Abstract
The internet protocol television service (IPTV) has become a key product for internet service providers (ISP), offering several benefits to both ISP and end-users. Because packet networks based on internet protocol have not been prepared for time-sensitive services, such as voice or video, packet networks have had to adopt several mechanisms to secure minimal transmission standards in the form of data stream prioritization. There are two commonly used approaches for video quality assessment. The first approach needs an original source for comparison (full-reference objective metrics), and the second one requires observers for subjective evaluation of video quality. Both approaches are impractical in real-time transmission because it is difficult to transform an objective score into a subjective quality perception, and on the other hand, subjective tests are not able to be performed immediately. Since many countries worldwide put IPTV on the same level as other broadcasting systems (e.g., terrestrial, cable, or satellite), IPTV services are subject to regulation by the national regulation authority. This results in the need to prepare service qualitative criteria and monitoring tools capable of measuring end-user satisfaction levels. Our proposed model combines the principles of both assessment approaches, which results in an effective monitoring solution. Therefore, the main contribution of the created system is to offer a monitoring tool able to analyze the features extracted from the video sequence and transmission system and promptly translate their impact into a subjective point of view.
Highlights
The television broadcasting transmitted over packet networks has rapidly become an important service for internet service providers (ISP)
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Summary
The television broadcasting transmitted over packet networks has rapidly become an important service for internet service providers (ISP). Packet networks had not been prepared to transmit time-sensitive services. This problem was solved by adopting a prioritization strategy which focuses on the processing of real-time services by routers with guaranteed preference. Widely-used transport protocol for real-time services (often presented by the marketing term triple play services)—UDP—offers unreliable connectionless communication without any guarantee of delivery. This could potentially lead to packet loss, especially within networks with a high utilization level caused by the lack of bandwidth
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