iOS App - Video Recording - Proof of Concept

Create an iOS app that allows the user to record video, and, while recording can press a “Crop” button which will then crop the last 10 seconds, saving it to the user’s library as a self-contained video. So that means whilst the app is on, it is continually recording video. That video is not stored forever though - if the user never hits the crop button, no video is stored permanently. If the crop button is pressed then we keep the previous 10 seconds video. Not 10 seconds of video starting at the button press - but 10 seconds of video ENDING on the button press. Ensure that; Both Audio and Video is recorded. While cropping the video, recording should still continue in the background allowing the user to re-tap the ‘crop’ button within 2 seconds; therefore creating a new crop. A small confirmation should appear that the video was saved successfully. While recording, ensure that the video file being temporarily recorded to, does not exceed 400MB. If another recording instance is required, ensure that the user can still create a new crop of the video while the 2nd instance is being initialised (avoid a “reset” of the recording which may result in a 3 second crop). The ‘Crop’ button should be located in the bottom right of the screen, 50x50 pixel in size Must work in Landscape mode Compatible with iOS 10.3 upwards Output format should be either mp4 or mov. 100% Objective C or Swift. Bonus; iPad compatible.