Created slideshow in Lightroom cc 2015. Everything looks great when I play. Exported to video and I get a white background (instead of black) and washed out photos you can barely see; music plays fine. Running on MacBook Pro (2010), 8GB RAM, NVIDIA GeForce GT 330M 512 MB, 750GB 72RPM, OsX 10.8.5.
hi there - did you manage to find a fix to this? Having just the same problem dammit. Thanks so much and happy new year!