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Location: UFOUpDatesList.Com > 1997 > Nov > Nov 5

Re: Elders Remarks on Mexico City Footage

From: fergus@ukraine.corp.mot.com [George Fergus]
Date: Wed, 5 Nov 1997 11:38:56 -0600 (CST)
Fwd Date: Wed, 05 Nov 1997 17:33:19 -0500
Subject: Re: Elders Remarks on Mexico City Footage

> Date: Tue, 4 Nov 97 13:10:55 UT
> From: "Diana Hopkins" <DDBH@classic.msn.com>
> To: "UFO UpDates - Toronto" <updates@globalserve.net>
> Subject: RE: UFO UpDate: Re: Elders Remarks on Mexico City Footage

Diana Botsford writes:

> >>  Anyone who has attempted to film a
> >>  monitor or television knows that the scan lines of the camcorder
> >>  and the monitor do not sync.

> As anyone who has worked in Hollywood will tell you, this is
> untrue.  There are tons of tv playback done on television shows
> without seeing any lines.  There is a simple device that syncs
> the tape to film or vice versa.  The tape needs to be transferred
> at a certain speed in order to avoid the lines.

It seems a minor point, but the original poster was talking about
two different video defects.  One, a horizontal black bar moving
through the picture, is caused by the slight different in frame
rate between the video camera and the TV monitor.  As Diana says,
this defect is easily eliminated with the professional equipment
in a TV studio, although such equipment is expensive and seldom
found outside a video production facility.  A computer game
company, for example, would have no need for it.

The other defect is the interference pattern caused by the
difference in scan lines.  A TV picture is not continuous, but is
made up of hundreds of individual horizontal lines.  The
difference in spacing and orientation of these lines when you are
trying to fill the frame of a video camera with the picture from
a TV monitor make it virtually impossible to line these up
exactly, and you get a fairly obvious wavy colored interference
pattern.

Since such an interference pattern is not present in the Mexico
City video, it could not have been recorded off a TV screen as
suggested by Elders.

-George Fergus


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