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When I look at a DVD playing on my Sony ES DVD player through S-Vid on my Toshiba 61"...I see blotching spots moving randomly in the background in some medium lighting conditions on soft colored backgrounds...umm, what exactly is this and why is it there?
Maybe you can still get some analog video Laserdiscs and a good used Pioneer Laserdisc player on ebay or audiogon.drobo
I should also point out that the artifact, banding, I desribed below does not occur, or is so slight it is indistinguishable, when I use interlaced mode. It only occurs in progressive scan. Just another interesting tidbit on this banding type shadow.KM
I have a Toshiba SD-9200 and when feeding composite my Quadscan Elite via component input and then to the Mitsubishi X-100 FP via RGB, I notice those banding. I've noticed the same thing when it was fed through a DVDO Iscan Pro. But when I feed the projector via its composite input (don't have S-video cable long enough), the banding is not there.Are these signals handled differently via component and composite?
nothing more than compression artifacts...... MPEG does the worst where the is a gradual change of color... that's where you will notice the biggest problem with the artifact... i own the same player, it does a pretty good job of correcting it most of the time.... if your TV's contrast and brightness are set to high, you will pronounce the problem.Sam
NT
I looked around, and it IS apparently your 9000 that causes this artifact. Many other brands and models at every price point do the same thing to differing degrees. A few people have mentioned it on the video sites, but have different names for what seems to be the same effect. If I had looked for it with the RP56 I wouldn't have even seen it anyway. Many people do not even notice the effect. Have you ever seen somebody using a computer monitor set for 60Hz refresh, and the screen seems like it's vibrating. Drives me crazy, and when I comment on it, I get "What do you mean?". So some people are just not sensitive to video "anomalies"; even when they're told they're there, they don't see them.
NT
I own a Sony ES9000 DVD player as well. It is connected to a 61" Sony XBR. The artifact that I have seen occurs on most DVD's that I watch as well and I would discribe it as a shadowy type banding that is seen when there are light objects and dark objects on the screen together (like in What Women want when the camera pans from a white wall past some dark brown bookshelfs) or in artificial light conditions (like in Gladiator when Russel Crow is in the tents, near the beginning of the movie, when campfires are used for light). This banding sometimes moves with the object and then disappears. Sometimes it is so slight it is not noticeable. It does not occur in all scenes but is random. Is this the kind of artifact you are referring to? I have yet to figure it out, even had a Technician look at it and he did not know.KM
NT
NT
The next time you see it, could you maybe jot down some DVD timings? So I can look for it, say in WWW and Gladiator, both of which I have. I have a Sony 51" RPTV. I have a cheap Apex DVDP, and a slightly less cheaper RP56 that I know has a pretty good chipset which is fairly glitch-free, so I could try both and that might point to a DVDP or TV issue. i.e. if I see the blotches with both DVDP's then I would say it's the TV, if I don't see them with the RP56 then I'd say it was the DVDP. Thanks.The "blotches" I saw were like small bright green "inkblots" that lasted a few seconds, but did not move. They did not appear at a lighting or texture transition interface. I returned the disc as "defective" (the sound sucked too) so can't check it again.
This could be MPEG macro blocking, and it could be chroma bug.To learn more than you want to know about chroma bug, follow the link below.
Regards,
I have only ever seen this on one DVD here, so I can definitely say it was the DVD and not my system. If you see it on lots/all DVD's, then it's something in your system. Not to say the DVD's are perfect, but that your gear should be able to handle them. If you want to determine which component, probably easiest to mark the times, then take a few DVD's to the place where you got the DVDP. Try it with an ES hooked up to a Sony TV, as I don't get these artifacts (except that one case) on a newish Sony TV, so that would point to your TV if the artifacts disappear. I asked elsewhere about this issue and it was suggested it was caused by some processing in the TV, so you could try fiddling with which processing mode you're using, if you have a choice.FWIW, the one DVD was Ghost World and the random moving blotches were green, very annoying.
It seems worst in The Patriot, about halfway when Mel is talking to Cornwallis in up in his room, look at the back wall. But it occurs on just about every DVD I have. I must say I have a 555ES reciever that the s-video goes through it first then on the the Toshiba. I thought perhaps it was the T.V. but as I made adjustments I lessened it somewhat. But I have a friend with a similar set up, same player and reviever, but he has a Sony XBR T.V. and experiances the same effect. Perhaps it is just DVDs in general, or me, my girlfriend says she can't see anything (yet when can girls see or hear anything for that matter).
Do a little research on the phrase "Digital Artifact" to get an explanation of this effect.
From what you say, it might point to the DVDP as the common element, since the receiver doesn't do video processing. I don't think it's the S-video thing, because I only changed over to component a while ago, and never saw it except that once. The video passes through my receiver too. The kind of blotching I meant was sustained, I can't believe someone couldn't see it.
Sounds like some kind of digital artifacts. I see these also on some DVDs. It may have something to do with the way you have your TV calibrated, or it could just be the nature of your DVDs. DVD can look very good, but certain compression artifacts are nearly unavoidable.
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