diff --git a/youtube_dl/extractor/archiveorg.py b/youtube_dl/extractor/archiveorg.py index 34ce8429b1..ba94b54547 100644 --- a/youtube_dl/extractor/archiveorg.py +++ b/youtube_dl/extractor/archiveorg.py @@ -25,6 +25,12 @@ class ArchiveOrgIE(InfoExtractor): } } + def get_optional_metadata(self, data, field): + try: + return data['metadata'][field][0] + except KeyError: + return None + def _real_extract(self, url): mobj = re.match(self._VALID_URL, url) video_id = mobj.group('id') @@ -33,10 +39,12 @@ def _real_extract(self, url): json_data = self._download_webpage(json_url, video_id) data = json.loads(json_data) - title = data['metadata']['title'][0] - description = data['metadata']['description'][0] - uploader = data['metadata']['creator'][0] - upload_date = unified_strdate(data['metadata']['date'][0]) + title = self.get_optional_metadata(data, 'title') + description = self.get_optional_metadata(data, 'description') + uploader = self.get_optional_metadata(data, 'creator') + upload_date = self.get_optional_metadata(data, 'date') + if upload_date: + upload_date = unified_strdate(upload_date) formats = [ {