Merge branch 'master' into yt-live-from-start-range

yt_dlp/downloader/external.py

@@ -508,7 +508,7 @@ class FFmpegFD(ExternalFD):
         env = None
         proxy = self.params.get('proxy')
         if proxy:
-            if not re.match(r'^[\da-zA-Z]+://', proxy):
+            if not re.match(r'[\da-zA-Z]+://', proxy):
                 proxy = f'http://{proxy}'
 
             if proxy.startswith('socks'):
@@ -559,7 +559,7 @@ class FFmpegFD(ExternalFD):
 
         selected_formats = info_dict.get('requested_formats') or [info_dict]
         for i, fmt in enumerate(selected_formats):
-            is_http = re.match(r'^https?://', fmt['url'])
+            is_http = re.match(r'https?://', fmt['url'])
             cookies = self.ydl.cookiejar.get_cookies_for_url(fmt['url']) if is_http else []
             if cookies:
                 args.extend(['-cookies', ''.join(