Follow @shonalika @ghost_bird

they started this around the 90s, when I was working in broadcast engineering in late 90s I set up studio kit for LWT (ITV London) and noticed they had a "roofcam" on the video sources - this was used for the news so the "live window" of London you saw behind the newsreaders wasn't always live, the window was obscured and a green screen put in front of it, and the roofcam feed was be replaced with recorded footage if activists tried to assemble in its viewpoint..

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