A method of decoding multilayer video data comprising a plurality of layers, the method comprising: receiving a video parameter set, VPS, and a VPS extension, the VPS extension including: a layer_id_in_nuh[ i] syntax element for each layer i of the plurality of layers, and a video usability information, VUI, parameters index syntax element for each layer i of the plurality of layers,, wherein the VUI parameters index syntax element for each layer i of the plurality of layers specifies an index which identifies, from a set of VUI parameters syntax structures in the VPS, a VUI parameters syntax structure that applies to the layer of the plurality of layers with a layer ID equal to layer_id_in_nuh[ i], and wherein each VUI parameters syntax structure of the set of VUI parameters syntax structures includes one or more of the following parameters, video_format, video_full_range_flag, colour_primaries, transfer_characteristics, or matrix_coeffs, wherein the video_format parameter indicates a format of a representation of pictures to be coded, the video_full_range_flag parameter indicates a black level and a range of luma and chroma signals, the colour_primaries parameter indicates chromaticity coordinates of source primaries, the transfer_characteristics parameter indicates an opto-electronic transfer characteristic of a source picture, and the matrix_coeffs parameter describes matrix coefficients used in deriving luma and chroma signals from green, blue, and red primaries; and decoding the multilayer video data based on at least one of the syntax structures. receiving a video parameter set, VPS, and a VPS extension, the VPS extension including: a layer_id_in_nuh[ i] syntax element for each layer i of the plurality of layers, and a video usability information, VUI, parameters index syntax element for each layer i of the plurality of layers,, wherein the VUI parameters index syntax element for each layer i of the plurality of layers specifies an index which identifies, from a set of VUI parameters syntax structures in the VPS, a VUI parameters syntax structure that applies to the layer of the plurality of layers with a layer ID equal to layer_id_in_nuh[ i], and wherein each VUI parameters syntax structure of the set of VUI parameters syntax structures includes one or more of the following parameters, video_format, video_full_range_flag, colour_primaries, transfer_characteristics, or matrix_coeffs, wherein the video_format parameter indicates a format of a representation of pictures to be coded, the video_full_range_flag parameter indicates a black level and a range of luma and chroma signals, the colour_primaries parameter indicates chromaticity coordinates of source primaries, the transfer_characteristics parameter indicates an opto-electronic transfer characteristic of a source picture, and the matrix_coeffs parameter describes matrix coefficients used in deriving luma and chroma signals from green, blue, and red primaries; and a layer_id_in_nuh[ i] syntax element for each layer i of the plurality of layers, and a video usability information, VUI, parameters index syntax element for each layer i of the plurality of layers,, wherein the VUI parameters index syntax element for each layer i of the plurality of layers specifies an index which identifies, from a set of VUI parameters syntax structures in the VPS, a VUI parameters syntax structure that applies to the layer of the plurality of layers with a layer ID equal to layer_id_in_nuh[ i], and wherein each VUI parameters syntax structure of the set of VUI parameters syntax structures includes one or more of the following parameters, video_format, video_full_range_flag, colour_primaries, transfer_characteristics, or matrix_coeffs, wherein the video_format parameter indicates a format of a representation of pictures to be coded, the video_full_range_flag parameter indicates a black level and a range of luma and chroma signals, the colour_primaries parameter indicates chromaticity coordinates of source primaries, the transfer_characteristics parameter indicates an opto-electronic transfer characteristic of a source picture, and the matrix_coeffs parameter describes matrix coefficients used in deriving luma and chroma signals from green, blue, and red primaries; and decoding the multilayer video data based on at least one of the syntax structures.