    extract_attributes,
+    parse_duration,
+    parse_qs,
+)
+from ..utils.traversal import (
+    find_element,
+    find_elements,
+    traverse_obj,
+)
+
+
+class VrSquareIE(InfoExtractor):
+    IE_NAME = 'vrsquare'
+    IE_DESC = 'VR SQUARE'
+
+    _BASE_URL = 'https://livr.jp'
+    _VALID_URL = r'https?://livr\.jp/contents/(?P<id>[\w-]+)'
+    _TESTS = [{
+        'url': 'https://livr.jp/contents/P470896661',
+        'info_dict': {
+            'id': 'P470896661',
+            'ext': 'mp4',
+            'title': 'そこ曲がったら、櫻坂？ ７年間お疲れ様！菅井友香の卒業を祝う会！前半 2022年11月6日放送分',
+            'description': 'md5:523726dc835aa8014dfe1e2b38d36cd1',
+            'duration': 1515.0,
+            'tags': 'count:2',
+            'thumbnail': r're:https?://media\.livr\.jp/vod/img/.+\.jpg',
+        },
+    }, {
+        'url': 'https://livr.jp/contents/P589523973',
+        'info_dict': {
+            'id': 'P589523973',
+            'ext': 'mp4',
+            'title': '薄闇に仰ぐ しだれ桜の妖艶',
+            'description': 'md5:a042f517b2cbb4ed6746707afec4d306',
+            'duration': 1084.0,
+            'tags': list,
+            'thumbnail': r're:https?://media\.livr\.jp/vod/img/.+\.jpg',
+        },
+        'skip': 'Paid video',
+    }, {
+        'url': 'https://livr.jp/contents/P316939908',
+        'info_dict': {
+            'id': 'P316939908',
+            'ext': 'mp4',
+            'title': '2024年5月16日（木） 「今日は誰に恋をする？」公演 小栗有以 生誕祭',
+            'description': 'md5:2110bdcf947f28bd7d06ec420e51b619',
+            'duration': 8559.0,
+            'tags': list,
+            'thumbnail': r're:https?://media\.livr\.jp/vod/img/.+\.jpg',
+        },
+        'skip': 'Premium channel subscribers only',
+    }, {
+        # Accessible only in the VR SQUARE app
+        'url': 'https://livr.jp/contents/P126481458',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        webpage = self._download_webpage(url, video_id)
+        status = self._download_json(
+            f'{self._BASE_URL}/webApi/contentsStatus/{video_id}',
+            video_id, 'Checking contents status', fatal=False)
+        if traverse_obj(status, 'result_code') == '40407':
+            self.raise_login_required('Unable to access this video')
+
+        try:
+            web_api = self._download_json(
+                f'{self._BASE_URL}/webApi/play/url/{video_id}', video_id)
+        except ExtractorError as e:
+            if isinstance(e.cause, HTTPError) and e.cause.status == 500:
+                raise ExtractorError('VR SQUARE app-only videos are not supported', expected=True)
+            raise
+
+        return {
+            'id': video_id,
+            'title': self._html_search_meta(['og:title', 'twitter:title'], webpage),
+            'description': self._html_search_meta('description', webpage),
+            'formats': self._extract_m3u8_formats(traverse_obj(web_api, (
+                'urls', ..., 'url', any)), video_id, 'mp4', fatal=False),
+            'thumbnail': self._html_search_meta('og:image', webpage),
+            **traverse_obj(webpage, {
+                'duration': ({find_element(cls='layout-product-data-time')}, {parse_duration}),
+                'tags': ({find_elements(cls='search-tag')}, ..., {clean_html}),
+            }),
+        }
+
+
+class VrSquarePlaylistBaseIE(InfoExtractor):
+    _BASE_URL = 'https://livr.jp'
+
+    def _fetch_vids(self, source, keys=()):
+        for url_path in traverse_obj(source, (
+            *keys, {find_elements(cls='video', html=True)}, ...,
+            {extract_attributes}, 'data-url', {str}, filter),
+        ):
+            yield self.url_result(
+                f'{self._BASE_URL}/contents/{url_path.removeprefix("/contents/")}', VrSquareIE)
+
+    def _entries(self, path, display_id, query=None):
+        for page in itertools.count(1):
+            ajax = self._download_json(
+                f'{self._BASE_URL}{path}', display_id,
+                f'Downloading playlist JSON page {page}',
+                query={'p': page, **(query or {})})
+            yield from self._fetch_vids(ajax, ('contents_render_list', ...))
+            if not traverse_obj(ajax, (('has_next', 'hasNext'), {bool}, any)):
+                break
+
+
+class VrSquareChannelIE(VrSquarePlaylistBaseIE):
+    IE_NAME = 'vrsquare:channel'
+
+    _VALID_URL = r'https?://livr\.jp/channel/(?P<id>\w+)'
+    _TESTS = [{
+        'url': 'https://livr.jp/channel/H372648599',
+        'info_dict': {
+            'id': 'H372648599',
+            'title': 'AKB48＋チャンネル',
+        },
+        'playlist_mincount': 502,
+    }]
+
+    def _real_extract(self, url):
+        playlist_id = self._match_id(url)
+        webpage = self._download_webpage(url, playlist_id)
+
+        return self.playlist_result(
+            self._entries(f'/ajax/channel/{playlist_id}', playlist_id),
+            playlist_id, self._html_search_meta('og:title', webpage))
+
+
+class VrSquareSearchIE(VrSquarePlaylistBaseIE):
+    IE_NAME = 'vrsquare:search'
+
+    _VALID_URL = r'https?://livr\.jp/web-search/?\?(?:[^#]+&)?w=[^#]+'
+    _TESTS = [{
+        'url': 'https://livr.jp/web-search?w=%23%E5%B0%8F%E6%A0%97%E6%9C%89%E4%BB%A5',
+        'info_dict': {
+            'id': '#小栗有以',
+        },
+        'playlist_mincount': 60,
+    }]
+
+    def _real_extract(self, url):
+        search_query = parse_qs(url)['w'][0]
+
+        return self.playlist_result(
+            self._entries('/ajax/web-search', search_query, {'w': search_query}), search_query)
+
+
+class VrSquareSectionIE(VrSquarePlaylistBaseIE):
+    IE_NAME = 'vrsquare:section'
+
+    _VALID_URL = r'https?://livr\.jp/(?:category|headline)/(?P<id>\w+)'
+    _TESTS = [{
+        'url': 'https://livr.jp/category/C133936275',
+        'info_dict': {
+            'id': 'C133936275',
+            'title': 'そこ曲がったら、櫻坂？VR',
+        },
+        'playlist_mincount': 308,
+    }, {
+        'url': 'https://livr.jp/headline/A296449604',
+        'info_dict': {
+            'id': 'A296449604',
+            'title': 'AKB48 アフターVR',
+        },
+        'playlist_mincount': 22,
+    }]
+
+    def _real_extract(self, url):
+        playlist_id = self._match_id(url)
+        webpage = self._download_webpage(url, playlist_id)
+
+        return self.playlist_result(
+            self._fetch_vids(webpage), playlist_id, self._html_search_meta('og:title', webpage))
diff --git a/yt_dlp/extractor/youtube/_video.py b/yt_dlp/extractor/youtube/_video.py
index c773ba2f1..b8cc72ab1 100644
--- a/yt_dlp/extractor/youtube/_video.py
+++ b/yt_dlp/extractor/youtube/_video.py
@@ -2176,10 +2176,13 @@ def _extract_player_js_global_var(self, jscode):
         """Returns tuple of strings: variable assignment code, variable name, variable value code"""
         return self._search_regex(
             r'''(?x)
-                \'use\s+strict\';\s*
+                (?P<q1>["\'])use\s+strict(?P=q1);\s*
                 (?P<code>
                     var\s+(?P<name>[a-zA-Z0-9_$]+)\s*=\s*
-                    (?P<value>"(?:[^"\\]|\\.)+"\.split\("[^"]+"\))
+                    (?P<value>
+                        (?P<q2>["\'])(?:(?!(?P=q2)).|\\.)+(?P=q2)
+                        \.split\((?P<q3>["\'])(?:(?!(?P=q3)).)+(?P=q3)\)
+                    )
                 )[;,]
             ''', jscode, 'global variable', group=('code', 'name', 'value'), default=(None, None, None))
 
@@ -2187,7 +2190,7 @@ def _fixup_n_function_code(self, argnames, code, full_code):
         global_var, varname, _ = self._extract_player_js_global_var(full_code)
         if global_var:
             self.write_debug(f'Prepending n function code with global array variable "{varname}"')
-            code = global_var + ', ' + code
+            code = global_var + '; ' + code
         else:
             self.write_debug('No global array variable found in player JS')
         return argnames, re.sub(
@@ -2196,7 +2199,7 @@ def _fixup_n_function_code(self, argnames, code, full_code):
 
     def _extract_n_function_code(self, video_id, player_url):
         player_id = self._extract_player_info(player_url)
-        func_code = self.cache.load('youtube-nsig', player_id, min_ver='2025.03.21')
+        func_code = self.cache.load('youtube-nsig', player_id, min_ver='2025.03.24')
         jscode = func_code or self._load_player(video_id, player_url)
         jsi = JSInterpreter(jscode)
 
diff --git a/yt_dlp/utils/_utils.py b/yt_dlp/utils/_utils.py
index 0140acaa3..24525560e 100644
--- a/yt_dlp/utils/_utils.py
+++ b/yt_dlp/utils/_utils.py
@@ -2767,7 +2767,8 @@ def process_escape(match):
     def template_substitute(match):
         evaluated = js_to_json(match.group(1), vars, strict=strict)
         if evaluated[0] == '"':
-            return json.loads(evaluated)
+            with contextlib.suppress(json.JSONDecodeError):
+                return json.loads(evaluated)
         return evaluated
 
     def fix_kv(m):


Test patch:
diff --git a/test/test_utils.py b/test/test_utils.py
index 42dc7f937..e60ceed8f 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -1260,6 +1260,7 @@ def test_js_to_json_edgecases(self):
     def test_js_to_json_malformed(self):
         self.assertEqual(js_to_json('42a1'), '42"a1"')
         self.assertEqual(js_to_json('42a-1'), '42"a"-1')
+        self.assertEqual(js_to_json('{a: `${e("")}`}'), '{"a": "\\"e\\"(\\"\\")"}')
 
     def test_js_to_json_template_literal(self):
         self.assertEqual(js_to_json('`Hello ${name}`', {'name': '"world"'}), '"Hello world"')
diff --git a/test/test_youtube_signature.py b/test/test_youtube_signature.py
index 45dc9113b..453caacd6 100644
--- a/test/test_youtube_signature.py
+++ b/test/test_youtube_signature.py
@@ -83,6 +83,11 @@
         '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
         'AAOAOq0QJ8wRAIgXmPlOPSBkkUs1bYFYlJCfe29xx8j7vgpDL0QwbdV06sCIEzpWqMGkFR20CFOS21Tp-7vj_EMu-m37KtXJoOy1',
     ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpz2ICs6EVdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+    ),
 ]
 
 _NSIG_TESTS = [
@@ -234,6 +239,10 @@
         'https://www.youtube.com/s/player/643afba4/tv-player-ias.vflset/tv-player-ias.js',
         'ir9-V6cdbCiyKxhr', '2PL7ZDYAALMfmA',
     ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias.vflset/en_US/base.js',
+        'eWYu5d5YeY_4LyEDc', 'XJQqf-N7Xra3gg',
+    ),
 ]