Evolução do comportamento dos usuários em serviços de streaming de vídeo em larga escala

Abstract

Video streaming is responsible for most of the traffic flowing on the Internet nowadays, which leads to massive investments in the infrastructure from the main content providers like Netflix, Youtube, and Hulu. In the past few years, these investments generated multiple changes in the transmission infrastructure, improving the content delivery networks (CDN), enhancing the computer processing power and changing the transmission technology used. The ultimate goal of the content providers when making these investments is to transmit streaming video over the Internet with the best quality as possible to please their clients and stand out from their competitors. In this sense, it is necessary to have metrics capable of capturing the impact imposed on the servers, user behavior, and in the quality of the video to know how changes in the transmission infrastructure affect user engagement. In this context, in this work, we characterize the evolution of transmission infrastructure, user behavior, and quality of experience from live video streaming systems over the Internet, using for this purpose the logs generated from the transmission of the 2014 and 2018 FIFA World Cups that were transmitted by the biggest content provider located in Brazil. Some of the results in this work show that traffic has increased more than 300% and the average public increased about 175%. The arrival rate also changed and now it is more concentrated at the beginning of the 1st and 2nd half of the match. Besides that, user engagement was evaluated using different metrics and, in general, it has increased in the 2018 tournament for all metrics.