Video signal processing device, video signal processing method, recording medium, and signal processing circuit

A video signal processing method that is performed by a video signal processing device that includes a first signal processor and a second signal processor, the first signal processor receiving input of a plurality of video signals, each including a plurality of packets, and multiplexing the plurality of video signals to output a multiplexed video signal, and the second signal processor receiving input of the multiplexed video signal and demultiplexing the multiplexed video signal to output the plurality of video signals,

• the video signal processing method comprising:
• when deficient data whose size is less than a size of one packet is detected in any of the plurality of video signals, performing one of (i) processing for discarding the deficient data detected and (ii) processing for adding dummy data to the deficient data detected to make a size of the deficient data equal to a size of an integral multiple of one packet.

A signal processing circuit configured to:

• receive input of a plurality of video signals, each including a plurality of packets, and multiplex the plurality of video signals to output a multiplexed video signal;
• and
• transmit a notification for starting detection processing for detecting deficient data whose size is less than a size of one packet.