{ "mediaObjectId" : "44CECE7E48EF00A0E0538C93F11600A0", "mediaType" : "V", "mimetype" : "application/x-video", "background" : "//stream-media.loc.gov/webcasts/2016/160922ame1200/data/160922ame1200_bg.jpg", "aspectRatio" : "4:3", "autoPlay" : false, "playerSize" : "largeWide", "metadata" : [''], "expandAccessibility" : false }