@ -43,7 +43,7 @@ class StreamCZIE(InfoExtractor):
if not stream.get('url'):
continue
yield {
'format_id': f'{format_id}-{ext}',
'format_id': '{}-{}'.format(format_id, ext),
'ext': ext,
'source_preference': pref,
'url': urljoin(spl_url, stream['url']),