A method and apparatus for use of an adaptive prediction resolution in video coding is disclosed. One or more adaptive flags are provided in one or more syntaxes of a prediction scheme in encoding and decoding video signals. In one embodiment, the adaptive flags are suitable to indicate whether a subset or a full set of intra prediction modes is used at a slice level or a coding block level. In one embodiment, the adaptive flags are suitable to indicate whether integer or fractional motion vector resolution is used at a slice level or a coding block level.