(media_el.attrib.get('href') or media_el.attrib.get('url')))
tbr = int_or_none(media_el.attrib.get('bitrate'))
formats.append({
- 'format_id': '-'.join(filter(None, [f4m_id, 'f4m-%d' % (i if tbr is None else tbr)])),
+ 'format_id': '-'.join(filter(None, [f4m_id, compat_str(i if tbr is None else tbr)])),
'url': manifest_url,
'ext': 'flv',
'tbr': tbr,