Why RealD is For Sale and Who Would Want to Buy It

Following a disappointing Q3 RealD has revealed that it has appointed investment banker Moelis & Co. to “explore a full range of strategic alternatives available to the Company”, which as Bloomberg notes is “language that typically means a company is seeking a buyer.” So why is RealD for sale (or is it really?), who would want to buy it and what would be the reason for wanting to acquire it?