+ def select_format(self, format_spec, available_formats):
+ if format_spec == 'best' or format_spec is None:
+ return available_formats[-1]
+ elif format_spec == 'worst':
+ return available_formats[0]
+ else:
+ extensions = [u'mp4', u'flv', u'webm', u'3gp']
+ if format_spec in extensions:
+ filter_f = lambda f: f['ext'] == format_spec
+ else:
+ filter_f = lambda f: f['format_id'] == format_spec
+ matches = list(filter(filter_f, available_formats))
+ if matches:
+ return matches[-1]
+ return None
+