My iphone 6 has a nice slow motion feature, but when I download a slo mo clip to my PC and try to replay it, it starts skipping and basically just can't play it back. Yet I've found that if my daughter sends a slo mo clip from her iphone 6 to my iphone 6, I download it to my PC and it plays back fine. What would be causing this to happen? Would this be some kind of compression process happening between iphones that is allowing playback?