Adaptive cross-component prediction for inter coded blocks

An apparatus, comprising one or more processors, wherein the one or more processors are operable to:

• responsive to a determination that a video block is coded in an inter coding mode, construct a candidate list for the video block for deriving a cross-component prediction mode for the video block, wherein the candidate list comprises cross-component prediction mode candidates,
• select a cross-component prediction mode for the video block from the candidate list,
• reconstruct a luma component for the video block, and
• reconstruct one or more chroma components for the video block from the reconstructed luma component using the cross-component prediction mode.

A method, comprising:

• reconstructing a luma component of a video block, the video block being coded in an inter coding mode,
• constructing a candidate list for the video block for deriving a cross-component prediction mode for the video block, wherein the candidate list comprises cross-component prediction mode candidates;
• selecting a cross-component prediction mode for the video block from the candidate list, and
• encoding one or more chroma components of the video block based on the reconstructed luma component and the selected cross-component prediction mode.

An apparatus, comprising one or more processors, wherein the one or more processors is operable to

• reconstruct a luma component of a video block, the video block being coded in an inter coding mode,
• construct a candidate list for the video block for deriving a cross-component prediction mode for the video block, wherein the candidate list comprises cross-component prediction mode candidates;
• select a cross-component prediction mode for the video block from the candidate list, and
• encode one or more chroma components of the video block based on the reconstructed luma component and the selected cross-component prediction mode.