An Overview of IPTV Standards Development

Understanding Timelines Within MPEG Standards

“…Two main approaches for media delivery can be distinguished: broadcast and broadband [1]. Broadcast refers to the simultaneous delivery of media to all the users.…”

“…In this context, two main forms of media streaming can be distinguished: managed and unmanaged [1] [2] [29] [30]. Managed services, such as cable TV or IPTV, are quoted services that operate within privately owned walled-garden IP environments.…”

“…For broadband delivery, Real-Time Transport Protocol (RTP) [3] and HTTP-based Adaptive Streaming (HAS) solutions are commonly used [1]. For instance, MPEG has proposed Dynamic Adaptive Streaming over HTTP (MPEG-DASH) [4], as a client-driven streaming solution that aims at improving the adaptability, smoothness and continuity of media play-out under variable network conditions.…”

“…This is essential for reconstructing the original timing of the individual incoming media streams at the receiver-side (especially relevant in 1 www.hbbtv.org packet-switched networks because of the delay variability), as well as for concurrently aligning the play-out for the related media streams in the time domain. If multiple media streams from multiple sources need to be synchronized within specific receivers, it is necessary to comprehensively understand how all media delivery standards internally deal with timelines (clock references and timestamps) to reproduce (i.e., time-align) encoder/source media clock to the decoder/receiver media clock.…”

Secure and Reliable IPTV Multimedia Transmission Using Forward Error Correction

“…Generally, IPTV has multifaceted content such as video/audio/text/graphic/data and needs to provide the userrequired quality of experience (QoE), interactivity, security, and reliability in the IP-based networks [1]. The typical IPTV applications include the cable TV-like service and video on demand (VoD).…”