Efficient mode decision for H.264/AVC frame-skipping transcoding

This paper proposes an efficient inter/intra mode decision for H.264/AVC frame-skipping transcoding. In the proposed algorithm, all information including mode, motion vector etc. are reused when the selected best frame is not skipped; while an efficient mode decision is employed when the best frame is dropped. The experimental results reveal that average 70% of computation time can be saved for the proposed H.264 frame-skipping transcoding algorithm, when compared with fully decoding/encoding procedure. The degradation in the rate-distortion performance is fairly small.