A decoder for decoding a bitstream of coded scalable video, the decoder configured to: receive a bitstream of coded video including a base layer, one or more enhancement layers and a video parameter set comprising scalability information about each layer, wherein the video parameter set includes a flag which indicates whether scalability dimension identifiers are implicitly or explicitly signaled, a scalability mask indicating the presence or absence of a plurality of scalability dimensions in a respective layer in the bitstream, and a maximum value of the scalability dimension identifiers for each scalability dimension from the plurality of scalability dimensions for each layer, wherein said maximum value of the scalability dimension identifiers is explicitly signaled when the flag indicates that said scalability dimension identifiers are implicitly signaled; wherein each scalability dimension identifier specifies a scalability dimension of a layer of the one or more enhancement layers and the base layer; determine based on the flag whether the scalability dimension identifier is implicitly or explicitly signaled; decode the bitstream of coded video using the base layer and the one or more enhancement layers, and infer scalability dimension identifiers from the bitstream of coded video during the decoding in response to determining that the scalability dimension identifier is implicitly signaled, wherein said inferring is based on said maximum value of the scalability dimension identifiers, and retrieve scalability dimension identifiers explicitly signaled in the video parameter set in response to determining that scalability dimension identifiers are explicitly signaled. receive a bitstream of coded video including a base layer, one or more enhancement layers and a video parameter set comprising scalability information about each layer, wherein the video parameter set includes a flag which indicates whether scalability dimension identifiers are implicitly or explicitly signaled, a scalability mask indicating the presence or absence of a plurality of scalability dimensions in a respective layer in the bitstream, and a maximum value of the scalability dimension identifiers for each scalability dimension from the plurality of scalability dimensions for each layer, wherein said maximum value of the scalability dimension identifiers is explicitly signaled when the flag indicates that said scalability dimension identifiers are implicitly signaled; wherein each scalability dimension identifier specifies a scalability dimension of a layer of the one or more enhancement layers and the base layer; determine based on the flag whether the scalability dimension identifier is implicitly or explicitly signaled; decode the bitstream of coded video using the base layer and the one or more enhancement layers, and infer scalability dimension identifiers from the bitstream of coded video during the decoding in response to determining that the scalability dimension identifier is implicitly signaled, wherein said inferring is based on said maximum value of the scalability dimension identifiers, and retrieve scalability dimension identifiers explicitly signaled in the video parameter set in response to determining that scalability dimension identifiers are explicitly signaled.