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All Forums > Tech Talk > Tech Talk Forum Page 64 > Bad "reception" from DVD player?
AuthorPost
SueR
Member

Under a hill of books
262 Posts
12/02
Posted - May 12 2003 : 5:30AM
Sorry for 2 DVD questions at the same time, but I just got a new player and it's fuckin up.

So, on some DVD's (not pornos, only Hollywood ones, for some reason), the picture bounces and "blues out", kind of like when I receive bad antenna reception, or as if the horizontal hold needs adjusting. Someone at Best Buy told me that happens when you hook it through a VCR, but my player is directly connected to the TV. I also notice on DVD's that do this that the Brightness seems to change on its own.


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Sir Noel Plum
Senior Studmuffin

1001 Posts
2/03
Posted - May 12 2003 : 10:04AM
If the brightness is changing on its own it sounds like a macrovision problem (I think most porn dvds don't use macrovision).
Macrovision is there to stop you taping the dvd which is why the employee mentioned VCRs. The macrovision tricks the vcr into varying the brightness by broadcasting very bright then very dark images into non-visible portions of the picture. VCRs have an automatic gain control and this adjusts the brightness compensating for these changes.
Most televisions do not employ an AGC and so are not affected by the macrovision but the odd set is and this is why your brightness is pulsing.

How is your dvd connected to the tv (what kind of lead)? Possibly changing the connection method (RGBscart/ S / rf) might sort out the problem but try hooking the DVD player to a different tv first and see what happens.

Let me know the make and model and I'll have a look to see if your DVD has a code/hack that will disable the macrovision.

Lastly, I don't know what's causing ther blue screen but maybe when you solve the macrovision issue the other issue will disappear.

Take care,
SNP.

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Saki
At-Large

2087 Posts
11/99
Posted - May 12 2003 : 10:41AM
Sounds exactly like a Macrovision problem. You wouldn't be using a TV with a built-in VCR, would you?

If it is Macrovision, you should see the same symptoms when playing a Wicked DVD since they use Macrovision.

- Saki [faqs]

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Bill All-Star Supporter
All-Star Member

5334 Posts
6/00
Posted - May 12 2003 : 8:20PM
Is this a new DVD player hooked to a TV that has not previously had a DVD player connected to it or have you replaced an existing DVD player connected to that TV?

I'm going to assume the former. I agree with SNP & Saki that it sounds like a Macrovision problem. Some TV's (especially older ones) have a circuit in them that is similar to the one found in VCR's. This circuit looks at a single line in the picture (one that's actually below the bottom of your screen and automatically adjusts the brightness of the picture to account for variations in the incoming picture. What Macrovision does is to insert a very bright line in that area every few seconds to make the VCR think that the picture is really overly bright. The VCR (and in this case, your TV) adjusts the brightness of the rest of the picture to account for what it perceives as an overly bright picture. That's what makes the rest of the picture turn dark.

This is the one valid (legal) reason for using one of the "black boxes" used to defeat Macrovision. This is actually the stated purpose of these boxes and the reason that they are not illegal to sell (or buy).

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aybesea
Senior Member

Caroline Cage - Hungarian Hottie!
1485 Posts
5/02
Posted - May 13 2003 : 12:56PM
That's what this gizmo can help with.
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Bill All-Star Supporter
All-Star Member

5334 Posts
6/00
Posted - May 13 2003 : 8:27PM
I would actually go with something like the Sima Copymaster. It's made by a reputable company (that makes other quality video accessories) and it plugs in (most use a 9volt battery).

Please not that neither the box the aybesea nor I have mentioned here are good for copying DVD's. There is a second level of Macrovision on many DVD's that these products dont defeat. However, this level of Macrovision doesn't affect the viewing of the DVD, it just affects the picture of the copy.

If either of these boxes removed both levels of Macrovision, this conversation wouldn't be taking place at ADT.

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SueR
Member

Under a hill of books
262 Posts
12/02
Posted - May 14 2003 : 11:00PM
Yes, it's a TV/VCR. Symphonic 1992. The DVD is an Apex AD-1110W. I've had other DVD players that did not have this problem

Edited by - SueR on 5/14/2003 11:01:14 PM

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