From cb73b8460c3ce6d37ab651a4e44bb23b10056154 Mon Sep 17 00:00:00 2001
From: bashonly <88596187+bashonly@users.noreply.github.com>
Date: Sat, 14 Jan 2023 10:40:42 -0600
Subject: [extractor/nbc] Fix `NBC` and `NBCStations` extractors (#6033)

Improve `InfoExtractor._parse_smil_formats` extension detection
Closes #6019
Authored by: bashonly
---
 yt_dlp/extractor/common.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'yt_dlp/extractor/common.py')

diff --git a/yt_dlp/extractor/common.py b/yt_dlp/extractor/common.py
index ef9759974..e37595ffd 100644
--- a/yt_dlp/extractor/common.py
+++ b/yt_dlp/extractor/common.py
@@ -32,6 +32,7 @@ from ..utils import (
     FormatSorter,
     GeoRestrictedError,
     GeoUtils,
+    HEADRequest,
     LenientJSONDecoder,
     RegexNotFoundError,
     RetryManager,
@@ -80,6 +81,7 @@ from ..utils import (
     update_Request,
     update_url_query,
     url_basename,
+    urlhandle_detect_ext,
     url_or_none,
     urljoin,
     variadic,
@@ -2311,7 +2313,8 @@ class InfoExtractor:
             height = int_or_none(medium.get('height'))
             proto = medium.get('proto')
             ext = medium.get('ext')
-            src_ext = determine_ext(src)
+            src_ext = determine_ext(src, default_ext=None) or ext or urlhandle_detect_ext(
+                self._request_webpage(HEADRequest(src), video_id, note='Requesting extension info', fatal=False))
             streamer = medium.get('streamer') or base
 
             if proto == 'rtmp' or streamer.startswith('rtmp'):
-- 
cgit v1.2.3