In preparation for its pending buyout of Time Warner Cable, Comcast has agreed to transfer a portion of its post-merger subscribers to Charter Communications. The deal, which was rumored last week and confirmed this morning, will see roughly 1.4 million Time Warner Cable subscribers sold to Charter, expanding its 4.4 million video customer base to around 5.7 million, according to a statement. This addition would make Charter the second-largest cable operator in the US, though the new Comcasts 30 million video subscribers would still put its numbers to shame. Comcast and Charter will trade 1.6 million subscribers in different markets, a decision that they say will let them operate more efficiently.