A method of generating a modified video file via a user interface presented on a mobile device including a display is disclosed. The method comprises displaying media corresponding to a first video file on a display of the mobile video device. In response to receiving an initial user input, generation of a second video file corresponding to the displayed media commences. During the displaying of the media corresponding to the first video file, user inputs to manipulate the first video file are received. The second video file is then generated from the first video file as manipulated by the user inputs. A sequence of versions of the video file may be created in a similar manner, which are selectable via a video version stack.