A Film to Video Converter

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE J
Volume: 108, No. 3, pp. 165–167
Abstract: The transfer of film images to video is complicated by differences in film and video frame rates. In 50-Hz countries, 24 frame/sec film is run at 25 frames/sec making the transfer simple. In 60-Hz countries, the problem is more complicated requiring some means to implement a 3–2 pulldown sequence; that is, one frame of film is transferred to three consecutive video fields and the next film frame is transferred to two video fields. The 3–2 sequence has been accomplished mechanically, optically, and electronically using frame stores. This paper describes another approach which utilizes a normal projector and video camera with a light valve as an electronic shutter to meter the same amount of light from the film to each video field.
Publication Date: 1999-03-01
DOI: 10.5594/J17095
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J17095
Author(s): William MasseyRetired electrical engineer who resides in Mount Holly, NJ 08060. Copyright © 1999 by SMPTE
bio
William Masscy's career included evaluating and designing radar and missile guidance systems for several companies. He managed an analog design support group for a computer manufacturer and designed industrial controls and protective relays (fault detectors for electrical power transmission). He retired in 1993, except for some work as a contract engineer and writer. Massey obtained a Bachelors degree in electrical engineering at the University of Florida in 1958. He holds patents in several fields.
Copyright: © 1999 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Benson K. B. , “Television Engineering Handbook,” McGraw-Hill : New York , 1986 . EXTERNAL

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<span class="citation">William Massey; <cite>A Film to Video Converter</cite>, SMPTE Journal ( Volume: 108, Issue: 3, March 1999); SMPTE, 1999. Available at <a href="https://doi.org/10.5594/J17095" target="_blank" rel="noopener">https://doi.org/10.5594/J17095</a></span>

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William Massey; A Film to Video Converter, SMPTE Journal ( Volume: 108, Issue: 3, March 1999); SMPTE, 1999
doi: 10.5594/J17095
url: https://doi.org/10.5594/J17095

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<span class="doi">10.5594/J17095</span>
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