A video signal processing device includes: a stereo conversion unit which generates a stereo superimposed signal by performing stereo conversion processing on a superimposed signal obtained by superimposing, on a two-dimensional video signal, an additional information signal indicating additional information to be combined with a two-dimensional video and displayed, and shifts a first locating signal indicating a position of the additional information in the two-dimensional video, according to an amount of shift caused by the stereo conversion processing on the additional information signal, to generate a second locating signal indicating a position of the additional information in a video indicated by the stereo superimposed signal; and a correction unit performs, on the stereo superimposed signal, quality correction for an area other than an area located by the second locating signal.