Advertising copy requires a unique identifier supplied by the advertising agency and approved by Clearcast.
For tape copy
The box must be marked externally with the clock numbers of each item on the tape, and there must be a log sheet inside listing for each item submitted:
- Timecode of start of message
- Identifier/clock number
- Item active duration
- Product name
The first (or only) item must be recorded such that the start of message is at timecode 10:00:00:00 with any subsequent items to have SOM's at integer minutes. LTC and VITC must match, be phase coherent with video, be continuous and contiguous, and must not pass through 00:00:00:00. VITC must be on line 19 & 21 pairs.
The recording must start with a line-up signal consisting of at least 1 min of line-up reference comprising:
- Video: 100% colour bars
- Audio: reference tone on each track, comprising 400Hz or 1 kHz tone at 0dBu (-18 dBFS, PPM 4), phase coherent, on tracks 1 and 2.
For all copy
A clock is to precede each item for at least 20 seconds duration. The clock should identify:
- Product name
- Identifier/Agency copy number (clock number)
- Commercial item duration
- ‘Teletext 888’ if subtitles are present
- Stereo or mono audio
Black and silence should exist for 3 seconds between the clock and the first frame of picture.
Note: The start of message is measured from the first frame of active picture. Vision fade-ups are acceptable - in which
case the first non-black frame is taken to be the start of message.
