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[Drachenherz]

Durhm, I wonder whether there exists a device that takes rgb input via scart and outputs this input also via rgb scart, only with added picture adjustment options (i.e. adjusting width/height and position) withou any added lag...

shmups.forum hivemind, help me out!

And if I couldn't express correctly what I'm actually looking for, please forgive my slightly inebriated state of being.



tl;tr:
well, fuck it.

[undamned]

Not likely for sizing, but for position you can definitely dork with the sync signal without adding lag. Not sure if there are off-the-shelf products that do this, but the electronics are fairly simple.
-ud

[Fudoh]

height is impossible. As this would involve scaling and change the line offset/mapping. Can't be done with 15khz signals without being very destructive.

Width and position is possible, although I don't know any device which would change the width on 15khz signals. Positioning is available on a buch of RGB interfaces. http://www.extron.de/product/product.as ... type=1&s=4

[NWrain]

Would a CRT monitor/TV like a Sony BVM that has RGB pass through work?

Derp. I just realized that a pass through wouldn't keep any picture changes.

[rCadeGaming]

Keep in mind that the Extron RGB interfaces add a frame of lag. Horizontal position can be adjust somewhat with a pot on the sync line.

[Fudoh]

Keep in mind that the Extron RGB interfaces add a frame of lag

they are INTERFACES. No buffering, nothing. Why would they add lag ?

[rCadeGaming]

From our PM conversation a while back:

The really interesting thing is the results of my lag testing. I recorded the TV with a camera in 240 fps. I got the TV screen and a closeup of an arcade stick in the same shot. I recorded pushing the light punch button in Third Strike, and counted the number of frames between the button being depressed and Ken beginning his punch animation. That number of frames in the video, divided by four, equals the number of frames taken in the game (240 / 4 = 60). I can confirm that the camera is running at 240 fps and the game is running at 60 fps because I can see the TV's vertical scanning in the video, and I can see it completes a frame every four frames, if you know what I mean. The results were consistent with repeated trials.

PS3 (480i) -> TC1600 -> TV = 3 frames until punch animation starts, defined here as 0 frames of lag

PS3 (480p) -> Super Emotia -> TC1600 -> TV = 3 frames to punch, 0 frames lag

PS3 (480p) -> RGB 202xi w/ADSP -> Super Emotia -> TC1600 -> TV = 4 frames to punch, 1 frame lag

PS3 (480i) -> Andora -> Super Emotia -> TC1600 -> TV = 4 frames to punch, 1 frame lag

PS3 (480i) -> Andora -> RGB 202xi w/ADSP -> TC1600 -> TV = 5 frames to punch, 2 frames lag

As you can see, it seems that the Super Emotia does not add any lag, but the Andora and RGB 202xi actually add a frame of lag each.

...

I realized that since all my testing was done with an RGB 202xi w/ADSP, and considered that the lag could be due to the "advanced digital sync processing," so I switched to the plain RGB 202xi, but I got the same results:

PS3 (480p) -> RGB 202xi -> Super Emotia -> TC1600 -> TV = 4 frames to punch, 1 frame lag

I think I've seen the Extron RGB interfaces have trouble syncing to 15kHz interlaced or progressive signals as well, can't remember exactly on that one.

[Fudoh]

I remember, right. I have so many of these interfaces on hand, I will give them a test run using leo's lag tester.

EDIT with the 203 (that's 3-input model which I have always in my setup, because my TV otherwise won't accept most RGBHV sources) I get a delay or about +1 to +2 ms with a 1080p RGBHV signal. Did just a straight test with Leo's tester + HDFury3. That's basically just a line delay without a full frame buffer. I'll test this with some other interfaces and different resolutions as well.