Do you think the HMC150 and the hpx170 would work well together? In other words, can both different video formats be on the timeline without any problems (in Vegas 9.0 for example)?
Did you end up figuring out the problem? I have the same issue too. Can’t render as Dolby Digital Pro, only Dolby Digital Studio which then has to be recompressed by Architect, wasting valuable time.