An upstream keyer is a video processing tool used in live production and broadcasting to overlay graphics, images, or video on top of a primary video source before it is sent to the output. This allows for real-time compositing of elements such as lower thirds, logos, or other visual effects, enhancing the overall production quality. The term "upstream" indicates that this processing occurs before the final output, differentiating it from downstream keyers that apply effects after the main video signal has been created.
S. E. J. Keyer has written: 'De macht van de onmacht' -- subject(s): Economic conditions, Social conditions
He invented Morse code and the device called a Keyer to send the code.
upstream
Upstream - newspaper - was created in 1996.
downstream and upstream
The duration of Swimming Upstream is 3240.0 seconds.
The duration of Upstream - film - is 3600.0 seconds.
assembly upstream and downstream in ammetres
when a body moves against the flow, it is known as upstream flow
Swimming Upstream was created on 2003-02-27.
Upstream - film - was created on 1927-01-30.
Upstream Tracker was created on 2010-05-05.