403. That’s an error.

Your client does not have permission to get URL /videoplayback?id=bbba53f2c1b71aaf&itag=18&source=webdrive&requiressl=yes&ttl=transient&mm=30&mn=sn-5hne6n7d&ms=nxu&mv=u&pl=32&ei=n2sqWd2ZBsbgqQXj1pCADg&driveid=0B6CtcC7OtzjlamdsYTJXeHpDNm8&mime=video/mp4&lmt=1495945605347084&mt=1495952019&ip=2a02:5060:513:c049::5&ipbits=0&expire=1495966687&sparams=ip,ipbits,expire,id,itag,source,requiressl,ttl,mm,mn,ms,mv,pl,ei,driveid,mime,lmt&signature=ABDAD7B441238EC3ACA25EC4609D884C59A3776B.AE7C8E65D7D6CA2CACBB88929E64E8AC7664E3BA&key=ck2&app=explorer from this server. That’s all we know.