A fast intra coding algorithm was proposed which was suitable for enhancement layer in quality salability.Base on the coding structure of quality scalability

our algorithm used the relationships between layers

the relationships between rate distortion and modes

and temporal and spatial relationships to predict the modes and coding order to be ap-plied

with an early termination determined by the relationships between quantization parameters and modes

residual co-efficients

and rate distortion.The experimental results show that the encoding speed of the proposed algorithm can be improved by 70%

with negligible coding loss.