PREFS = {'high_quality': 2, 'low_quality': 0}
formats = []
for format_key in ('mp4', 'webm'):
- for qname, qurl in vdata[format_key].items():
+ for qname, qurl in vdata.get(format_key, {}).items():
formats.append({
'format_id': format_key + '_' + qname,
'url': qurl,