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Video feedback. Video feedback is the process that starts and continues when a video camera is pointed at its own playback video monitor.The loop delay from camera to display back to camera is at least one video frame time, due to the input and output scanning processes; it can be more if there is more processing in the loop.
Chroma key compositing, or chroma keying, is a visual-effects and post-production technique for compositing (layering) two or more images or video streams together based on colour hues ( chroma range). The technique has been used in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion ...
Ground loop (electricity) In an electrical system, a ground loop or earth loop occurs when two points of a circuit are intended to have the same ground reference potential but instead have a different potential between them. [ 1] This is typically caused when enough current is flowing in the connection between the two ground points to produce a ...
A background check is a process used by an organisation or person to verify that an individual is who they claim to be, and check their past record to confirm education, employment history, and other activities, and for a criminal record. The frequency, purpose, and legitimacy of background checks vary among countries, industries, and ...
Rickrolling or a Rickroll is an Internet meme involving the unexpected appearance of the music video to the 1987 hit song "Never Gonna Give You Up", performed by English singer Rick Astley. The aforementioned video has over 1.5 billion views on YouTube. The meme is a type of bait and switch, usually using a disguised hyperlink that leads to the ...
Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular vantage point. Direct motion or prograde motion is motion in the same direction as other bodies. While the terms direct and prograde are equivalent in this context, the former is the ...
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