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Golara
Account closed
Registered: Jan 2018
Posts: 212 |
C64 on LCD with svideo
Did anyone try using LCD monitor or TV with svideo input ? I'm not talking about using external converters to VGA or HDMI. Do they really handle 50Hz analog signal or they do some VGA conversion inside, how is the quality ?
Example of such monitor
I've got a really good Sony TV with Svideo, but it's a bit too big for my liking (26") It's so hard to find 21" or thereabout TV with Svideo :( Also, are there any CRT monitors with additional Svideo besides the standard VGA ? I think that would be perfect. |
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Dano
Registered: Jul 2004
Posts: 231 |
i would say, get a retrotink 2x and with the resulting hdmi you should have way more monitors to choose from. |
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Golara
Account closed
Registered: Jan 2018
Posts: 212 |
How do they handle the framerate, isn't hdmi and monitors 60 Hz ? Besides I'm talking about very cheap option. Old LCD monitors with Svideo can be had for pennies. |
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Oswald
Registered: Apr 2002
Posts: 5086 |
maybe you will like this: https://www.youtube.com/watch?v=RAi8AVj9GV8 |
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Golara
Account closed
Registered: Jan 2018
Posts: 212 |
Quote: maybe you will like this: https://www.youtube.com/watch?v=RAi8AVj9GV8
Well, I don't need convincing to use CRT as I do have CRT TV with Svideo which produces very good image, It's just that it's a bit too big for the furniture I've got in my room. It's there for couple of months, but a bit smaller TV would make my life a bit easier. It's just so hard to find a small TV with Svideo and I don't want to use composite. PVMs are expensive as fuck, I'm stingy as fuck. Getting old CRT televisor is very cheap and often even free, you just have to go and collect it. I'm looking for ads and auctions for smaller CRT with svideo almost every day but with no luck. I thought of these LCDs as a possible secondary display just in case (but I still want good qood quality) |
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Oswald
Registered: Apr 2002
Posts: 5086 |
what I find exciting in that vid is the high end CRTs (up to HD reso) it showcases that I didnt know about. from about 60% of the playtime. since you are after space opimization then sorry for the oftopic :) |
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Golara
Account closed
Registered: Jan 2018
Posts: 212 |
Quote: what I find exciting in that vid is the high end CRTs (up to HD reso) it showcases that I didnt know about. from about 60% of the playtime. since you are after space opimization then sorry for the oftopic :)
I didn't know these BVMs could display 720 and 1080 either. It was a cool video.
I'm wondering if it's possible to convert Svideo signal to rgb. You'd think that with modern fast, small and cheap electronics it should be possible to read one signal on analog IO, read whole frame to a framebuffer and output it in another analog format over IO. Such thing with one frame delay max would be acceptable. No such device exists and I don't want to call people stupid, so there must be some reason it doesn't exist, I just don't know what it is. |
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Oswald
Registered: Apr 2002
Posts: 5086 |
because its mostly pointless outside niche retro HW scenes like us. if you want rgb you get a device which outputs RGB. also I'd guess the conversion will result in loss of quality. |
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Golara
Account closed
Registered: Jan 2018
Posts: 212 |
Quote: because its mostly pointless outside niche retro HW scenes like us. if you want rgb you get a device which outputs RGB. also I'd guess the conversion will result in loss of quality.
The way I'd do it is like any capture device. Receive Svideo signal, convert it into pixel framebuffer and read it to create analog RGB signal. The key is to do it fast enough to not introduce lag. If you could prepare everything in the vertical blank and read one frame and output another (previous) at the same time there would be only one frame lag. Acceptable for C64 demos I'd say. I wish such thing existed, hell, I could try making it myself. I just want some confirmation from someone in the known if it's even possible. Maybe I'm missing some key thing that makes it not. |
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Mr. SID
Registered: Jan 2003
Posts: 424 |
Why use a frame buffer, if you could use a line buffer and only have one line of lag? |
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Golara
Account closed
Registered: Jan 2018
Posts: 212 |
Quote: Why use a frame buffer, if you could use a line buffer and only have one line of lag?
hehe even better. |
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