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Path: utzoo!watmath!clyde!akgua!mcnc!decvax!ucbvax!halbert
From: halbert@ucbvax.UUCP (Dan Halbert)
Newsgroups: net.video
Subject: conversion to NTSC
Message-ID: <273@ucbvax.UUCP>
Date: Mon, 16-Apr-84 00:40:25 EST
Article-I.D.: ucbvax.273
Posted: Mon Apr 16 00:40:25 1984
Date-Received: Mon, 16-Apr-84 07:32:17 EST
Organization: U.C. Berkeley
Lines: 11

Re: All this discussion of conversion of television formats:
I have noticed, while watching snippets of European television rebroadcast
on US NTSC television (usually on news interviews), a non-smooth conversion
effect. Every few seconds a frame will appear to be held for an extra long
time, and then the following frame will appear jerky, as if one or more have
been missed. The previous articles discussing PAL to NTSC conversion describe
methods which would not seem to produce this effect. Am I seeing an artifact
of a different (poorer) conversion process? Or is this perhaps an artifact of
the transmission method, with frames being dropped and previous frames held
because of transmission errors or a shared data channel?
--Dan Halbert, ucbvax!halbert