The video distribution amplifier can split any HD/SD-SDI serial digital video signal into multiple signals, outputting them to various high-definition/satellite TV sets, projection devices, and large display screens without delay or distortion. This greatly facilitates simultaneous use, viewing, or sharing of the same digital high-definition serial video signal by multiple users without any lag. High-definition SDI distributors have been widely applied in broadcasting, outdoor large-screen display systems, multimedia conference systems, command monitoring centers, intelligent transportation, airports, and many other fields. The product has passed the test of the Radio and Television Measurement Center of the State Administration of Radio, Film and Television, and all indicators meet the technical requirements. It has also won the network certification certificate of radio and television equipment of the State Administration of Radio, Film and Television.