Abstract: A method for playing quality adjustment in multi-window video playing is disclosed. The method includes: at an electronic device, presetting the number of video playing windows and corresponding playing qualities according to performance of the electronic device, wherein the video playing windows includes one master window and one or more slave windows; and all the slave windows are set to have the same playing quality, and the master window has a playing quality higher than that of the slave windows; receiving a focus determining instruction to determine a focus window indicated by the focus determining instruction as the master window and other windows as the slave windows; and playing a video file in the master window according to the preset playing quality of the master window, and playing the video file in the slave windows according to the preset playing quality of the slave windows.

Abstract: The present application discloses a method and an electronic device for switching video display window. The method for switching the video display window includes: acquiring a width-height ratio of a video displayed in a current video display window and a width-height ratio of a target video display window when it is monitored that there is a video display window switching command; contrasting the width-height ratio of the video with the width-height ratio of the target video display window; and adjusting the width-height ratio of the target video display window to the width-height ratio of the video when the width-height ratio of the video is inconsistent with the width-height ratio of the target video display window.

Abstract: The embodiments of the disclosure disclose a method and a system for displaying a rolling broadcast watermark. The method comprises: detecting a program having no station logo information in program information played by a rolling broadcast station; looking up and acquiring station logo information of a program station corresponding to the program according to the detected program; performing watermarking process on the station logo information, and when a program of the program station is played, displaying the station logo information having a watermark in a specific area along with the program of the program station. The embodiments of the present disclosure extract corresponding program information and program station information according to contents recorded in program lists of different program stations and performs a watermarking process, thus effectively solving the problem of displaying a rolling broadcast watermark in a rolling broadcast station.