| Preserving Your Precious Family Videos | |
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It was my sons Bar Mitzvah (Confirmation) and I was thrilled that my
brother-in-law was taking some videos for us. This was in the middle of
the summer and after the ceremony we treated our extended family to a cruise
around the Islands of Maine. What a glorious time and what a wonderful
memory these videos would make. All of my aunts and uncles were getting
on in years and this was a great way to preserve our memories of them.
What I didnt know then is that videos are not a reliable way to document
anything that you want to preserve. In fact, it is one of the worst
methods you can use for preserving images. What I have learned is that
videos will only last 10 to 15 years before they start to deteriorate.
Pretty frightening isnt it? Although I am not an expert on
videography, I have studied the preservation of videos and have learned from
several experts in the field. The results are all the same....The best
you can hope for before videotapes deteriorate is less than twenty years.
Many individuals that own photographs are familiar with photographic
deterioration. Most photographs get either darker or lighter (depending
on the photographic process) when they deteriorate. This does not happen
with videos. Deterioration starts with static lines running across
the image.....kind of like a video that is not tracking properly.
The problem is that you can not correct this problem with your tracking
control. This problem gets worse until it is very difficult to view
anything.
By now you may be wondering what good is that new video camera that you just
asked for as a Christmas gift? Well, as long as you are aware of their
limitations, video cameras are great for short-term viewing. Videotapes
are like movie films but they dont last as long. Therefore, one very
practical use could be to take some videos of the children as they are growing
and send them to the grandparents. If visits are difficult because of
long distances, sending these videos to the grandparents is the next best
thing to being there. Not only can they see the grandchildren, but they
can hear them as well. Videotapes are also very helpful when you
transfer your slides or home made movies to them. This frees you from
taking out the slide projector and screen and setting this all up. It
also frees you from having to dig out the movie projector and threading it up.
Deterioration
Videotape is made from a base of polyester, which is coated with polyurethane. The coating acts as a binder, trapping magnetic oxide particles (the carriers of the magnetically encoded information) within the tape. That binding system is fragile. High temperatures and humidity accelerate the deterioration, causing the urethane particles in the coating to react with water (humidity), break free and migrate to the surface of the tape. The next time the tape is played, the oxide particles, no longer obstructed by their binder, peel off, taking with them all of the recorded images.
Videotape is made from a base of polyester, which is coated with polyurethane. The coating acts as a binder, trapping magnetic oxide particles (the carriers of the magnetically encoded information) within the tape. That binding system is fragile. High temperatures and humidity accelerate the deterioration, causing the urethane particles in the coating to react with water (humidity), break free and migrate to the surface of the tape. The next time the tape is played, the oxide particles, no longer obstructed by their binder, peel off, taking with them all of the recorded images.
Tips for Extending the Life of Your Videotapes
Images © 2000 David Mishkin. All Rights Reserved.

