A method of operation in a first device, the method comprising: receiving a first data stream that is compliant with a first multimedia communication standard, wherein the first multimedia communication standard is a high-definition multimedia interface (HDMI) 2.0 standard, the first data stream including: first video data of a first incoming video frame, second video data of a second incoming video frame, information describing a transfer function for color information of the second video data, the information included in a video blanking interval of the first incoming video frame; extracting the information describing the transfer function for the second video data from the first data stream, wherein the extracted information includes dynamic high-dynamic-range (D-HDR) metadata for the second video data stored in vendor specific infoframes (VSIF); generating a second data stream that is compliant with a second multimedia communication standard, wherein the second multimedia communication standard is a HDMI 2.1 standard, the second data stream comprising: the first video data in a first outbound video frame, the second video data in a second outbound video frame, and the extracted information describing the transfer function for color information of the second video data, the extracted information being included in a video blanking interval of the second outbound video frame and stored in extended metadata packets; and transmitting the second data stream to a second device. receiving a first data stream that is compliant with a first multimedia communication standard, wherein the first multimedia communication standard is a high-definition multimedia interface (HDMI) 2.0 standard, the first data stream including: first video data of a first incoming video frame, second video data of a second incoming video frame, information describing a transfer function for color information of the second video data, the information included in a video blanking interval of the first incoming video frame; first video data of a first incoming video frame, second video data of a second incoming video frame, information describing a transfer function for color information of the second video data, the information included in a video blanking interval of the first incoming video frame; extracting the information describing the transfer function for the second video data from the first data stream, wherein the extracted information includes dynamic high-dynamic-range (D-HDR) metadata for the second video data stored in vendor specific infoframes (VSIF); generating a second data stream that is compliant with a second multimedia communication standard, wherein the second multimedia communication standard is a HDMI 2.1 standard, the second data stream comprising: the first video data in a first outbound video frame, the second video data in a second outbound video frame, and the extracted information describing the transfer function for color information of the second video data, the extracted information being included in a video blanking interval of the second outbound video frame and stored in extended metadata packets; and the first video data in a first outbound video frame, the second video data in a second outbound video frame, and the extracted information describing the transfer function for color information of the second video data, the extracted information being included in a video blanking interval of the second outbound video frame and stored in extended metadata packets; and transmitting the second data stream to a second device.