Join Date:Joined: Jan 2013
Its not just Snapchat. This is a universal camera issue as a result of the camera api/driver presented in (what I believe was) 4.3 and above. Fix is reportedly in 4.4.3 which should be rolling out soon. Now, I'm not sure if it more apparent in Snapchat than in other apps, but it definitely affects all apps that utilize the camera.
Sent from my Nexus 4 using XDA Free mobile app