Abstract: Disclosed are a method and electronic device for upgrading a software development kit (SDK) of an application. The method includes, at a cloud server: configuring, by the cloud server, service modules and service configuration files of the SDK; upgrading, by the cloud server, the service modules and the service configuration files of the SDK; receiving, by the cloud server, an interaction request sent by the application, and parsing, by the cloud server, a system type of the application and a version of the SDK; and sending, by the cloud server, the service modules and/or the service configuration files to a terminal including the SDK based on the system type of the application and the version of the SDK, and upgrading, by the cloud server, the SDK of the application. By applying the method and electronic device of the present application, the SDKs of applications may be upgraded automatically.

Abstract: A video player for multiple cameras, a playing system and a playing method. The video player includes: an interface configuration module which is configured to provide a plurality of small play windows and a large play window; a video playing component which is configured to call a plurality of low code rate videos to be played in the plurality of small play windows respectively; and an audio and video playing component and a corresponding trigger module. When multiple videos are played at the same time, the audio and video played by the large play window is primary and the videos played by the small windows are secondary. Volume control is removed by separately compressing the videos played in the small play windows for secondary viewing. In addition, a user may flexibly and conveniently view different parts of the same video from multiple angles and multiple dimensions.