Patent ID: 8411747

Claim:
An intra prediction mode selecting method of a video encoder, comprising: receiving a compress profile of a frame data; receiving a frame resolution of the frame data; selecting a plurality of corresponding intra prediction modes according to the compress profile and the frame resolution, and scheduling the intra prediction modes for sequentially calculating a plurality of corresponding cost functions; and comparing the cost functions to select one of the intra prediction modes to serve as a prediction mode of the frame data, wherein the compress profile comprises a high profile, a main profile or a base profile, the frame resolution comprises a high resolution or a general resolution, and the intra prediction modes comprise an I4 macro-block mode, an I8 macro-block mode, an I16 macro-block mode and a chroma mode, wherein steps of selecting the corresponding intra prediction modes according to the compress profile and the frame resolution comprise: selecting the I4 macro-block mode, the I16 macro-block mode and the chroma mode when the compress profile is the main profile and the frame resolution is the general resolution or the high resolution; selecting the I4 macro-block mode, the I16 macro-block mode and the chroma mode when the compress profile is the base profile and the frame resolution is the general resolution or the high resolution; selecting the I4 macro-block mode, the I16 macro-block mode and the chroma mode when the compress profile is the high profile and the frame resolution is the general resolution; and selecting the I8 macro-block mode, the I16 macro-block mode and the chroma mode when the compress profile is the high profile and the frame resolution is the high resolution.