Reducing frame skipping in MPEG-4 rate control scheme
Frame skipping in low bit video coding could significantly reduce the visual quality of the reconstructed video. This paper analyzes the' main causes of frame skipping in current MPEG-4 frame rate control scheme, and presents a number of ways to reduce the occurrence of frame skipping. The main features of the new algorithm include an adaptive thresholding technique, an adaptive P-frame target bits allocation, and an adaptive I-frame target bits allocation. Experimental results show that the new rate control scheme has significantly reduced the risks of frame skipping without sacrificing the overall PSNR of the reconstructed video.