Video distribution test system for evaluating image quality by determining spread of frame loss within refreshment interval

摘要

A video distribution test system for performing simplified measurement under assumed conditions closer to the actual situation, and for performing tests for effective applications. The system includes a video packet simulator for defining different packet loss rates and simulating packet loss in video packets transmitted from the video distributing server for each packet loss rate, so as to produce defective video streams and evaluate an image quality of each defective stream, and producing a conversion table between the packet loss rate and the image quality; a pseudo-load generator for issuing pseudo-distribution requests from clients to the video distributing server; a packet quality monitor for receiving video packets from the server and calculating a packet loss rate for each client by detecting packet loss; and an image quality evaluating section for evaluating the image quality for each client based on the calculated packet loss rate and the conversion table.