How bad does a DVD need to get scratched before it starts to mess up?

[Stone Cold]

Like how many scratches, or what kind of scratches, does a DVD need to get before it starts messing up (like pixelation during the movie and stuff like that)? I was just curious.

And another question: you know those DVD scanner programs for the computer where it will scan every file on a DVD to see if any of them are corrupted? If it successfully verifies a DVD as 100% error free, does that mean that there is nothing wrong with said DVD at all, and it's guaranteed to be in complete working order? Or are there things a DVD scanner program can't catch? Like for example, let's say there was a bad DVD copy of a movie on the assembly line, and as a result some parts of that DVD have some small pixelation errors during the movie. Would a DVD scanner program be able to catch those?

Thanks for your help.

[tomdkat]

Originally Posted by Stone Cold

Like how many scratches, or what kind of scratches, does a DVD need to get before it starts messing up (like pixelation during the movie and stuff like that)? I was just curious.

This depends on your DVD player. Some are less affected by scratches than others.

And another question: you know those DVD scanner programs for the computer where it will scan every file on a DVD to see if any of them are corrupted? If it successfully verifies a DVD as 100% error free, does that mean that there is nothing wrong with said DVD at all, and it's guaranteed to be in complete working order? Or are there things a DVD scanner program can't catch? Like for example, let's say there was a bad DVD copy of a movie on the assembly line, and as a result some parts of that DVD have some small pixelation errors during the movie. Would a DVD scanner program be able to catch those?

I've never heard of such a program but others here might have.

Peace...

[limacharliewhiskey]

Like Tom said, some players ignore scratches, like my current player (a Panasonic) and my previous one (an RCA model). I've played some pretty badly scratched up rental discs perfectly fine.

I've also had glitchy discs go bad, where the protective surface for the data is completely scratch-free.

If you have a glitchy disc, the defect on the disc is sometimes not visible to the human eye.