A Constant Quality MPEG - 1 Video Encoding Scheme and itsTra

In this paper, we introduce a video encoder control scheme for MPEG-1, which maintains the quality of the encoded video at a constant level. This scheme is based on a quantitative video quality measure, and it uses a feedback control mechanism to adjust the parameters of the encoder. We evaluate this scheme by applying it to several types of video sequences, and comparing it with the Constant Bit Rate (CBR) encoder control scheme in terms of quality and traac. We show that our scheme achieves better quality than the CBR scheme for the same average bit rate, particularly when the scene content varies signiicantly over time.