+ return self._parse_f4m_formats(
+ manifest, manifest_url, video_id, preference=preference, f4m_id=f4m_id,
+ transform_source=transform_source, fatal=fatal)
+
+ def _parse_f4m_formats(self, manifest, manifest_url, video_id, preference=None, f4m_id=None,
+ transform_source=lambda s: fix_xml_ampersands(s).strip(),
+ fatal=True):