New user here so be kind. I've been looking but cant find the solution to whether its possible to add slow motion to an entire series of clips at the same time or do I have to do it clip by clip. And if so. how? Im making a football Video and want all clips to be at 70% or so. 
Btw Doing this in Movie Studio 12 causes render of a 25 minute video to take over 24 hours. .. and that's if it doesnt error out while youre asleep. 
thanks much