Provided in embodiments of the disclosure are a media processing method, device and system, and the computer-readable storage medium. The media processing method includes: in a media file, describing position information and/or position change information of a user; and processing the media file to determine a video to be played. As such, by describing position information and/or position change information of a user in the media file, the video frame can be adjusted in real time according to the position of the user, thereby improving the quality of viewing by the user and improving user experience.