Duplication of Key Frames of Video Streams in Wireless Networks

TL;DR

This paper investigates packet duplication strategies in wireless video streaming, demonstrating that duplicating key frame packets significantly enhances video quality amidst network impairments.

Contribution

It introduces and tests a packet duplication method focused on key frames to improve wireless video transfer quality.

Findings

Duplicating key frame packets yields the best video quality improvements.

Packet duplication of all frames is less effective than focusing on key frames.

Video quality depends strongly on packet loss and network jitter coefficients.

Abstract

In this paper technological solutions for improving the quality of video transfer along wireless networks are investigated. Tools have been developed to allow packets to be duplicated with key frames data. In the paper we tested video streams with duplication of all frames, with duplication of key frames, and without duplication. The experiments showed that the best results are obtained by duplication of packages which contain key frames. The paper also provides an overview of the coefficients describing the dependence of video quality on packet loss and delay variation (network jitter).