I can imort video into Encore but it will not play in the timeline. I can scrub or even frame thru it but it will not play. I had the same problem with Premiere Pro CS6(on my iMac i7 with the GeForce GTX 680MX Video Card) but solved it by adding the 680MX to the list of accepted video cards.
I don't know how to do this for Encore. Please help!
Jerry