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Major TV network delivery here in L.A.
NTSC 29.97 Drop frame
48K 16bit
00:58:00:02 - 00:58:30:00 - black
00:58:30:00 - 00:59:30:00 - bars and tone (1k, -20db)
00:59:30:00 - 00:59:40:00 - black
00:59:45:00 - 00:59:50:00 - program slate, no audio
00:59:50:00 - 01:00:00:00 - black , Only Discovery Channel requires a 1 frame 1K tone countoff on each second from
00:59:50:00 to 00:59:58:00 inclusive.
01:00:00:00 - program start
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