Society of Motion Picture and Television Engineers - RP 157:2012

Key and Alpha Signals

active - Reaffirmed
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Organization: Society of Motion Picture and Television Engineers
Publication Date: 1 November 2012
Status: active
Page(s): 1 - 7
ICS Code (Audio, video and audiovisual systems in general): 33.160.01
ICS Code (33.17): 33.17
ISBN (Electronic): 978-1-61482-704-7
DOI: 10.5594/SMPTE.RP157.2012
Standard:

This document describes the requirements for the key, alpha or matte signal with respect to its associated fill. In the remainder of the document the term "key" is used, but the requirements are... View More

Document History

RP 157:2012
November 1, 2012
Key and Alpha Signals
This document describes the requirements for the key, alpha or matte signal with respect to its associated fill. In the remainder of the document the term “key” is used, but the requirements are...
April 20, 1999
For Motion-Picture Film (8-mm Type S) — Camera Aperture Image and Usage
(1.1) This standard specifies the dimensions of the camera aperture image and its relative position to the reference edge and the perforations of 8-mm type S motion-picture film, as specified in...
January 1, 1995
Key Signals
This practice describes the format of a key video signal which is used to control the contribution of an associated fill video signal into a composite of two or more signals. Such signals are...
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