A video switch, comprising: a first input port; a first Transition Minimized Differential Signaling (TMDS) transmission channel coupled to the first input port and configured to transmit a first TMDS signal; a first Inter-Integrated Circuit (I2C) channel coupled to the first input port and configured to transmit a first I2C signal; a second input port; a second TMDS transmission channel coupled to the second input port and configured to transmit a second TMDS signal; a second I2C channel coupled to the second input port and configured to transmit a second I2C signal; a first switch unit, selectively coupled to the first I2C channel and the second I2C channel, when the first switch unit is coupled to the first I2C channel, the first switch unit receiving the first I2C signal from the first I2C channel and outputting the first I2C signal; a second switch unit, selectively coupled to the first TMDS transmission channel and the second TMDS transmission channel, when the second switch unit is coupled to the first TMDS transmission channel, the second switch unit receiving the first TMDS signal from the first TMDS transmission channel and outputting the first TMDS signal; a microcontroller unit coupled to the first switch unit and the second switch unit; and an output port coupled to the first switch unit and the second switch unit; wherein when switching from the first input port to the second input port: the first switch unit is coupled to the second I2C channel and outputs the second I2C signal to the output port, and after the first switch unit outputs the second I2C signal to the output port for a specified time period, the second switch unit starts to outputs the second TMDS signal to the output port; characterized in that the specified time period includes a time period for reading Extended Display Identification Data (EDID) and a time period for performing High-Bandwidth Digital Content Protection (HDCP) first authentication, and the specified time period is determined by the microcontroller unit monitoring the time period for reading the EDID and the time period for performing the HDCP first authentication; during the specified time period, the second switch unit outputs the first TMDS signal to the output port. a first input port; a first Transition Minimized Differential Signaling (TMDS) transmission channel coupled to the first input port and configured to transmit a first TMDS signal; a first Inter-Integrated Circuit (I2C) channel coupled to the first input port and configured to transmit a first I2C signal; a second input port; a second TMDS transmission channel coupled to the second input port and configured to transmit a second TMDS signal; a second I2C channel coupled to the second input port and configured to transmit a second I2C signal; a first switch unit, selectively coupled to the first I2C channel and the second I2C channel, when the first switch unit is coupled to the first I2C channel, the first switch unit receiving the first I2C signal from the first I2C channel and outputting the first I2C signal; a second switch unit, selectively coupled to the first TMDS transmission channel and the second TMDS transmission channel, when the second switch unit is coupled to the first TMDS transmission channel, the second switch unit receiving the first TMDS signal from the first TMDS transmission channel and outputting the first TMDS signal; a microcontroller unit coupled to the first switch unit and the second switch unit; and an output port coupled to the first switch unit and the second switch unit; wherein when switching from the first input port to the second input port: the first switch unit is coupled to the second I2C channel and outputs the second I2C signal to the output port, and after the first switch unit outputs the second I2C signal to the output port for a specified time period, the second switch unit starts to outputs the second TMDS signal to the output port; characterized in that the specified time period includes a time period for reading Extended Display Identification Data (EDID) and a time period for performing High-Bandwidth Digital Content Protection (HDCP) first authentication, and the specified time period is determined by the microcontroller unit monitoring the time period for reading the EDID and the time period for performing the HDCP first authentication; during the specified time period, the second switch unit outputs the first TMDS signal to the output port. the first switch unit is coupled to the second I2C channel and outputs the second I2C signal to the output port, and after the first switch unit outputs the second I2C signal to the output port for a specified time period, the second switch unit starts to outputs the second TMDS signal to the output port; characterized in that the specified time period includes a time period for reading Extended Display Identification Data (EDID) and a time period for performing High-Bandwidth Digital Content Protection (HDCP) first authentication, and the specified time period is determined by the microcontroller unit monitoring the time period for reading the EDID and the time period for performing the HDCP first authentication; during the specified time period, the second switch unit outputs the first TMDS signal to the output port.