In DOS: You need to set capture resolution to 640x480, or else the screen will be captured in your current settings of 1600:1200 and DOS is only stretched 640x400 from screendoubling. DOS picture is not streched out in VGA mode in any resolution except native 320x240 and 640x480 and above on the Avermedia. DVI capture for DOS does not have this problem (which is why me and Mau1wurf1977 prefer DVI capture whenever possible, though with old 3D accelerators VGA is your only option)

Windows: Be sure to set 60hz in Windows98

In Aver MediaCenter 3D; Settings > Capture > Configure Input Source > Configure Recording > H.264 Edit > setting the video size doesn't seem to do anything for recording in DOS.

As for Windows, The S3 drivers I installed were to blame. Trying to solve that now.

Yea with 640 x 480 and higher, I never had issues capturing 60 Hz signals.

For 320 x 200 games under DOS I run something with 640 x 480 first, hit record, and then the capture works. You will still need to crop and resize the video.

For newer machines go with DVI > HDMI. Works beautifully.

Here some captures:

DVI 1024 x 768 capture: https://www.youtube.com/watch?v=WM2Vf6P2M3s

VGA 3Dfx Voodoo capture: https://www.youtube.com/watch?v=vijnjjTka4c

DVI Wing Commander II: https://www.youtube.com/watch?v=kFlwz7lguVQ

VGA ET4000 on a 386 capture: https://www.youtube.com/watch?v=TJZ3wJ4dGCE

This is not going well. The S3 drivers were not to blame. When I select a resolution above 640x480, that's when the stream gets borked. At 640x480 there's not distortion/flickering/borked screen but it's all red-ish and shifted a bit to the left. Might be the pci slot though.

MediaCenter can't edit that setting required for DOS VGA capture. You need to use RECentral (newest Avermedia software) or VLC.

In VLC:
1. Open Capture Device
2. Then select DirectShow, Avermedia HD Capture and the sound device that has the sound input.
3. Click Advanced Options and check Device Properties, click OK.
4. Click Play
5. Click OK on the first window that pops up.
6. On the next one select 60FPS as framerate and then 640x480 resolution. (select higher if you intend to capture in higher resolutions)
7. Click OK on all the next windows.

NitroX infinity wrote:

This is not going well. The S3 drivers were not to blame. When I select a resolution above 640x480, that's when the stream gets borked. At 640x480 there's not distortion/flickering/borked screen but it's all red-ish and shifted a bit to the left. Might be the pci slot though.

I still think it's a driver issue as my guess is that any DOS game that runs in 640x480 or 800x600 will look fine.

Try another card if everything fails. My personal favorite is a Voodoo3 PCI for VGA capture. It has very good signal quality, it is fast, and it centers the image on all resolutions I've tried. Using a S3 Virge is asking for trouble with the Avermedia (and bad capture quality if you have a lowend card)

I picked the S3 because it's a 2D card. I'm worried that a 2D/3D card might interfere with the results or do the accelerating instead of the 3D card I want to record. Are my worries unfounded?

NitroX infinity wrote:

I picked the S3 because it's a 2D card. I'm worried that a 2D/3D card might interfere with the results or do the accelerating instead of the 3D card I want to record. Are my worries unfounded?

Yes 😀

I normally run 3DBlaster PCI (Rendition Speedy3D, Rredline, CGL, Direct3D), PowerVR (PowerSGL, Direct3D), Voodoo1/2 (Glide, Direct3D) in my bench system and have full control 😀

A Voodoo3 can only accelerate Glide, OpenGL (via miniGL ICD) and Direct3D. With Direct3D you can control that with the 3DCC tool. OpenGL by using the OpenGL drivers/wrappers/ICD in the game settings. For Glide it's a bit more tricky with a Voodoo3 and you want to run on a Voodoo1 card, a suggestion swapping out the Voodoo to a Nvidia card (Riva128, TNT, TNT2, etc) as that only accelerates direct3d and OpenGL.

If you insist on using a pure 2D card, then go for the ET6000 😀

I have shifted image on aver c127, under windows 98se and using something like TNT2 I can shift image manually by PowerStrip, but when Glide activates it still shifted right at 6-8 pixels.

In glide mode I tried to play with SSTV2_BACKPORCH variable, but still nothing ((
https://youtu.be/YdilJR8oZs8

well, I found a solution.
it is two variables for v1 and v2
SST_BACKPORCH
SSTV2_BACKPORCH

and in bat file it will be something like that
SET SSTV2_BACKPORCH=0x1D001D

and tada!

3dfx.bat for Blood 1, Glide, Voodoo2, avermedia c127:
SET SSTV2_BACKPORCH=0x1D001D
SET BUILD_640x480=1
SET BUILD_CONVTEXTURES=1
SET BUILD_GAMMA=1
SET BUILD_RESAMPLE=1
3dfx.exe