I build my first screenshow (31 photos) with music & transition effects. All looks great when played in Lightroom, but when I export as video I see the photos and music is playing , but no transition effect takes place ... tried each export quality with no difference . I am work on a 2015 macbook pro with max RAM & pro graphic card.
Any idea what is happening ???
Could you please let us know which version of Lightroom are you using?
What are the export settings of the video slideshow?