Key and Alpha Signals

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Recommended Practice (RP)
Pages: 1–2
Abstract: 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 commonly referred to simply as key signals. This description is given for composite and component analog and digital signals.
Release Tag: 19950101-pub
Publication Date: 1995-01-01
Approval Date: 1995-01-01
Reaffirm Date: 2011-06-30
Superseded Date: 2012-11-01
DOI: 10.5594/SMPTE.RP157.1995
ISBN: 978-1-61482-173-1
Link: https://doi.org/10.5594/SMPTE.RP157.1995
Group: SMPTE 10E Essence
Keyword(s): Communication, Networking and Broadcast Technologies, Image Formats, Interfaces, Television, Key Signal, Alpha
ICS Codes: 33.160 Audio, video and audiovisual engineering
33.160.40 Video systems
33.170 Television and radio broadcasting
Copyright: © 1995 SMPTE

Newer version available! SMPTE RP 157:2012 [Active, Stabilized]

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SMPTE RP 157:1995, Key and Alpha Signals
doi: 10.5594/SMPTE.RP157.1995
url: https://doi.org/10.5594/SMPTE.RP157.1995

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SMPTE RP 157, Key and Alpha Signals
doi: 10.5594/SMPTE.RP157
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Referenced By

SMPTE RP 175:1997 [Withdrawn*]
SMPTE ST 274:2008 [Active, Stabilized]