VOD Techniques and Technologies used in Video On Demand
Online VOD
In general, bandwidth skimming is a common technique used to execute VOD and is capable of providing O(log n) scaling as the quantity of users rises.
In March 2006, Veotag, a software company based in New York released a new software suite that permits video streaming authors and end users to augment streaming videos with comments, descriptions, annotations and tables of content. A feature called the Active Table of Content enables the audience to skip to precise sections of a streaming video, or evaluate the video. The earliest "for profit" utilization of this software was in May 2006, whre it was installed at the Jazz at Lincoln Center, New York City Better Business Bureau and Saint Helen's Roman Catholic Church.
OIPV (Over IP Video)
Video Over IP is an up-and-coming technique with the intention of allowing VOD (video on demand) to be broadcast over IP (Internet Protocol). OIPV should not be confused with VOIP, which is restricted to voice transmission. It is able to broadcast content using both DSL lines and 3G telephone systems, since both use IP to communicate with the Internet. On demand video streaming (VOD) can consequently be received on cell phones and further wireless devices. Although a lot of companies are making headway in supplying this technology to consumers, an obvious money-making business strategy has been sluggish to materialize.
Near Video on Demand
NVOD (Near Video on Demand) is a PayPerView technology for consumer video employed by multi-channel television companies who use high-bandwidth distribution systems, for instance satellite or cable TV. Numerous instances of a show are transmitted at short intervals of time (usually 10 to 20 mins) which is expedient for customers, who can view the feature without requiring they watch using a fixed schedule. This technique is intensive in bandwidth use and is normally made available only through huge networks that have a immense amount of surplus capacity.