Method for multi-picture control in video conference, related device, and storage medium

Disclosed are a method for multi-picture control in a video conference, a related device, and a storage medium. An MCU supports a multi-site video conference; and in the method, the process executed by the MCU comprises: when a conference is initially started, the MCU sending unified conference site picture information to a video terminal in each conference site; and during the conference, the MCU sending corresponding customized conference site picture information to some video terminals according to conference site picture customization requests of the video terminals.