Switching method and switching device for multiple video streams and storage medium

The invention discloses a switching method and device for multiple video streams, and the method comprises the steps: firstly obtaining the multiple video streams, determining key frames of the multiple video streams, respectively embedding preset time synchronization supplemental enhancement information into the key frames of the multiple video streams, responding to a received switching request of the multiple video streams sent by a terminal, and switching the multiple video streams according to the time synchronization supplemental enhancement information. According to the method, the key frame before switching and the key frame after switching in the multiple video streams are obtained, switching of the multiple video streams is achieved based on the key frame before switching and the key frame after switching, the key frame used for switching is obtained, and the calibrated time synchronization supplementary enhancement information is embedded, so that the switching problem of the multiple video streams