Network-Adaptive Video Communication Using Packet Path Diversity and Rate-Distortion Optimized Reference Picture Selection

Abstract

Abstract. In this paper, we present error-resilient Internet video transmission using path diversity and ratedistortion optimized reference picture selection. Under this scheme, the optimal packet dependency is determined adapting to network characteristics and video content, to achieve a better trade-off between coding efficiency and forming independent streams to increase error-resilience. The optimization is achieved within a rate-distortion framework, so that the expected end-to-end distortion is minimized under the given rate constraint. The expected distortion is calculated based on an accurate binary tree modeling with the effects of channel loss and error concealment taken into account. With the aid of active probing, packets are sent across multiple available paths according to a transmission policy which takes advantage of path diversity and seeks to minimize the loss rate. Experiments demonstrate that the proposed scheme provides significant diversity gain, as well as gains over video redundancy coding and the NACK mode of conventional reference picture selection.

Design and Evaluation of a Parallel Invocation Protocol for Transactional Applications over the Web

“…Recent works close to our approach exploit path diversity and redundancy for Quality-ofService (QoS) purposes in content delivery applications, such as parallel file downloads [15,19,21], cooperative Web cache sharing [37,71], multimedia streaming [6,40], real-time voice communication [41] and access to non-transactional Web-services [49]. Generally speaking, a promising result highlighted in [6,19] is that existing content/service delivery (overlay) infrastructures seem to have the intrinsic potential for providing uncorrelated network paths among a client and multiple edge servers, even though these infrastructures were originally designed to minimize distance from clients to edge servers rather than for maximizing path disjointness.…”

Impact of Frame Loss Position on Transmitted Video Quality: Models and Improvements

“…Hence, error resilient video communication has been subject to extensive studies and improvements in this field have been significant. Example of well-investigated proposed solutions in this field are Forward Error Correction (FEC) [3], path diversity with multiple description video [4] [5], packet interleaving [2], and Intra/Inter-mode switching [6]. The accuracy of distortion prediction caused by packet/frame loss is the main issue in these methods.…”