Patent ID: 9462218
Filing Date: 2016-10-04
CPC Classification: H04N

Claim Text:
1. A video display device for displaying a recorded video by a head mounted display, the video display device comprising: a communicator configured to acquire a video including rotation information that indicates a rotation angle of a plurality of frames of the video recorded from the head mounted display, wherein the rotation information is acquired while the head mounted display is worn by a user; a display configured to display the video; and a processor configured to set up a video playback mode, wherein the video playback mode includes a natural display mode for displaying the acquired video without performing a rotation compensation based upon the rotation information, and a horizontal display mode for displaying the acquired video with performing the rotation compensation based upon the rotation information, wherein, when the video playback mode corresponds to the horizontal display mode, the video display device performs the rotation compensation of a plurality of sequential frames of the video based upon the rotation information, and displays each of the plurality of sequential frames having the performed rotation compensation of the video and cropped to a size, wherein, when a frame corresponds to a predetermined angle range is displayed while exceeding a predetermined time interval during the display of the video, the video display device displays a playback mode reset interface configured to reset the set video playback mode, wherein the cropping size is determined based upon the rotation information of the plurality of sequential frames of the video, wherein the cropping size is decided based upon a frame having a minimum crop area, among the plurality of frames of the video, based upon the rotation information, and wherein the rotation angle is an angle rotating around a front-to-back axis.