Well..

I use it ALL the time to make my video edits for my multi-fandom account on Instagram (@fangirloh), and today I was trying to make a special edit, and when I exported it all that showed up on my camera roll was a black screen with vivavideos & myselfs watermark. use to be one of my favourites but this is just a huge disappointment!!

Kristen6203 about VivaVideo - Video Editor&Maker, v4.6.0