New high-definition disc format to compete with HD DVD and Blu-ray At the Custom Electronic Design & Installation Association (CEDIA) trade show in Denver, a company promoting a new high-definition optical disc format demonstrated set-top players and high-definition movies that cost far less than ones that use the competing Blu-ray Disc or HD DVD formats. The only faux pas: Arriving late to a two-party format war that consumers are already reluctant to support.