Until now, we viewed ourselves more as a technology provider for both groups," said Jordi Ribas, Microsoft's director of technology strategy for Windows Digital Media, and a key developer of the VC-1 codec currently in use by both HD DVD and Blu-ray. He revealed that Microsoft and Intel had produced a list of what he called "key requirements for the success of next-generation DVD." For several months, while those requirements were being circulated, both companies worked on developing key standards to be implemented by both formats. Ribas said he was directly involved with implementing the VC-1 codec, and also worked jointly with Disney to produce the iHD interactive layer considered by both camps, but eventually adopted only by HD DVD (Disney is a member of the Blu-ray Disc Association.) During that time, Intel and Microsoft both maintained their public neutrality. But very recently, from the two companies' perspective, things started unraveling unexpectedly for Blu-ray.