except ValueError:
ext_ord = -1
# We only compare the extension if they have the same height and width
- return (f.get('height'), f.get('width'), ext_ord)
+ return (f.get('height') if f.get('height') is not None else -1,
+ f.get('width') if f.get('width') is not None else -1,
+ ext_ord)
formats = sorted(formats, key=_free_formats_key)
info_dict['formats'] = formats