Push video on demand is a technique used by a number of broadcasters on systems that lack connectivity to provide true video on demand or by broadcasters who want to optimize their video streaming infrastructure by pre-loading the most popular contents to the consumer device. A push VOD system uses a personal video recorder (PVR) to store a selection of content, often transmitted in spare capacity overnight or all day long at low bandwidth. Users can watch the downloaded content at the time they desire, immediately and without any buffering issue. As content occupies space on the PVR hard drive, downloaded content is usually deleted after a week to make way for newer programs. The limited space on a PVR hard drive means that the selection of programs is usually restricted to most popular content. A new generation of Push VOD solution recently appeared on the market which, by using efficient error correction mechanisms, can free significant amount of bandwidth and that can deliver more than video e.g. magazines, interactive applications.
Read more about this topic: Television On Demand
Famous quotes containing the words push, video and/or demand:
“The young elm that must be cut
because its roots push at the house wall
taps and scrapes my window
urgently but when I look round at it
remains still.”
—Denise Levertov (b. 1923)
“We attempt to remember our collective American childhood, the way it was, but what we often remember is a combination of real past, pieces reshaped by bitterness and love, and, of course, the video past—the portrayals of family life on such television programs as “Leave it to Beaver” and “Father Knows Best” and all the rest.”
—Richard Louv (20th century)
“Most of the ladies and gentlemen who mourn the passing of the nation’s leaders wouldn’t know a leader if they saw one. If they had the bad luck to come across a leader, they would find out that he might demand something from them, and this impertinence would put an abrupt and indignant end to their wish for his return.”
—Lewis H. Lapham (b. 1935)