Single-pass rate-smoothed video encoding with quality constraint

In this letter, we study the rate smoothing problem in single-pass video encoding, i.e., given a certain video quality constraint, how to smooth out the traffic rate so that the complexity of the video delivery can be reduced. We apply the low-pass filtering idea, originally proposed for single-pass quality-smoothed video encoding, into the problem of rate-smoothed video encoding. In particular, we use the arithmetic averaging filter to smooth out the rate during single-pass video encoding. Both theoretical analysis and experimental results show that our proposed scheme can not only smooth out the bit rate but also automatically achieve the targeted average video quality.