'url': xpath_text(n, './url', fatal=True),
'tbr': int_or_none(n.attrib['bitrate']),
} for n in doc.findall('.//streams/stream')]
'url': xpath_text(n, './url', fatal=True),
'tbr': int_or_none(n.attrib['bitrate']),
} for n in doc.findall('.//streams/stream')]