INTRA 4 X 4 MODES 3, 7 AND 8 AVAILABILITY DETERMINATION INTRA ESTIMATION AND COMPENSATION

An apparatus including a first processing circuit and a second precessing circuit. The first processing circuit may be configured to generate a plurality of reconstructed samples in response to one or more macroblocks of an input signal. The second processing circuit may be configured to determine availability of intra 4×4 prediction modes for each luma sub-block of a current macroblock in response to available reconstructed samples adjacent to the current macroblock.