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video capturing real CGA and TGA?

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First post, by soviet conscript

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I know the easy answer to this would be DOSBox or using a VGA card to capture CGA but does anyone here capture CGA from an actual CGA card or TGA from a Tandy and if so what's your method?

I'd like to have a setup like I do with VGA capture where I use a VGA splitter to play the game laglessly on my CRT and then the other VGA cable goes to my capture device but is the same kind of setup doable in CGA or with a Tandy?

do they make CGA splitters? I've seen a few CGA splitter cables on eBay but they are unpowered. does splitting CGA to two monitors require power like VGA? and once split how does one get the signal to work with a VGA capture device? I saw some pretty cheap CGA to VGA converters and was wondering if they would do the trick or will a simple db9 to db15 cable work? I have both a Avermedia HD capture card as well as a Epiphan DVI2PCIe card so I'm sure one of those cards will work with the signal I'm just curious about the method of getting it there.

Reply 1 of 6, by Scali

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There are two methods:
1) Use the composite output with a standard NTSC composite capture device (a simple USB one will do the job).
2) Use one of those 'arcade' conversion boxes to convert the RGBI signal to analog RGB (VGA), after which you can capture it with most VGA-capable capture devices (or use a scanline converter to convert the VGA signal to NTSC composite, and capture that like you do in 1)).

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Reply 2 of 6, by FaSMaN

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You might be able to use a CGA to VGA adapter like the GBS-8200 , some of the CGA games did a lot with Composite aswell, so its worth trying a normal AV capture card and seeing if the effects translate properly.

Reply 3 of 6, by soviet conscript

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Thanks for the suggestions, 2 questions. I don't see a DB9 input on the gbs-8200 so how do you connect a cga cable or will a simple DB9 to db15 work? Second do CGA cards output CGA and the composite simultaneously?

Reply 4 of 6, by FaSMaN

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soviet conscript wrote:

Thanks for the suggestions, 2 questions. I don't see a DB9 input on the gbs-8200 so how do you connect a cga cable or will a simple DB9 to db15 work? Second do CGA cards output CGA and the composite simultaneously?

Just Connect Red Green Blue and HS and VS to the corresponding pins on the DB-9, most of the Goby convertors come with a harness with the breakouts already available, http://www.angelfire.com/electronic2/rch/conectors.html

As for CGA and Composite , I have no idea, Ive never tried to run them both at the same time.

Reply 5 of 6, by PhilsComputerLab

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Contact Elianda, he's the Epiphan guru and will probably know what to do.

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Reply 6 of 6, by Scali

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You need to have a separate digital-to-analog RGB converter, to convert RGBI to 'analog' RGB (just 2 levels) before you can use a GBS-8002 or similar device.
A GBS-8002 is meant to convert analog RGB SCART signals (PAL or NTSC-compatible) to VGA (despite them often being labeled as 'CGA'... they are meant for arcade/console machines, the 'CGA' labeling is incorrect, a big gripe for us CGA-lovers).
The C128 uses the same RGBI output as CGA, so you can use the RGBI-to-SCART converters that they use, you can find one here for example: https://sites.google.com/site/h2obsession/CBM … 8/rgbi-to-scart

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