Multimedia processing method and device and server

The embodiment of the invention provides a multimedia processing method and device and a server. The method comprises the steps: when a multimedia information issuing request is received, obtaining multimedia information requested to be issued; detecting whether the multimedia information contains watermark information or not; if the multimedia information contains the watermark information, searching preset topic information for topic information matched with the watermark information; issuing the multimedia information, and issuing the topic information matched with the watermark information. According to the multimedia processing method, the information utilization rate of the watermark information can be improved, the topic information issuing mode is expanded, and the intelligence is improved.