My Ipad Won’t Take A Video? Please Help 5 Stars!!?

Okay is is really odd!
So you know how on the iPad 2, iPhone and ITouch 3+ can take photos and videos??? And you know how there is that little thing you slide to change it from video and camera. Well my iPad 2 doesn’t have that anymore! It’s SO weird! I’ve had this for about a year exactly and I’ve never seen anything like this….I’m really confused.
Do you know anything about this? Has it happened to you. I’m open to ANYYYY advice.
Thank you lovelies!
Ps. If you need any more info just ask and I will update the q and you can update your a. :) thanks again! Xoxo