[Jademalo]

There are, there are two. One next to the H bank and one next to the V bank. They’re all set to 510ohm.

As you say though, we’re only using the first 3 connectors. Plus the input seems to not be the problem here, since outputs 4 and 5 are both clean.

It’s very strange.

[Jademalo]

After a bit more testing, it seems that either of the OSSCs plugged into output 1 work fine, but plugged into output 4 results in the noise. We’ve worked around it by moving from output 4 to output 5, but… that doesn’t exactly answer the question as to why there’s so much noise on output 4.

It’s a 1616 so it’s hardly the end of the world since we’ve got plenty of outputs, but ideally I’d like to figure out what’s causing it.

[Jademalo]

Jesus, that’s pretty insane.

Is there really no simple way to just passive split an N64 into two OSSCs?

[Jademalo]

Sorry I phrased that a bit unclearly. From what I can tell –

With backporch 15, there’s normally one black line on top and two black lines on the bottom. Sometimes the image can be moved up one, and sometimes moved up two. When it moves up two, there are four black lines on the bottom and the top line gets chopped off.

With backporch 13, there’s normally three black lines on top and no black lines on the bottom. Sometimes it moves up one, and sometimes moves up two. When it moves up two, it shows the full resolution and there’s one line top and two lines bottom.

It’s the offset needed that seems inconsistent, it’s very weird.

[Jademalo]

Errm, it’s an older THS7314 amp one I think. I was planning on getting it swapped out for one of the THS7316 ones eventually.

I believe it uses Csync too rather than composite video sync.

[Jademalo]

Inconsistently with everything I’ve tried.

I’ve had it happen with the 240p test suite a couple of times, but not always. I’ve had it happen with Vigilante 8: 2nd Offense more reliably, but it’s still extremely weird.

As an example, try this;
Load up Ocarina of Time, and crop the top and bottom exactly. There should be one line off the top and two lines off the bottom.
Load up Vigilante 8: 2nd Offense
Go into a basic match, and pause
Change between High resolution and low resolution graphics

Low resolution will sometimes have 3 black lines at the bottom, and sometimes have 4. It will also be right up against the top, without any extra room which shouldn’t be possible with the N64 hardware.

For whatever reason, it’s randomly being moved up or down in absolute space, it’s definitely not just a game cropping differently.

[Jademalo]

Damn, that’s a bit more complicated than I’m personally able I think. Thanks for the insight.

I’d be in the camp of both coaxial S/PDIF and TOSLINK together if it was added in a revision, mainly due to audio capture. Since I use a Vision E1S to capture from the OSSC, I’ve got to use some other method of capturing audio. TOSLINK capture is *extremely* rare, and I’ve only ever found one piece of hardware that can do it (ESI U24XL). Conversely, coaxial S/PDIF input is fairly common.

[Jademalo]

Hmm, that doesn’t bode well then, thanks.
I did a bit more testing as well as getting some data from a friend, and it seems like the Xbox’s 480i output is absolute hot garbage.

We both had different variants of official cables, and both of us had terrible images. Not to mention those cables resulted in great 480p output.

Welp, nothing I can do if it is indeed the Xbox. 😐

[Jademalo]

Thanks, I’ll give that a look. That may shed a bit of light on it.
I did check with a null filter in GraphEdit, and in the device properties of the magewell card it seemed to be showing everything correctly.

[Jademalo]

Thanks marqs, I’ll give that a shot when we get the chance.
Two weird things of note – Firstly, the standard test pattern the OSSC has seems to work absolutely fine. Second, the N64 doesn’t. I was under the assumption that the N64 runs at NTSC spec speed, so if that’s not working then it’s extremely weird.

[Jademalo]

Not that I’m aware, but I’ve just found out that the extremely weird thing is this same issue happens with the N64. My original thought was it was something to do with that, but since the N64 has the same issue I’m beginning to think it’s something else.

Plus, I’ve definitely seen a couple of people say that their OSSC works fine with the Pro Capture HDMI, so it *should* be fine.

EDIT: SNES is an unmodded 1Chip

[Jademalo]

Haha, I didn’t notice that thread. I should be a bit more attentive =p

[Jademalo]

Having a really weird issue with the VP50Pro’s colour with the OSSC.
For whatever reason, when everything is set to 0, the image is extremely dark when compared to the vanilla OSSC output. I have to change the brightness to +80 and the contrast to -15 to get anywhere close.

https://www.dropbox.com/s/3b52ujgixzsa44d/Direct.png?dl=0
https://www.dropbox.com/s/vwelu14lcgc5lar/VP50pro.png?dl=0

First is direct from the OSSC, Second is through the VP50Pro.
It’s not a full/limited HDMI issue, since the black is black on both and everything is set to limited. I’ve triple checked all of that.

Any ideas? It’s really substantially crushed, and I’ve got absolutely no idea why this would be. In addition, if this is known, does anyone have any settings I should set my VP50Pro to to properly pass the colour through?

Thanks!

[Jademalo]

I’m assuming they want a square pixels output resolution of 960×480 / 1920×920 instead of the usual 720×480 / 1440×920 to compensate for anamorphic 16:9.

(I think my maths is right, including Hblanks. Used resolution would be ~853.3×480, which is 16:9)

[Jademalo]

I’m well aware of it not being applicable for every game, Heck even in the OP I mentioned that the Triforce at the start of ALttP is corrected while the rest of the game isn’t. I’m also well aware of it being technically wrong, and obviously not what you would see on a CRT back in the day.

My main rationale for requesting this was for the option. Of course having the square pixels isn’t the true output, but for pixel art especially it’s nice to A- be able to capture an extremely crisp hard edged image, and B- set those games that didn’t have the correction in mind to get those perfect circles.

It’s not about being right or wrong, it’s about being able to choose which is preferable for you. I mean you could argue for Yoshi’s island that square pixel correction is actually what they intended since the GBA version preserves circles in the same manner, but that’s besides the point.

Options are good! If it’s something you don’t like then there’s no need to ever use it, and that’s great too.

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