Title :
Single-Pass Rate-Smoothed Video Encoding With Quality Constraint
Author :
Wu, Jianhua ; Cai, Jianfei ; Chen, Chang Wen
Author_Institution :
Nanyang Technol.Univ., Singapore
Abstract :
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.
Keywords :
low-pass filters; smoothing methods; video coding; arithmetic averaging filter; low-pass filtering; rate smoothing problem; single-pass rate-smoothed video encoding; video delivery; video quality constraint; Arithmetic; Bandwidth; Bit rate; Encoding; Filtering; Low pass filters; Smoothing methods; Streaming media; Video coding; Video sequences; Bit allocation; rate smoothing; single-pass video coding; variable bit rate video coding;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2007.896376