title: How to access "Retake" option in UIImagePickerController?
body: <p>I am a novice developer developing a project involving taking video from iPhone and uploading it to server. For taking the video i am using the <code>UIImagePickerController</code>. It is perfect for my requirement. It allows me to add <code>overlay views</code> to camera and set <code>videoMaximumDuration</code>. But as per my requirement i will add a overlay view after the user selects the <code>Use video</code> option. in that view I will once again have a button which has the functionality of <code>Retake</code> video. It may seem out of logic, but as per the project's requirement it is logical, Trust me. I have googled it and most people had preferred to use <code>AVSessionManager</code> and create a custom camera control. But creating a custom controlled camera similar to <code>UIImagePickerController</code> is really taking a toll on my deadline. Also i want to reuse only the <code>Retake</code> functionality. </p>
  
  <p>Is there any way to use the <code>Retake</code> video after selecting the <code>Use Video</code> option or are there any workarounds for this scenario ?</p>
  
  <p>I am using Xcode 7.3 Swift 2.2</p>