I had some slow motion video clips I made of my grandson with iPhone 5S with iOS7. After upgrading to IOS 8.1.1, they will not play in slow motion on the iPhone or in iTunes on my Mac Pro 5.1 (2010). In the 'Master' file I found the clips and the size of the file is much bigger than non slow mo clips of the same time length. Also, when the info tab is selected and I scroll through my photos, the info does list the frames per second as 120 FPS. I cannot find a way to play the clip in slow-mo as I haas before the update. My Mac Pro is running Mountain Lion.