Fix it

Ok so the app is fine and all but when ever I save my video I made when I go to look at in in my camera roll and play it sometimes there will be like a black line going across the photos and I like to make the video as long as the end of the song I use with pictures but when I go to watch it it cuts my music short you should really fix it then I will give you a better review

The fact is my world about Slideshow Add Music to Photos, v1.8