f = parse_content_type(source_attributes.get('type'))
is_plain_url, formats = _media_formats(src, media_type, f)
if is_plain_url:
+ # res attribute is not standard but seen several times
+ # in the wild
+ f['height'] = int_or_none(source_attributes.get('res'))
f.update(formats[0])
media_info['formats'].append(f)
else: