Abstract: According to the intra prediction in H.264/AVC, a novel self-adaptive fast algorithm for intra prediction is
proposed. First, the computational complexity of intra prediction is decreased based on the spatial/temporal correlation of
the video sequence. Then, by using the quantization parameter, we adaptively change two key parameters to guarantee the
precision of the fast intra prediction method. Simulation results show that intra macroblock encoding of H.264/AVC is
obviously speeded up using the proposed technique. Furthermore, this algorithm is compatible with H.264/AVC, and can be used
in practice.

Key words: video communication, H.264/AVC, intra prediction, spatial/temporal correlation, quantization parameter