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Old 26 January 2019, 20:01   #1
LittleAnimal255
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Thumbs up Composite to HDMI adaptor for £6

Not sure if interested, but may be useful to have lying around for maintenance and testing.

Under the following title on eBay is a fairly good USB-powered converter that lets you use any HDMI monitor with the composite output on the Amiga. I won't post a link as it'll decay like all the others, you can just search for it

Composite AV CVBS RCA to HDMI Video Converter Adapter 720/1080p Upscale White TR

Screenshots attached don't show the flicker on interlace but do exaggerate slightly wavy "moire" effect on detailed images, but for £6 it's pretty good, especially if you're doing some config work and need to flick between monitor profiles and PAL resolutions for a while, or playing games that only work on normal modes. Didn't test whether sound passes through okay as monitor has no speakers
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Old 27 January 2019, 08:13   #2
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Does it keep the progressive 50 frames per second intact?
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Old 27 January 2019, 23:14   #3
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Slightly cheaper if you get it in Black.
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Old 29 January 2019, 03:54   #4
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Quote:
Originally Posted by Jope View Post
Does it keep the progressive 50 frames per second intact?
I have no idea, it displays all PAL modes that aren't interlaced without any issues, namely 1280x256, 320x256 and 640x256 if that's what you mean? If not, how would I found that out?
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Old 29 January 2019, 03:58   #5
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Slightly cheaper if you get it in Black.
Oh yes, about 50p cheaper in black, tempting to smash one up and mount it inside the case at that price.
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Old 29 January 2019, 04:25   #6
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Composite? What's the point of that?
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Old 29 January 2019, 05:15   #7
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Interesting...!
Interlaced modes don't show up at all or do you see artifacts etc.?

P.S. It would seem the output is 4:3 stretched to 16:9 by the TV, but can be set as correct (4:3) with TV options/menus (if available on the TV)...
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Old 29 January 2019, 06:31   #8
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Originally Posted by LittleAnimal255 View Post
I have no idea, it displays all PAL modes that aren't interlaced without any issues, namely 1280x256, 320x256 and 640x256 if that's what you mean? If not, how would I found that out?
Look at the scrolling in something that is updated every frame. The scroll text inna crack intro, or for example the pinball tables in pinball dreams. If the motion is not as fluid as with a crt, then you know.
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Old 29 January 2019, 11:34   #9
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Composite? What's the point of that?
As stated above really, for people who don't want to hunt down a multisync monitor just for games, or don't want to buy a composite to USB video grabber, or don't want to play with monitor configurations.
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Old 29 January 2019, 11:38   #10
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Originally Posted by Supamax View Post
Interesting...!
Interlaced modes don't show up at all or do you see artifacts etc.?

P.S. It would seem the output is 4:3 stretched to 16:9 by the TV, but can be set as correct (4:3) with TV options/menus (if available on the TV)...
The second and third photographs are interlaced mode, 640x512. The flickering is just like plugging in a normal TV! Those wavy bands you see in the screenshots are more of a by-product of my camera than the device, although around interlaced text in can get difficult to read my smaller fonts as the output is slightly blurred too, again just like the real thing. Gamers might prefer this to a VGA output or scan-doubled solution for that reason!
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Old 29 January 2019, 11:42   #11
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Originally Posted by Jope View Post
Look at the scrolling in something that is updated every frame. The scroll text inna crack intro, or for example the pinball tables in pinball dreams. If the motion is not as fluid as with a crt, then you know.
It's fast enough to see the flicker of interlaced mode, and the scrolling text in Red Sector Demo Maker looks indistinguishable from a normal composite output to me. I think I'd need a faster brain to spot any difference though
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Old 29 January 2019, 12:05   #12
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Interesting. :-)
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Old 30 January 2019, 01:06   #13
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Everyone should buy one before somebody decides to put an Amiga sticker on it and sell it for £40 instead...
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Old 30 January 2019, 04:46   #14
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Quote:
Originally Posted by LittleAnimal255 View Post
The second and third photographs are interlaced mode, 640x512. The flickering is just like plugging in a normal TV! Those wavy bands you see in the screenshots are more of a by-product of my camera than the device, although around interlaced text in can get difficult to read my smaller fonts as the output is slightly blurred too, again just like the real thing.
Very interesting.
Just a question: in the second photo I see some scattered little horizontal white lines (a few pixels long, 10..15 pixels I think) which look like the old VCR dropouts (which were black, though). Am I right?

Quote:
It's fast enough to see the flicker of interlaced mode, and the scrolling text in Red Sector Demo Maker looks indistinguishable from a normal composite output to me. I think I'd need a faster brain to spot any difference though
VERY interesting
Would you like to write a link (I know, it's temporary and it will disappear/change soon. You can send me a pvt msg if you prefer) to the one you bought? eBay, I suppose...
I see many, with different prices. Did you bought one from UK or directly from China?
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Old 01 February 2019, 03:15   #15
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Very interesting.
Just a question: in the second photo I see some scattered little horizontal white lines (a few pixels long, 10..15 pixels I think) which look like the old VCR dropouts (which were black, though). Am I right?

Oh I see what you mean - no that is actually my WBpattern dropped to 4 colour mode, I should have removed that before taking the photo sorry! Image is clean and looks very much just like a cathode ray tube picture, slightly blurred and good for games.

VERY interesting
Would you like to write a link (I know, it's temporary and it will disappear/change soon. You can send me a pvt msg if you prefer) to the one you bought? eBay, I suppose...
I see many, with different prices. Did you bought one from UK or directly from China?
Exact one I bought was from seller topstore222, link below:
https://www.ebay.co.uk/itm/153235945...m=153235945023
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Old 02 February 2019, 05:35   #16
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Originally Posted by LittleAnimal255 View Post
Oh I see what you mean - no that is actually my WBpattern dropped to 4 colour mode, I should have removed that before taking the photo sorry! Image is clean and looks very much just like a cathode ray tube picture, slightly blurred and good for games.
Very well, then!
This adapter looks more and more interesting. I think I'll buy one, just in case .
Maybe it could be also good for a ZX Spectrum (video composite modded), or C64, and/or some consoles etc. ... ?

Quote:
Exact one I bought was from seller topstore222, link below:
https://www.ebay.co.uk/itm/153235945...m=153235945023
Thanks
It doesn't ship to Italy but I see a lot of sellers for that adapter, so I'll probably find one with a similar price.

Last edited by Supamax; 02 February 2019 at 05:41.
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Old 02 February 2019, 11:27   #17
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That's a very good point, I might have to get my Sam Coupe out the attic and see if it works on that!

Did I mention I have a Sam Coupe?

I'm going to order the cheapest possible one I can find on eBay and test that on everything, might even work on my dad's Sony Hi-8 video camera output.

Edit: Watch out when searching as some that appear cheaper are marked as HDMItoAV rather than AVtoHDMI. They look the same at first glance, but do the exact opposite, namely take HDMI output and turn it into a composite output. Might get one for reasons I don't know of yet.

Last edited by LittleAnimal255; 02 February 2019 at 11:40. Reason: Information update
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Old 03 February 2019, 05:12   #18
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Quote:
Originally Posted by LittleAnimal255 View Post
Did I mention I have a Sam Coupe?
Great. Nice machine!

Quote:
I'm going to order the cheapest possible one I can find on eBay
Another one?

Quote:
might even work on my dad's Sony Hi-8 video camera output
Hmmm, it should work, unless the Hi-8 camera has S-Video output only.

Quote:
Watch out when searching as some that appear cheaper are marked as HDMItoAV rather than AVtoHDMI. They look the same at first glance, but do the exact opposite, namely take HDMI output and turn it into a composite output.
Yes, thanks, I noticed that .

Quote:
Might get one for reasons I don't know of yet.
I can't think of a possible use of that, right now...
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Old 04 February 2019, 23:30   #19
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Haha I'm looking at this at the moment but in reverse! I want to use for laptop to emulate DOSBox and want the night downscaled graphics without pixels lol.
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Old 19 February 2019, 06:09   #20
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Quote:
Originally Posted by LittleAnimal255 View Post
I have no idea, it displays all PAL modes that aren't interlaced without any issues, namely 1280x256, 320x256 and 640x256 if that's what you mean? If not, how would I found that out?
How does it treat 240p/256p inputs?
Is the screen image occupying half space vertically, or (I'm not hoping it though ) is it showed fullsize vertically and with scanlines?
Would you like to show us a running game screenshot? What you want, something interesting (in lores).
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