I really cant comment on this , but I need this one on my Lumia 920 , this is something off topic but apple made this on iPhone 5s , I installed a tweak on my iPad via cydia and I got the same slow motion video at 720p 30 FPS which was OK for me , so if it is hardware feature , They can add this on future windows phone , if they tried to made it work via software I will be very happy to see this feature , after results are amazing