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Old 8th May 2005, 17:55   #1  |  Link
MSlv
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Philips 632 and PAL (interlaced) DVDs

I have a Philips DVP632 and I just found out that if I set the output to NTSC, my PAL-Region 2 discs play progressive, not interlaced anymore... This is strange! I use a RGB-scart connection for video+audio to link it with my PAL 113cm rear projection TV. Untill now, I've used the player in Multi mode (NTSC discs play as NTSC and PAL play as PAL), and on a TV this big the interlace artifacts are visible and many times annoying. I was playing with the component+progressive scan settings using a standard 3xRCA cable and I noticed that PAL source outputted as NTSC has no interlace artifacts. Later, I removed the RCA and only used the scart, but this works with scart too! Just output everything PAL-interlaced as NTSC and it plays progressive.

Has anyone experienced this?

One more thing: Does DVP632 have both PAL & NTSC progressive scan, or just NTSC? I want to make sure if it's either the player or my TV, couse when using PAL+progressive scan (standard 3xRCA cable, not component cable) there is no more signal from DVD, the screen stays blank, but when I press the menu button the image is back.
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Last edited by MSlv; 8th May 2005 at 22:23.
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Old 8th May 2005, 18:37   #2  |  Link
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Well this is odd....

As far as I know, it is not possible to send progressive video signals via RGB scart (the same goes for composite or s-video)... It's an interlaced only connection that was designed to pass audio and video signals between equipment... long before progressive video devices were imagined

Given the quality of your scart lead, you will be able to see differences in image quality between an RGB scart connection and an Y, Pr, Pb component connection... Scart leads are far more prone to cross signal interference, than any other method of connection... And this is most probably why you are seeing, what you are seeing!


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Old 9th May 2005, 13:48   #3  |  Link
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wha? I didn't quite got that. I know Progressive Scan is only possible with component (Y,Pb,Pr). Let me explain all that again, in simpler words (easyer for me to explain that way )

When playing DVDs (R2-PAL) with my DVP632 on my 113cm LG rear projection TV (using a 3$ 75cm RGB-scart cable), the interlacing artefacts are pretty annoying. When playing the same DVD but using NTSC output from player, the interlacing artefacts are no longer visible.

Quote:
Scart leads are far more prone to cross signal interference, than any other method of connection
On a black picture, I can see some of those signal interferences (a very faint picture keeps moving right->left or left->right, but it's almost unnoticeable), but this is because of scart limitations or my 3$ cable?
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Old 9th May 2005, 14:43   #4  |  Link
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Okay... this is very odd.

Are you 100% positive that your "interlaced" PAL output signal is RGB and has not flicked over to composite?

Does this only happen when using the RGB scart connection. Or can you see the same via the component connection?

If your rear projection TV is receiving an "interlaced" signal it should be saying 15KHz/50Hz. If it's receiving an "progressive" signal it should be saying 31KHz/50Hz... that is, if your TV can display such information.

I too am able to force NTSC output of PAL content (and vice versa) using my Sigma Xcard however I'm unable to see any difference with the level of artefacts produced. Plus the video displayed is hardly very smooth looking!


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Old 9th May 2005, 15:39   #5  |  Link
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I'm too lazy to check it for S-video and composite... Another day. But I suspect it's the same for any type of connection.

what do you mean by
Quote:
Are you 100% positive that your "interlaced" PAL output signal is RGB and has not flicked over to composite?
Do you mean If I can change between RGB & composite? If that's it, no, it's just a cheap generic scart-scart cable, with 21 wires soldered inside.
And no, my TV doesn't show that kind of information.
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Old 9th May 2005, 16:32   #6  |  Link
SeeMoreDigital
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Quote:
Originally posted by MSlv
I'm too lazy to check it for S-video and composite... Another day. But I suspect it's the same for any type of connection.
An fully wired RGB-scart (RGB(Y)) connection carries full, red green and blue video signals, however it also uses the scarts composite video signal to provide syncronisation for the RGB video feed.

What might be happening is, when you flick between NTSC and PAL, the PAL video signal "drops" down to composite video instead of outputting RGB(Y)... but I'm just guessing!


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Old 10th May 2005, 08:14   #7  |  Link
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Yes, that may be right. But I'm starting to think it's got nothing to do with the player. It could be the TV. Is it possible that the TV converts all NTSC signals to 480p itself?
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