Vehicular video processing device and vehicular video processing system

A vehicular video processing device receiving a video signal output from an external video device via a video signal receiving unit, the video signal having a predetermined video format and a first bit width and being transmitted together with a first clock signal, the vehicular video processing device comprising:

• a clock output unit outputting a second clock signal having a frequency acquired by multiplying a frequency of the first clock signal by a predetermined multiplier factor;
• an output unit converting the video signal having the first bit width to a video signal having a second bit width in accordance with the multiplier factor and outputting the video signal that is converted to have the second bit width together with the second clock signal, and the second bit width being smaller than the first bit width;
• a zero inserting unit;
• and
• an input switch unit, wherein
• the video signal receiving unit includes a plurality of channels and the external video device includes a plurality of sub devices,
• the channels of the video signal receiving unit are connected to the sub devices of the external video device, respectively, and the sub devices transmit a plurality of video signals having different predetermined video formats to the respective channels,
• one of the video signals which has a largest bit width is referred to as a specific video signal,
• the zero inserting unit inserts zero to at least one lower bit of each of the video signals other than the specific video signal until a bit width of each of the video signals becomes equal to the bit width of the specific video signal,
• the input switch unit selects and outputs one of the video signals each having an equal bit width with the bit width of the specific video signal,
• the output unit converts the video signal output from the input switch unit to the video signal having the second bit width and outputs the video signal that is converted to have the second bit width, and
• the second bit width is equal to a bit width used in an output destination or a multiple number of the bit width used in the output destination.