Vacation photos/videos turned into video montage

I have about 200, maybe 250 photos and short videos that I would like created into a video montage. This is for private family use, NOT commercial use and will be on a private youtube channel. All videos will already be edited so all I need you to do is upload, center photos correctly, insert the short videos and add some decent music. Some minor graphics of your choosing is fine. Please send me links with examples but I am not looking for anything too fancy or in depth. Again, no video editing needed from source files. Files will mostly be from my iphone and some pictures from a nice digital camera. hoping to keep the video to about 20 minutes total, hopefully less.