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Phil Hippensteel

Thoughts On AV Over IP

VIDEO AND IP TRANSPORT—NEW DIRECTIONS It has never been a trivial task to get video over IP networks. The need to move text data brought about IP networks. However, when voice was successfully and efficiently moved over these networks, engineers began to question whether video could also be transported on them. Video conferencing and IPTV were built on the concept that, if the network was not......

Phil Hippensteel on IP Video Performance

We often hear discussions about users’ quality of experience (QOE) relative to video. The term usually refers to subjective judgements about videos and audios that are played on a device. However, I believe that IT network administrators and AV professionals see the issue of video quality in different terms. Let’s explore this.The quality of the video that is played depends primarily on two......

Phil Hippensteel on AV Over IP Cabling

Few of us would argue IP is relatively new to the AV industry. There are many lessons we can learn from the experiences that telecom encountered when IP was first used in telephony. One of the notable lessons involved the enormous learning curve that faced telecom directors when they used copper cabling. Before VoIP, cables usually carried a 3 kz band of frequencies, which is enough to carry......

Phil Hippensteel on Video and IP Transport- New Directions

It has never been a trivial task to get video over IP networks. The need to move text data brought about IP networks. However, when voice was successfully and efficiently moved over these networks, engineers began to question whether video could also be transported on them. Video conferencing and IPTV were built on the concept that, if the network was not prone to loss, IP using UDP (User......

Phil Hippensteel on the Pros and Cons of HTTP

Hypertext Transfer Protocol (HTTP) has been the foundation of web browsing for more than thirty years. However, recently, it has become a preferred protocol for moving audio and video across the enterprise network and the Internet. Because it seems to be gaining popularity in the AV industry, we’re going to investigate it.In its original use, HTTP used TCP (Transmission Control Protocol) and......

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