On the Error Resilience of Rate Smoothing using Explicit Slice-Based Mode Selection

Abstract

An encoder based rate smoothing scheme which uses explicit slicebased mode selection has been proposed recently. The algorithm provides significantly smoother bitstream from a variable bit rate (VBR) encoder and reduces the network queuing delay while maintaining quality for the end-user. In this paper we investigate the error robustness of the proposed scheme based on H.264/AVC codec. The results show that, the proposed scheme maintains error resilience properties without extra delay. Compared to the standard frame based scheme, the algorithm provides almost the same average distortion while reducing the distortion variance which helps improving the subjective video quality. We investigate the performance in random and bursty packet loss environments, and it shows that the proposed scheme is applicable for error prone networks, for example, wireless networks.

Characterization of slice-based H.264/AVC encoded video traffic using token buckets

“…2 The generated frames for the StEM clip, standard frame-based H.264/AVC and slice-based H.264/AVC encoded video, respectively upwards in the consecutive frames. The effects of overlap versus no-overlap are investigated in [18], and as expected the overlap option is most beneficial compared to no-overlap when the packet loss probability increases.…”