In the timeline view, grab the clip on the right and move
it further to the left to increase the time duration for
the transition. By increasing the time, it'll play slower.
If by slowing down a transition you mean you want it to take longer, you can
go to the timeline view - select the transition, zoom the timeline in close,
trim the timeline longer.
Or in options - set the default transition length longer if you want them
all longer. Adding transitions after this will take the new setting.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.