Big Blue is splashing more cash on beefing up its cloud-based offerings, this week acquiring Clearleap along with its video platform, for an unspecified amount. Clearleap counts HBO, TWC, Verizon and BBC America among its customer list, and provides video services that deliver content to multiscreen devices, as well as an open API framework for app building and workflow management, and the subscription and monetization services that accompany these OTT assets. Clearleap gives IBM a full stack of OTT software, which it can then use to challenge Cisco, Alcatel (now Nokia), and Ericsson, as well as construct new services from the myriad of component pieces it now owns. Suddenly, IBM finds itself firmly in the video game, with a very…