[extractor/common] Extract author as uploader for VideoObject in _json_ld

youtube_dl/extractor/common.py

@@ -1268,6 +1268,7 @@ class InfoExtractor(object):
                 'thumbnail': url_or_none(e.get('thumbnailUrl') or e.get('thumbnailURL')),
                 'duration': parse_duration(e.get('duration')),
                 'timestamp': unified_timestamp(e.get('uploadDate')),
+                'uploader': str_or_none(e.get('author')),
                 'filesize': float_or_none(e.get('contentSize')),
                 'tbr': int_or_none(e.get('bitrate')),
                 'width': int_or_none(e.get('width')),