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09 - IPTV and IP Video

Posted in Neothings by bill on the April 10th, 2006
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IPTV is a term that has a narrow definition that few people know, but is used widely by those that don’t know it’s definition to describe something else that I will call IP Video.
IPTV, or Internet Protocol Television is a standards based system that is largely used by video on demand providers and telcos. It can use a multicast protocol called IGMP for live events, or can use a streaming protocol called RTSP for video on demand type viewing. There are several hotel TV systems that are IPTV based, and SBC has big plans on rolling out IPTV over DSL. IPTV is something that you will most likely not come in contact with directly, but instead have a set top box provided by someone else as the gateway to an IPTV system. Someday there may be a provider that allows an end user to connect a regular PC to their IPTV network, but it’s not available to date.

IP Video on the other hand, is the term I will use to describe everything else that is video over the internet. Examples of this would be when you go to a website, and click to start watching a movie trailer, or CNN’s Pipeline news service. Also included in this broad definition of IP Video is having some stored content such as a movie server that is serving ripped DVDs to a set top box client which is connected over a Local Area Network, or LAN.
The LAN would typically be a 100Mbit/sec Ethernet network, but to meet the demand of several IP Video streams in the same residence, many are moving to 1Gbit/sec networks. A typical standard def stream can take up to 10Mbit/sec for DVD video, or up to 20Mbit/sec for HD video.

For viewing IP Video, a desktop PC can do the job, but for normal TV viewing applications there are several set top box clients that can playback stored content on a local server as well as stream content directly from the internet. A few manufacturers of these boxes are KISS, Buffalo, Zensonic, and AvelLink. This is also the target world for Windows Media Center Edition, or MCE. MCE in many cases would act as the video server, and an Xbox could act as the client with it’s Media Extender software.

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