"ms" wrote in message
...
ms wrote in :

The used movie dvd looked IMO clean, no scratches, very clean, even
viewed at a angle, could see nothing.

I played it and got, I believe, an unusual problem.

A scene in a lighted room, the lighting is bright as you would expect,
but a moment later, the lighting dims, then brightens again. This
repeated at random intervals during the viewing. The movie was "The
Man in the Grey Flannel Suit", and that was not in the movie.

I replaced it with another movie dvd, it played fine.

I washed the problem dvd in plain water, let it air dry. Now it has
water spots. Haven't tried to play it again.

What is a safe way to clean a movie dvd at home?

And, is a dirty dvd the problem in the above results?

ms

Thanks to all. I should have mentioned, this is a commercial DVD, the
garage seller bought new, the dvd has the expected label side. So IMO
it' original.

I will try distilled water as a wash.

ms

There is no need for distilled water, nor any need to be particularly
careful. Any fingermarked CD or DVD can be cleaned with ordinary washing up
liquid, worked across the disc (not around the disc as has been pointed out
by others) by your two thumbs. When you have been over the whole disc in
thus manner, rinse it off with warm flowing bog-standard tap water. Shake
the excess off, and then dry off the remainder with a dry lint-free cloth.

Minor lower surface scratches are of no consequence whatsoever. The error
correction systems that are employed, are more than adequate to cope with
such minor imperfections.

I would agree with others that have posted answers. The disc in question was
almost certainly mastered from a bad print of the original film. A dirty,
scratched or otherwise damaged disc, will not cause any 'analogue' effects
of the type you are describing.

Arfa