Iphone 5s Slowmotion save?

Hello all apple users!

I just bought the new iphone 5s and i liked it alot! Been a Apple user for a while aswell.

My problem for today is the new feature with slow motion. I have some friends like from Whatsapp, viber, instagram and so on and the problem now is that i cant make the slow motion feature to work with it. I also tried to with the computer (windows) and it doesnt show slow motion aswell. so now i wonder why is it like that? Will there be a update or something that will fix this issues or yeah? Would love to hear like whats going on :)

EDIT: i have read abit from google that you could email yourself the video and then just save it to camera roll but as i see, it does loss alot of quaöity which

makes the video not worth to see almost. I dont know if there be a future souition with this or ?

Would appreciate help:)