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Category: Video Lingo

Key


Key – Part of a video image that is “cut out” (like a key hole in a door) and replaced with another image, such name slates, song lyrics, and background images. The weather segment on the news uses a “chroma-key”, where the weather man stands in from of a blue screen and then the blue is “cut out” of the image and replaced with a weather map. A Key can also be a Picture-in-Picture box (such as an over-the-shoulder picture on a news cast), a logo (such as the ABC, CBS, or NBC logos on the bottom right corner of the screen during a show), or a scrolling message board like sports scores or news headlines. A keyer is a device that accomplishes this but doesn’t generate the actual content.

 

Handheld Camera/ROV


Handheld Camera/ROV – A camera that an operator holds rather than using a tripod. Handheld cameras are mobile and can get shots and angles that other cameras can’t, like side shots, audience shots, and close up shots on musicians and musical instruments. Hand held camera not only add flexibility, but can see things that the audience can’t see for themselves.Handheld Camera/ROV

HDMI


HDMI – High Definition Multimedia Interface. HDMI is an interface standard used to carry video and audio signals from a source (such as a BluRay player) to a display. HDMI also contains copy protection called HDCP to prevent digital copies of Copyrighted content. A display, like a TV, will accept HDCP enabled content, but a recorder will not. So, if a source and a display do not agree over content protection (often referred to as a “handshake”), the signal will not pass.

 Tech Head Note – In the consumer AV market most devices have HDCP enabled. In the professional AV market, this is not always the case. Many production switchers and recorders now have HDMI inputs but are usually not HDCP enabled. So, if a BluRay player is hooked up to a production switcher and is trying to play a store-bought movie it most likely will not work. Most laptop computers now come with an HDMI output but sometimes the “handshake” doesn’t happen. Most new camcorders and cameras have HDMI connectivity, which will almost always work as they are not copyright protected.

HD – High Definition


HD – High Definition (also see “Resolution”) –A video format with much greater detail than standard definition video. HD is typically found in 3 formats: 1080p (1920 pixels x 1080 pixels progressive scanned), 1080i (1920 pixels x 1080 pixels interlaced) and 720p (1280 pixels x 720 pixels progressive scanned). Both are 16:9 (widescreen) aspect ratio.

DVI – A digital video display


DVI – A digital video display interface used to connect a video source, such as a computer graphics card, to a display device, such as a computer monitor. DVI comes in a few flavors and connector types, so one DVI connector may not be compatible with another. Some DVI connections may carry analog video in addition to digital, some carry greater bandwidth. Digital DVI signals are often compatible with HDMI, but not always.DVI – A digital video display

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