{ "mediaObjectId" : "45EE625663190060E0538C93F1160060", "mediaType" : "V", "mimetype" : "application/x-video", "background" : "//stream-media.loc.gov/webcasts/2016/161019ame1200/data/161019ame1200_bg.jpg", "aspectRatio" : "4:3", "autoPlay" : false, "playerSize" : "largeWide", "metadata" : [''], "expandAccessibility" : false }