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and why do they need dead time anyway - just go to the newsreader?
I can probably answer this one for you. My only experience is of independent radio and IRN News but I assume it works the same for TV. The News is probably being fed to local BBC stations and/or BBC/other TV stations in other countries. Those stations HAVE to know EXACTLY what time the news bulletin will start so they can backtime their own programme and bring in the news at exactly the right time. They all use radio-controlled clocks which keep perfect time and the presenters know that when that second hand hits the hour (or half-hour or whatever), the News will start, whether you're ready for it or not. |
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What I forgot to add is that that countdown BBC clock doesn't necessarily run for 60 seconds. It's probably two to three minutes long and the graphics and the music track are both designed in such a way that they can launch it whenever they're ready and it'll look and sound perfectly natural. So whoever's presenting the item before the main news starts doesn't have to finish at an exact time, just roughly somewhere about 60 to 30 seconds before the news comes in. It's a good system.
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I think the seconds are divided in to 1/25ths which represent each frame (TV is output at 25 frames per second).
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