Efficient Video Stream Switching with Progressive S-Frames

In this paper, an efficient bitstream switching using the progressive S-frames is presented. The progressive S-frame approach can effectively switch two pre-encoded streams with different quantization steps by reducing progressively the quantization mismatch. The progressive S-frames can provide better coding efficiency than a single S-frame. The simulation results show that the proposed method is useful for the bit rate adaptation in heterogeneous networks.