Raising error only if video parsing fails

yt_dlp/extractor/facebook.py

@@ -445,10 +445,9 @@ class FacebookIE(InfoExtractor):
         try:
             login_results = self._download_webpage(request, None,
                                                    note='Logging in', errnote='unable to fetch login page')
-            if "Your Request Couldn" in login_results:
-                raise ExtractorError('Failed to perform login request.')
-
-            if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
+            if 'Your Request Couldn' in login_results:
+                self.raise_login_required('Failed to login with credentials', method='cookies')
+            elif re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
                 error = self._html_search_regex(
                     r'(?s)<div[^>]+class=(["\']).*?login_error_box.*?\1[^>]*><div[^>]*>.*?</div><div[^>]*>(?P<error>.+?)</div>',
                     login_results, 'login error', default=None, group='error')
@@ -481,7 +480,10 @@ class FacebookIE(InfoExtractor):
             return
 
     def _extract_from_url(self, url, video_id):
-        cookies = self._get_cookies(url)  # Saving before making first request, as they might get discarded
+        cookies = self._get_cookies(url)
+        # user passed logged-in cookies or attempted to login
+        login_data = cookies.get('c_user') and cookies.get('xs')
+        logged_in = False
 
         webpage = self._download_webpage(
             url.replace('://m.facebook.com/', '://www.facebook.com/'), video_id)
@@ -489,17 +491,17 @@ class FacebookIE(InfoExtractor):
         sjs_data = [self._parse_json(j, video_id, fatal=False) for j in re.findall(
             r'data-sjs>({.*?ScheduledServerJS.*?})</script>', webpage)]
 
-        if cookies.get('c_user') and cookies.get('xs'):  # user passed logged-in cookies or attempted to login:
-            if get_first(sjs_data, (
+        if login_data:
+            logged_in = get_first(sjs_data, (
                     'require', ..., ..., ..., '__bbox', 'define',
-                    lambda _, v: 'CurrentUserInitialData' in v, ..., 'ACCOUNT_ID'), default='0') == '0':
-                raise ExtractorError('Failed to login with provided data.', expected=True)
-            if any(content in webpage for content in ['180 days left to appeal', 'suspended your account']):
-                raise ExtractorError('Your account is suspended', expected=True)
-            if 'send a code to confirm the mobile number you give us' in webpage:
-                raise ExtractorError('Facebook is requiring mobile number confirmation', expected=True)
-            if 'your account has been locked' in webpage:
-                raise ExtractorError('Your account has been locked', expected=True)
+                    lambda _, v: 'CurrentUserInitialData' in v, ..., 'ACCOUNT_ID'), default='0') != '0'
+            if logged_in:
+                if any(content in webpage for content in ['180 days left to appeal', 'suspended your account']):
+                    raise ExtractorError('Your account is suspended', expected=True)
+                if 'send a code to confirm the mobile number you give us' in webpage:
+                    raise ExtractorError('Facebook is requiring mobile number confirmation', expected=True)
+                if 'your account has been locked' in webpage:
+                    raise ExtractorError('Your account has been locked', expected=True)
 
         if props := get_first(sjs_data, (
                 'require', ..., ..., ..., '__bbox', 'require', ..., ..., ..., 'rootView',
@@ -821,6 +823,10 @@ class FacebookIE(InfoExtractor):
             video_data = extract_from_jsmods_instances(tahoe_js_data)
 
         if not video_data:
+            if not login_data:
+                raise ExtractorError('Cannot parse data. Try logging in.', expected=True)
+            if not logged_in:
+                raise ExtractorError('Failed to login with provided data.', expected=True)
             raise ExtractorError('Cannot parse data')
 
         if len(video_data) > 1: