Video synthesis method and device

The invention discloses a video synthesis method and device. The video synthesis method comprises the following steps: a server determines the starting time and the ending time of a camera device through the camera device, and the starting time and the ending time are respectively the time when a target enters and leaves a region of interest of the camera device; the server calls an activity video of the target in the attention area corresponding to each camera device based on the starting time and the ending time of each camera device; the server synthesizes the activity videos shot by the plurality of camera devices; or the server sends the activity video shot by each camera device to the user terminal, so that the user terminal synthesizes the activity videos shot by the plurality of camera devices. According to the invention, videos shot by a plurality of camera devices can be automatically synthesized, and manual synthesis is not needed. 本申请公开了一种视频合成方法及装置。其中，该视频合成方法包括：服务器通过摄像装置确定摄像装置的开始时间和结束时间，开始时间和结束时间分