A transmitting method of a playback device that transmits a HDR video signal to a display device, the transmitting method comprising: determining by the playback device whether an HDMI version of a transmission protocol which can establish connection with the display device is a first HDMI version which does not support transmission of dynamic HDR meta data or a second HDMI version which supports transmission of dynamic HDR meta data, when the HDMI version of the transmission protocol is the first HDMI version, transmitting static HDR meta data to the display device without transmitting dynamic HDR meta data to the display device, the transmission protocol connecting the playback device and the display device, the static HDR meta data including information that is commonly used for a plurality of images included in a video signal which is continuously played back and relates to a luminance range of the video signal, and the dynamic HDR meta data including information that is commonly used for a unit subdivided compared to the continuous playback unit of the video signal and relates to the luminance range of the video signal; and when the HDMI version of the transmission protocol is the second HDMI version, transmitting the static HDR meta data and the dynamic HDR meta data to the display device, when the HDMI version of the transmission protocol is the first HDMI version, performing a conversion process of converting the HDR video signal into either an SDR video signal to match a luminance range supported by the display device or into another HDR video signal of a narrower luminance range by using the dynamic HDR meta data, and transmitting the SDR video signal or the other HDR video signal to the display device. determining by the playback device whether an HDMI version of a transmission protocol which can establish connection with the display device is a first HDMI version which does not support transmission of dynamic HDR meta data or a second HDMI version which supports transmission of dynamic HDR meta data, when the HDMI version of the transmission protocol is the first HDMI version, transmitting static HDR meta data to the display device without transmitting dynamic HDR meta data to the display device, the transmission protocol connecting the playback device and the display device, the static HDR meta data including information that is commonly used for a plurality of images included in a video signal which is continuously played back and relates to a luminance range of the video signal, and the dynamic HDR meta data including information that is commonly used for a unit subdivided compared to the continuous playback unit of the video signal and relates to the luminance range of the video signal; and when the HDMI version of the transmission protocol is the second HDMI version, transmitting the static HDR meta data and the dynamic HDR meta data to the display device, when the HDMI version of the transmission protocol is the first HDMI version, performing a conversion process of converting the HDR video signal into either an SDR video signal to match a luminance range supported by the display device or into another HDR video signal of a narrower luminance range by using the dynamic HDR meta data, and transmitting the SDR video signal or the other HDR video signal to the display device. performing a conversion process of converting the HDR video signal into either an SDR video signal to match a luminance range supported by the display device or into another HDR video signal of a narrower luminance range by using the dynamic HDR meta data, and transmitting the SDR video signal or the other HDR video signal to the display device.