-        login_form = self._search_regex(
-            r'(?s)(<form[^>]+(?:id|name)="Form-login".+?</form>)', login_webpage, 'login form')
-        form_data = self._hidden_inputs(login_form)
+
+        def extract_form_url_and_data(wp, default_form_url, form_spec_re=''):
+            form, form_elem = re.search(
+                r'(?s)((<form[^>]+?%s[^>]*?>).+?</form>)' % form_spec_re, wp).groups()
+            form_data = self._hidden_inputs(form)
+            form_url = extract_attributes(form_elem).get('action') or default_form_url
+            return form_url, form_data
+
+        post_url, form_data = extract_form_url_and_data(
+            login_webpage,
+            'https://services.radio-canada.ca/auth/oauth/v2/authorize/login',
+            r'(?:id|name)="Form-login"')