Table of Contents
Advertisement
Key Info: (also called KeyKode Prefix) The part of the KeyKode number that does not fit into the user bits
of time code.
emulsion letter, and the first six KeyKode digits.
Letterbox: Placing a wide screen image on a conventional TV by placing black bands at the top and
bottom of the screen.
Linear time code:
(Also known as Longitudinal Time Code) A digital code used for timing and control
purposes on videotape and associated audio tape machines. It is recorded on a linear track
with audio characteristics and is referred to as LTC. Each 80 bit code word is associated with
one television frame, and consists of 26 time bits, 6 flag bits, 32 user bits and 16 sync bits. This
time code may run at 24, 25 or 30 frames per second depending on the video format. See also
SMPTE 12M
LTC:
See Linear Time Code
Matrix Time Code:
See Aaton Code
NTSC:
National Television Standards Committee established the television and video standard in use
in the United States, Canada, Japan and several other countries. NTSC video consists of 525
horizontal lines at a field rate of approximately 60 fields per second. (Two fields equal one
complete Frame). Only 487 of these lines are used for picture. The rest are used for sync or
extra information such as VITC and Closed Captioning.
PAL:
Phase Alternating Line. The television and video standard in use in most of Europe. Consists of
625 horizontal lines at a field rate of 50 fields per second. (Two fields equal one complete
Frame). Only 576 of these lines are used for picture. The rest are used for sync or extra
information such as VITC and Teletext.
Pixel:
The smallest distinguishable and resolvable area in a video image. A single point on the
screen.
In digital video, a single sample of the picture.
element.
Prefix:
The edge numbers are usually composed of a group of digits that remain constant throughout
the length of the roll, and a count number, which increments every foot or half foot. The
constant numbers, are referred to as the prefix. The count numbers are referred to as the
footage number.
RP201:
The SMPTE recommended practice for encoding film transfer information into standard
definition video signals (see 3 Line VITC).
RP215:
The SMPTE recommended practice for encoding film transfer information into vertical ancillary
data space for high definition video signals (VANC).
Serial digital: Digital information that is transmitted in serial form. Often used informally to refer to serial
digital television signals.
SMPTE (Society of Motion Picture and Television Engineers): A
recommends standards for the film and television industries.
OVERVIEW
The Key Info data normally consists of the film manufacturer ID, the film
Revision 1.3
9025TR Series Film Footage Encoders Manual
Derived from the words picture
professional
organisation
that
Page 1-8
Advertisement
Table of Contents
