How to create smaller mini camera view like in Tumblr iPhone app image picker

I would like to know how Tumblr app is adding a mini camera live view on collection view cell in their app? Is it UIImagePickerController of type camera resized? I would be glad if someone could give more idea on this implementation?

Solution

If you want to do that, you're going to have to use AVFoundation. You can size and position the AVCaptureVideoPreviewLayer however you'd like.