However, when watching DVD's I often get a fast vertical jitter on the
screen, probably about 8 to 12 jitters per second. The picture jumps up and
down perhaps 1/2 to 1 inc

I know that  is one of the symptoms of Macrovision encoding on elderly equipment.

Elektor make a speciality in producing projects that help to get over that bump.

I believe Silicon Chip did a version as well.

Colin
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cdb, bodgy1@optusnet.com.au on 18/01/2003

I have always been a few Dendrites short of an Axon and believe me it shows.

Light travels faster than sound. That's why some people appear bright until they speak!

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