How to change video transitions to show with black backgrounds not transparent?
I'm not sure if it's because I switched from a Mac to Windows, or it is the 2017 update, however, video transitions would always show a black background. Now when editing they show transparent making it difficult to see the transition. When I encode the videos they display with a black background as expected. Please help me make them black again.
When I encode the videos they display with a black background as expected. How can make the transitions black again?

