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VGA Capture Thread

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Reply 1180 of 1188, by imi

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VirtuaIceMan wrote on 2022-04-08, 14:10:

One important question: capturing from the Nvidia NV1; when you run a game fullscreen on that, it runs at 640x400 resolution (I believe). When I've viewed that on LCD screens via VGA, the image stretches off the top and bottom of the screen, and can't be shrunk vertically.

Whichever capture route I went for, would it do the same (if capturing via VGA) or would the whole image be visible? A dirty workaround would be to capture the game in a window, then crop out the window, but that's not ideal...

that wholly depends on your capture hardware, every LCD screen can handle some resolutions differently.

Reply 1181 of 1188, by Kordanor

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Yeah, I would second that. LCDs are a bit "special" there, same are capture devices. So there doesnt need to be any similarity between the two outputs.
The speciality of old CRT Monitors is basically that they adapt better to whatever you throw at them. With LCDs and Capture cards you need to check for their individual limits.

Reply 1182 of 1188, by TehGuy

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Running my DOS machine through an OSSC into a E2S does some odd things depending on the game, mostly on the OSSC end. Epic Pinball Pack 1 on Android, for instance, will shift more blue as the screen goes up and the sector flashing in Duke 3D bleeds over into UI elements when it doesn't in the game unless you enable the 2x scale. Now that I've figured out how to muscle OBS into doing what I need, I don't need the OSSC in the equation anymore but still found it odd. Would also try to call 1024x768 as 808p and I'm pretty sure it added extra pixels off to the right of the image.

Going to be using it over the DVI2PCIe I have despite it having a sharper/clearer image (imo) if only because the E2S has 2 inputs which means I can have my DOS/98/XP machines coming in via VGA to one input and the PPC Macs I have running via DVI-D to another and the difference isn't that bad considering how much less I have to hit the E2S into working how I want via OBS. OSSC is gonna make my dreamcast look better on my TV

Win98+DOS: VIA C3 Ezra-T 1.0AGHz / P3 866MHz, 128MB RAM, AWE64 + Orpheus, GeForce 4 MX 460, 128GB SD card
Win XP SP3: C2D E8500, 4GB RAM, X-Fi Titanium, GTX 750
PowerMac G4 QS 800MHz + GeForce4 Ti4200, OS 9
PowerMac G5 DP 1.8Ghz + ATi x800 XT, Leopard

Reply 1183 of 1188, by VirtuaIceMan

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DVI is fine, but the Nvidia NV1 and Matrox M3D only have a VGA port

My PC spec: Win10 64bit, i7-4970K (not overclocked), KFA2 GeForce RTX 2070 SUPER, Creative Soundblaster ZXr, 16GB RAM, Asus Z97-A motherboard, NZXT 410 case, ROG Swift GSYNC monitor

Reply 1184 of 1188, by maxtherabbit

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TehGuy wrote on 2022-05-18, 01:31:

Running my DOS machine through an OSSC into a E2S does some odd things depending on the game, mostly on the OSSC end. Epic Pinball Pack 1 on Android, for instance, will shift more blue as the screen goes up and the sector flashing in Duke 3D bleeds over into UI elements when it doesn't in the game unless you enable the 2x scale. Now that I've figured out how to muscle OBS into doing what I need, I don't need the OSSC in the equation anymore but still found it odd. Would also try to call 1024x768 as 808p and I'm pretty sure it added extra pixels off to the right of the image.

Going to be using it over the DVI2PCIe I have despite it having a sharper/clearer image (imo) if only because the E2S has 2 inputs which means I can have my DOS/98/XP machines coming in via VGA to one input and the PPC Macs I have running via DVI-D to another and the difference isn't that bad considering how much less I have to hit the E2S into working how I want via OBS. OSSC is gonna make my dreamcast look better on my TV

In one of the firmware updates released in the last year or two, marqs added a AGC clamp adjustment setting to correct those colour shifts

Reply 1185 of 1188, by TehGuy

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maxtherabbit wrote on 2022-05-18, 14:35:

In one of the firmware updates released in the last year or two, marqs added a AGC clamp adjustment setting to correct those colour shifts

Well TIL I'm not on the latest; device was shipped to me with 0.81.

Win98+DOS: VIA C3 Ezra-T 1.0AGHz / P3 866MHz, 128MB RAM, AWE64 + Orpheus, GeForce 4 MX 460, 128GB SD card
Win XP SP3: C2D E8500, 4GB RAM, X-Fi Titanium, GTX 750
PowerMac G4 QS 800MHz + GeForce4 Ti4200, OS 9
PowerMac G5 DP 1.8Ghz + ATi x800 XT, Leopard

Reply 1186 of 1188, by Kordanor

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Does anyone have experience with the XCAPTURE-1 ?
it can be ordered here https://solarisjapan.com/collections/micomsof … hd-capture-unit
Seems like this is already around for several years. Has two features standing out:
1. Signals are carried through (VGA in and out)
2. Also offers S-Video recording

I dont know how great the video quality is through. The videos talking about it are already quite a bit old and it would be nice to actually have comparisons.

Reply 1187 of 1188, by Kordanor

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I found two more cards which might or might not have any potential.

Anyone got experience with Epiphan DVI2PCIe?
https://www.epiphan.com/wp-content/uploads/20 … ie-brochure.pdf

And then Cards by "Foresight" e.g. FORESIGHT IMAGING I-RGB 165: https://www.fi-llc.com/boards/Products/PDF/ir … b165_200_lo.pdf
Not sure if that one supports DirectShow though. But if it streams live in its own software which can then be captured via OBS I guess that would be fine as well.

Reply 1188 of 1188, by elianda

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Kordanor wrote on 2022-06-16, 22:25:

I found two more cards which might or might not have any potential.

Anyone got experience with Epiphan DVI2PCIe?
https://www.epiphan.com/wp-content/uploads/20 … ie-brochure.pdf

I wrote an align and VGA bandwidth measurement tool for it in 2016: DVI2PCIe Users - looking for Align Tool Testers

Retronn.de - Vintage Hardware Gallery, Drivers, Guides, Videos. Now with file search
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DVI2PCIe alignment and 2D image quality measurement tool