A video processing method, performed by a video processing device, for generating a secured video, the method comprising: receiving an identifier of a video and information about a security policy, selected by a user, to be set to the video; receiving (S 110) security information related to the security policy; preparing the video by loading the video using the received identifier of the video and encoding the loaded video; and generating the secured video by inserting the received security information into a header of the prepared video, wherein the receiving of the information about the security policy to be set to the video comprises receiving information of the security policy selected by the user in which a portion of a first object included in a screen of the video is restricted from being reproduced while a portion of a second object included in the screen of the video is allowed to be reproduced by a video reproducing device having a reproduction authority, wherein the security information comprises: an identifier of the video reproducing device having the reproduction authority to reproduce the video; and information about the first object restricted from being reproduced by the video reproducing device having the reproduction authority, and information about the second object allowed to be reproduced by the video reproducing device having the reproduction authority, wherein the video reproducing device having the reproduction authority scrambles the portion of the first object in the screen, by using the information about the first object included in the secured video, and wherein the first object restricted from being reproduced and the second object allowed to be reproduced are distinct, and the first object and the second object each include at least one of a human portion, an artifact portion, and a background portion. receiving an identifier of a video and information about a security policy, selected by a user, to be set to the video; receiving (S 110) security information related to the security policy; preparing the video by loading the video using the received identifier of the video and encoding the loaded video; and generating the secured video by inserting the received security information into a header of the prepared video, wherein the receiving of the information about the security policy to be set to the video comprises receiving information of the security policy selected by the user in which a portion of a first object included in a screen of the video is restricted from being reproduced while a portion of a second object included in the screen of the video is allowed to be reproduced by a video reproducing device having a reproduction authority, wherein the security information comprises: an identifier of the video reproducing device having the reproduction authority to reproduce the video; and information about the first object restricted from being reproduced by the video reproducing device having the reproduction authority, and information about the second object allowed to be reproduced by the video reproducing device having the reproduction authority, wherein the video reproducing device having the reproduction authority scrambles the portion of the first object in the screen, by using the information about the first object included in the secured video, and wherein the first object restricted from being reproduced and the second object allowed to be reproduced are distinct, and the first object and the second object each include at least one of a human portion, an artifact portion, and a background portion. an identifier of the video reproducing device having the reproduction authority to reproduce the video; and information about the first object restricted from being reproduced by the video reproducing device having the reproduction authority, and information about the second object allowed to be reproduced by the video reproducing device having the reproduction authority, wherein the video reproducing device having the reproduction authority scrambles the portion of the first object in the screen, by using the information about the first object included in the secured video, and wherein the first object restricted from being reproduced and the second object allowed to be reproduced are distinct, and the first object and the second object each include at least one of a human portion, an artifact portion, and a background portion.