OSSC (DIY video digitizer & scandoubler)

[Harrumph]

I get those blurry colums without touching default sample rate, or messing around with specific modes. In fact, they're there (once again, in LineX2 only) even if I 'reset all settings' on the OSSC.

Since you are using PC monitor, I think it's more likely your display that scales 480p badly and not a samplerate issue. I would try changing H.Active to 640, essentially getting VGA output (640x480). If needed (aspect might be incorrect), reduce H.Samplerate to 800.

[Galdelico]

Since you are using PC monitor, I think it's more likely your display that scales 480p badly and not a samplerate issue. I would try changing H.Active to 640, essentially getting VGA output (640x480). If needed (aspect might be incorrect), reduce H.Samplerate to 800.

It may be the case, since doing as suggested above didn't solve the issue (I can see the colums moving and getting smaller, but I can't get rid of them entirely). Is there a reason why I can only see them in LineX2, though? Assuming both monitora has mediocre scalers, shouldn't I experience glitches in every output mode? LineX3, 4 and 5 look absolutely immaculate (and that's why I was just curious about it, as I'm perfectly happy with LineX4, for 240p sources).

[Xyga]

480p scaling got even worse with 4K displays than it already was during the HD era.
You shouldn't expect sharp and proper results with anything under 720p.

[awe444]

I can see the colums moving and getting smaller, but I can't get rid of them entirely).

You actually want to make those moving columns grow bigger/wider, not smaller/narrower. At their widest point they'll be exactly the width of the screen, and at that point adjusting the phase properly will make the entire image perfectly clear.

[bonzo.bits]

That's not my experience, after increasing the H.samplerate by enough, the graphics become clear without any other adjustments being required. Also, further increases to H.samplerate brings back the fuzzies.

I just checked my notes, turns out my previous post was incorrect - the adjustment to H.samplerate is required for generic modes NOT optim. This is on a Panasonic VT60, which doesn't do Lx5, but using Harrumph's trick for V.active, it will display Lx3 and Lx4 in a 1280 X 1024 window.

EG, NTSC Saturn. Line x4, generic 4:3 mode.
Default H.samplerate for this mode is 1560. The Saturn requires an increase to 1709 in order to resolve the fuzzies, this also requires an increase to either H.synclen or H.backporch in order to re-centre the image. The fuzzies do not expand and fill the entire image, they decrease in number and in severity gradually, until they are completely removed.

Perhaps what awe444 is describing is a similar affect, but with a different cause. I don't have the tech knowledge to puzzle out cause and affect, but I'd guess that it is to do with how some displays handle the incoming signal from the OSSC and so different displays may require different means in order to resolve the problem.

[RocketBelt]

hello, I'm planning to buy ossc in order tu use it with a LG MP57 Ips Led Pc monitor... Will I be able to run PS2 with scart rgb in sync-on-green mode? And by the way all the 480i interlaced content will display fine?
Best regards.

Yes it works nicely with the PS2's RGsB mode. You need to select RGsB mode on the OSSC when the PS2 switches modes but with a remote this is no bother. The OSSC's bob deinterlacing looks great but there have been a couple of reports that the slight flicker in this mode causes image retention artefacts on ips panels. Both reports were lg ips panels. (one of the reports was from me) But you can use the 480i passthru option on the OSSC which lets your display handle the deinterlacing. Just check in the manual the the monitor accepts 480i.

[Galdelico]

You actually want to make those moving columns grow bigger/wider, not smaller/narrower. At their widest point they'll be exactly the width of the screen, and at that point adjusting the phase properly will make the entire image perfectly clear.

Ha, ok. I get the logic behind that. Thanks!

That's not my experience, after increasing the H.samplerate by enough, the graphics become clear without any other adjustments being required. Also, further increases to H.samplerate brings back the fuzzies.

I just checked my notes, turns out my previous post was incorrect - the adjustment to H.samplerate is required for generic modes NOT optim. This is on a Panasonic VT60, which doesn't do Lx5, but using Harrumph's trick for V.active, it will display Lx3 and Lx4 in a 1280 X 1024 window.

EG, NTSC Saturn. Line x4, generic 4:3 mode.
Default H.samplerate for this mode is 1560. The Saturn requires an increase to 1709 in order to resolve the fuzzies, this also requires an increase to either H.synclen or H.backporch in order to re-centre the image. The fuzzies do not expand and fill the entire image, they decrease in number and in severity gradually, until they are completely removed.

Perhaps what awe444 is describing is a similar affect, but with a different cause. I don't have the tech knowledge to puzzle out cause and affect, but I'd guess that it is to do with how some displays handle the incoming signal from the OSSC and so different displays may require different means in order to resolve the problem.

Thanks again, bonzo.
It really is a case-by-case scenario (I'd say mostly according to the display involved), isn't it? On my 4K LG monitor, for example, LineX4 is perfect. Absolutely cystal clear with no fuzz/blur, I don't need to touch anything in sampling options. It's only a matter of centering the frame (and masking it, with the Mega Drive).

[vinnyguy]

I recently started using an OSSC and have had great success with the consoles I've tried so far( nesrgb, ps2, n64). I've been able to use 3x and 4x. I am curious though because 4x gives me a horiOntally stretched image, like a 16:9 aspect ratio. 2x and 3x give a 4:3 image. Is this how 4x works for you all too?

[Harrumph]

What kind of display do you have?

[headlesshobbs]

hello, I'm planning to buy ossc in order tu use it with a LG MP57 Ips Led Pc monitor... Will I be able to run PS2 with scart rgb in sync-on-green mode? And by the way all the 480i interlaced content will display fine?
Best regards.

Yes it works nicely with the PS2's RGsB mode. You need to select RGsB mode on the OSSC when the PS2 switches modes but with a remote this is no bother. The OSSC's bob deinterlacing looks great but there have been a couple of reports that the slight flicker in this mode causes image retention artefacts on ips panels. Both reports were lg ips panels. (one of the reports was from me) But you can use the 480i passthru option on the OSSC which lets your display handle the deinterlacing. Just check in the manual the the monitor accepts 480i.

I can report that there is some slight artifacting on my panel as well, but I don't typically sit close enough to pick up on it. I usually run my setup in PC mode to keep it minimal. One thing I will point out is when I do passthru via HDMI, it appears that the pixels are very sharpened out as if I'm running x2 resolution and not even adjusting the settings will soften this properly, so I'd have to go back to the OSSC's interlacing to make it tolerable. If I wanted 480i to look perfect at all, I'd have to hook my component directly to the back of the display and that puts me back into all of the forced processing which I've been trying to avoid.

I have tried the bob deinterlace on a normal crt monitor and it looks exacty like the way an arcade monitor would display it.

[vinnyguy]

What kind of display do you have?

I am using an apex digital flatscreen and also used a samsung flatscreen. Both show the same horizontally stretched line 4x image. Same result for nes, ps1/2, and n64. I have line 4x set to generic 4:3.

[bonzo.bits]

I recently started using an OSSC and have had great success with the consoles I've tried so far( nesrgb, ps2, n64). I've been able to use 3x and 4x. I am curious though because 4x gives me a horiOntally stretched image, like a 16:9 aspect ratio. 2x and 3x give a 4:3 image. Is this how 4x works for you all too?

Yep. I have to put the TV in 4:3 mode for 4x. For 2x/3x it stays in 16:9.

[NJRoadfan]

What resolution does the TV think its receiving? I've had oddball VGA resolutions detected as widescreen modes by a few monitors here.

[Jademalo]

Finally managed to get my OSSC order in, yay!

Looking at either a DVDO Edge or a DVDO iScan VP50pro to compliment it, and there's a good chance I can get an insane deal on a VP50pro.
Is one worth getting over the other to compliment the OSSC, or is it just a case of whichever you can grab for a better price?

Also probably a dumb question, but I'm running out of HDMI inputs - Is the XRGB Mini's HDMI in a straight passthrough, or does it get pushed through the framebuffer and add latency? Would it even work with the nonstandard modes?

Thanks!

[Xyga]

I think it's important to tell people it isn't absolutely necessary nor always ideal to chain a DVDO with the OSSC.

Buy one if you have no other mode working beyond linedouble, it might unlock linetriple for your display, but nothing more (afaik line x4 & x5 don't get through DVDOs, correct me if wrong)

The old iScan VP** series will add about 6~7ms of lag to the chain (as small a time as it is it can move the total lag chain, with an otherwise sub-1 frame dispaly flat panel, past the 1 frame bar) and are not compatible with linetripled PAL sources (the EDGE is but compared to the VP** it's often got significantly more lag with various sources whether they're 50 or 60Hz)

The VP50 Pro sure adds the fancy picture sharpening/smoothing feature, and provides its own good full deinterlacing engine (the latter being nice for the PS2 RPG library... that is only if you don't have a TV that already does a good job without the DVDO...)
First check if you can use your display's own picture adjustments efficiently, some TVs do a great job tweaking sharpness and contrast.

[Guspaz]

DVDO devices add lag (half a frame at least, IIRC) and are expensive: you should not be using them unless you need them. I doubt most people need them.

[Lord of Pirates]

Agreed. I do think they're very much worth looking into if you're interested in using one for their original purpose of film/TV processing.

[fafangus]

I finally manage to get synchro (audio + video) in my vidcaps ^^
So here is a little cap of a SFC 1 chip + OSSC + CII :
http://www.youtube.com/watch?v=KieY1_uVsnI
Line X4 - for my setup Line X5 isn't good for gameplay - at least for SFC -
Sorry for the french

[Jademalo]

Alright, thanks for the detail!
When I say good deal, I'm talking €50 good deal, it's almost not worth NOT picking it up at that price =p

What about plugging it through the Mini for convenience sake? Is it fine to do that, or am I going to add lag/degrade the picture/ruin everything by doing that?

[ZellSF]

Buy one if you have no other mode working beyond linedouble, it might unlock linetriple for your display, but nothing more (afaik line x4 & x5 don't get through DVDOs, correct me if wrong)

5x@1080p works on DVDOs.
5x@1200p doesn't though, so you'll have the 10% forced overscan of 5x1080p.

[orange808]

I think it's important to tell people it isn't absolutely necessary nor always ideal to chain a DVDO with the OSSC.

Buy one if you have no other mode working beyond linedouble, it might unlock linetriple for your display, but nothing more (afaik line x4 & x5 don't get through DVDOs, correct me if wrong)

The old iScan VP** series will add about 6~7ms of lag to the chain (as small a time as it is it can move the total lag chain, with an otherwise sub-1 frame dispaly flat panel, past the 1 frame bar) and are not compatible with linetripled PAL sources (the EDGE is but compared to the VP** it's often got significantly more lag with various sources whether they're 50 or 60Hz)

The VP50 Pro sure adds the fancy picture sharpening/smoothing feature, and provides its own good full deinterlacing engine (the latter being nice for the PS2 RPG library... that is only if you don't have a TV that already does a good job without the DVDO...)
First check if you can use your display's own picture adjustments efficiently, some TVs do a great job tweaking sharpness and contrast.

+1

Xyga is right. Try the OSSC by itself first.

FYI: My vp50 and vp50pro both handle OSSC 5x output. The vp50pro has the best image quality and lowest lag of any full featured video processor in our price range. The vp50 looks pretty good, too. I don't own any other DVDO machines, but getting access to the OSSC's 1080p 5x output is very nice.

In the states, a good vp50pro is probably going to cost over $500 usd right now, so it's not cheap. The vp50 is a little cheaper. Be careful, because sellers always list vp50 units as vp50pro units. If you don't see "vp50pro" and a THX logo on the front, it's NOT a vp50pro. Maybe prices will go back down later this year...

The vp50pro and vp50 also have decent and fast deinterlacing for 480i. It's better than XRGB or OSSC bob deinterlacing.

[Xyga]

Ah so x5 works, nice, thanks guys. I still have all my stuff in storage so I'm lagging behind trying/testing hard.

@Jademalo: well yes at 50€ it would be criminal not to buy it lol.

[vinnyguy]

I recently started using an OSSC and have had great success with the consoles I've tried so far( nesrgb, ps2, n64). I've been able to use 3x and 4x. I am curious though because 4x gives me a horiOntally stretched image, like a 16:9 aspect ratio. 2x and 3x give a 4:3 image. Is this how 4x works for you all too?

Yep. I have to put the TV in 4:3 mode for 4x. For 2x/3x it stays in 16:9.

I have switched my tv to display in 4:3. This allows me to have the line 2x and 3x displayed in 4:3. 4x continues to display as a 16:9 image despite changing the tv to 4:3.
I have to say I am very pleased to be able to use line 3x and 4x 'out of the box' on my television. I have yet to get 5x mode to work on either of my tv's.

[RocketBelt]

Alright, thanks for the detail!
When I say good deal, I'm talking €50 good deal, it's almost not worth NOT picking it up at that price =p

What about plugging it through the Mini for convenience sake? Is it fine to do that, or am I going to add lag/degrade the picture/ruin everything by doing that?

For 50 euros pick it up. That price is low.
It is a very nice box of tricks and if you later decide you don't need it, it will sell for more.

[CobraKing]

Alright, thanks for the detail!
When I say good deal, I'm talking €50 good deal, it's almost not worth NOT picking it up at that price =p

What about plugging it through the Mini for convenience sake? Is it fine to do that, or am I going to add lag/degrade the picture/ruin everything by doing that?

I think you need to read a bit more on how the OSSC functions. Chaining it to the XRGB Mini is completely counter intuitive.

[citrus3000psi]

Alright, thanks for the detail!
When I say good deal, I'm talking €50 good deal, it's almost not worth NOT picking it up at that price =p

What about plugging it through the Mini for convenience sake? Is it fine to do that, or am I going to add lag/degrade the picture/ruin everything by doing that?

I think you need to read a bit more on how the OSSC functions. Chaining it to the XRGB Mini is completely counter intuitive.

I kinda assumed he meant the iscan mini to push 4k.

[CobraKing]

Alright, thanks for the detail!
When I say good deal, I'm talking €50 good deal, it's almost not worth NOT picking it up at that price =p

What about plugging it through the Mini for convenience sake? Is it fine to do that, or am I going to add lag/degrade the picture/ruin everything by doing that?

I think you need to read a bit more on how the OSSC functions. Chaining it to the XRGB Mini is completely counter intuitive.

I kinda assumed he meant the iscan mini to push 4k.

I could be wrong but in an earlier post he asks about using the HDMI port on his XRGB Mini....

[Jademalo]

I could be wrong but in an earlier post he asks about using the HDMI port on his XRGB Mini....

I'm well aware of how it works, but I do indeed mean the XRGB Mini.

My retro setup is a small way away from my digital setup, and I've got a cable running over from the Mini. I don't have any spare HDMI ports either. For convenience sake, being able to plug the OSSC into the Mini would let me continue using just the one cable, just setting the Mini to HDMI1 when I want to use the OSSC.
I'm not sure if the Mini will play ball though, or if it will add any extra latency when passing through an HDMI signal, hence why I want to check.

[CobraKing]

If the XGRB Mini has to do any kind of processing it will add some lag.

[Jademalo]

I know, that's why I'm asking if it does, lol.