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AuthorTopic: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS  (Read 7470 times)

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Offline djos

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #30 on: April 25, 2013, 06:51:39 AM »
Quote from: gertsy;732874
Sounds like a good deal. Photos??  :)


I'll try to take some tonight on my 22" Samsung. :)
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Offline djos

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #31 on: April 25, 2013, 01:23:47 PM »
Ok so here's some Pics - a1200 @ 50hz to Samsung SyncMaster 225MS (set to 4:3 for correct image display) via SCART/RGB-HDMI Converter @ 720p50hz.

The pics are high res but were down sampled from 10MP as the files were huge - they still dont fully do the Picture Quality Justice! In some pics some colours are slightly washed out or the text not sharp, this is not how it looks in RL - especially the fine pattern from the WHDLoad screen, that is rendered really nicely in RL but hard to capture with a digital camera.

https://dl.dropboxusercontent.com/u/71121999/Amiga/Amiga%20SCART-HDMI%20Converter/P1020081.png

https://dl.dropboxusercontent.com/u/71121999/Amiga/Amiga%20SCART-HDMI%20Converter/P1020085.png

https://dl.dropboxusercontent.com/u/71121999/Amiga/Amiga%20SCART-HDMI%20Converter/P1020086.png

https://dl.dropboxusercontent.com/u/71121999/Amiga/Amiga%20SCART-HDMI%20Converter/P1020087.png

https://dl.dropboxusercontent.com/u/71121999/Amiga/Amiga%20SCART-HDMI%20Converter/P1020092.png

https://dl.dropboxusercontent.com/u/71121999/Amiga/Amiga%20SCART-HDMI%20Converter/P1020091.png

Im sure you'll all agree, there is nothing under $50USD that even comes close to this PQ! :cool:
« Last Edit: April 25, 2013, 01:34:13 PM by djos »
[SIGPIC][/SIGPIC] Amiga 1200 w/ ACA1220 16Mhz 128MB w/ RTC, 4GB CF-HDD, Roland MT-32 MIDI Synthesiser
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Offline gertsy

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Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #32 on: April 27, 2013, 04:35:12 AM »
That looks fantastic. "Special"
I'm in.
Bought a new Amiga SCART cable(Could build one but can't be stuffed) and the unit just now.  My main PC monitor is a BEN Q GL2440 hoping I can just plug into that.  Makes the desk much tidier with just one monitor on it.

Thanks for the tip.  It actually looks like quality hardware as well.
« Last Edit: April 27, 2013, 04:41:56 AM by gertsy »
 

Offline djos

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #33 on: April 27, 2013, 04:55:44 AM »
Good stuff! :)

Does your BenQ support Hdcp? If it has a hdmi port it will for certain but not all dvi-d only screens do. I finally figured out this is why it doesn't work with my Mitsi 19" LCD monitor.
[SIGPIC][/SIGPIC] Amiga 1200 w/ ACA1220 16Mhz 128MB w/ RTC, 4GB CF-HDD, Roland MT-32 MIDI Synthesiser
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Offline Iggy

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #34 on: April 27, 2013, 05:10:32 AM »
You guys have better monitors then I do. ;(
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Offline gertsy

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Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #35 on: April 27, 2013, 05:24:30 AM »
Quote from: djos;733046
Good stuff! :)

Does your BenQ support Hdcp? If it has a hdmi port it will for certain but not all dvi-d only screens do. I finally figured out this is why it doesn't work with my Mitsi 19" LCD monitor.


It has HDMI in but it is a cheapy.  Here's hoping. Benq website in Aus is down.  Probably gone out of business. I have another "gigantic" HDMI option like you.. :)  Wide screen Bubble and Squeak. I'll need joystick cable extenders.
« Last Edit: April 27, 2013, 05:28:13 AM by gertsy »
 

Offline djos

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #36 on: April 27, 2013, 05:29:25 AM »
Hdcp is part of the hdmi standard and optional for dvi-d, it's just the DRM the movie studios forced upon intel when making the hdmi standard.

So you'll be fine as the same chip that runs the hdmi port usually runs dvi-d port. :)
[SIGPIC][/SIGPIC] Amiga 1200 w/ ACA1220 16Mhz 128MB w/ RTC, 4GB CF-HDD, Roland MT-32 MIDI Synthesiser
Amiga 500 w/ KS2.05, 1Mb Chip-Ram, CF-IDE w/4MB Fast-Ram, FDD Boot Selector, HxC RevC Floppy emulator
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Offline djos

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #37 on: April 29, 2013, 02:24:43 AM »
Quote from: djos;732849
It also converts composite and s-video using a cheap scart plug adapter.

Good news folks, using a scart plug adapter it most definitely converts composite and s-video to Hdmi along with the audio.

I tested the s-video with my TiVo and got a superb picture, really quite impressive considering and it shows "scart SV" via the osd.

The c64 via composite also produced a surprisingly nice picture considering, like really really nice, was hard to believe it was composite, only the softness and bit of colour bleed gave it away but it was a much better pic than my Bravia TV produces when fed the same signal!

Bad news tho, using my very cheap c64 s-video cable it doesn't recognise the signal as s-video (shows "scart av" on the osd) and as a result produces a truly aweful aweful picture!

I checked my S-Video cable and it does have the 300ohm resistor but my c64 still wont work properly with my SCART-HDMI Converter - seems Commodore video is just too far out of spec for it to recognize it properly. :(

c64 Composite does work tho and looks surprisingly good.
« Last Edit: April 29, 2013, 02:28:10 AM by djos »
[SIGPIC][/SIGPIC] Amiga 1200 w/ ACA1220 16Mhz 128MB w/ RTC, 4GB CF-HDD, Roland MT-32 MIDI Synthesiser
Amiga 500 w/ KS2.05, 1Mb Chip-Ram, CF-IDE w/4MB Fast-Ram, FDD Boot Selector, HxC RevC Floppy emulator
Commodore 64 w/ 1541 Ultimate-II inc Tape Adapter, JiffyDOS, 1541 Disk Drive, 1531 Datasette, Flyer Net Modem
 

Offline WeiXing3D

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #38 on: April 29, 2013, 05:02:52 AM »
@djos - I have one of those scart adapters (it came with a BenQ HD TV I bought several years ago) and I also have the RGB HDMI to HDMI Scale Coverter recommended in the thread. Could you please let me know I will need to connect my A1200 to my LG HD monitor with HDMI, DVI and VGA ports?


Quote from: djos;733205
Good news folks, using a scart plug adapter it most definitely converts composite and s-video to Hdmi along with the audio.

I tested the s-video with my TiVo and got a superb picture, really quite impressive considering and it shows "scart SV" via the osd.

The c64 via composite also produced a surprisingly nice picture considering, like really really nice, was hard to believe it was composite, only the softness and bit of colour bleed gave it away but it was a much better pic than my Bravia TV produces when fed the same signal!

Bad news tho, using my very cheap c64 s-video cable it doesn't recognise the signal as s-video (shows "scart av" on the osd) and as a result produces a truly aweful aweful picture!

I checked my S-Video cable and it does have the 300ohm resistor but my c64 still wont work properly with my SCART-HDMI Converter - seems Commodore video is just too far out of spec for it to recognize it properly. :(

c64 Composite does work tho and looks surprisingly good.
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Offline djos

Re: 15Khz RGB YUV Video to VGA Converter Scaler For Amiga Atari Apple IIGS
« Reply #39 on: April 29, 2013, 05:12:26 AM »
Quote from: WeiXing3D;733219
@djos - I have one of those scart adapters (it came with a BenQ HD TV I bought several years ago) and I also have the RGB HDMI to HDMI Scale Coverter recommended in the thread. Could you please let me know I will need to connect my A1200 to my LG HD monitor with HDMI, DVI and VGA ports?

Hi, the little SCART adapter I was showing before is just for Composite and S-Video input into the SCART-HDMI Converter - to connect an Amiga you'll need an Amiga DB23-Scart_RGB cable, the SCART-HDMI Converter and a HDMI Cable.

That's it. :)
[SIGPIC][/SIGPIC] Amiga 1200 w/ ACA1220 16Mhz 128MB w/ RTC, 4GB CF-HDD, Roland MT-32 MIDI Synthesiser
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Offline djos

So I went to the trouble of breadboarding a low-pass filter for use with the c64's S-Video:



I discovered using 100nF Cap and 360ohm resistor didnt work too well - the chrominance info was completely MIA and only the luminance info was getting thru. my wiring tested out ok the filter was obviously filtering too much.

Anyway for whatever reason I thought Id remove the filter and plug the c64 directly into the scart converter again and to my surprise it works fine and the SCART-HDMI converter showed "Scart SV" as it should.

The picture is quite decent too:


and comparable to native s-video direct to my Bravia:


I must have done something dumb like not plug my cable in properly! :p
« Last Edit: May 03, 2013, 01:32:17 PM by djos »
[SIGPIC][/SIGPIC] Amiga 1200 w/ ACA1220 16Mhz 128MB w/ RTC, 4GB CF-HDD, Roland MT-32 MIDI Synthesiser
Amiga 500 w/ KS2.05, 1Mb Chip-Ram, CF-IDE w/4MB Fast-Ram, FDD Boot Selector, HxC RevC Floppy emulator
Commodore 64 w/ 1541 Ultimate-II inc Tape Adapter, JiffyDOS, 1541 Disk Drive, 1531 Datasette, Flyer Net Modem
 

Offline gertsy

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Quote from: djos;733205
Good news folks, using a scart plug adapter it most definitely converts composite and s-video to Hdmi along with the audio.

I tested the s-video with my TiVo and got a superb picture, really quite impressive considering and it shows "scart SV" via the osd.

The c64 via composite also produced a surprisingly nice picture considering, like really really nice, was hard to believe it was composite, only the softness and bit of colour bleed gave it away but it was a much better pic than my Bravia TV produces when fed the same signal!

Bad news tho, using my very cheap c64 s-video cable it doesn't recognise the signal as s-video (shows "scart av" on the osd) and as a result produces a truly aweful aweful picture!

I checked my S-Video cable and it does have the 300ohm resistor but my c64 still wont work properly with my SCART-HDMI Converter - seems Commodore video is just too far out of spec for it to recognize it properly. :(

c64 Composite does work tho and looks surprisingly good.


Just got mine all set up.  Tried it with my A1200 and 500 on our big Panasonic Plasma in the lounge. Amazing picture. Crisp clear and flicker fixed in interlaced mode too.  Beautiful.  Thanks for the tip djos.
Haven't tried the C64 yet and I've gotta get another HDMI cable to use my BenQ monitor. Pretty sure it will work on that too.
« Last Edit: May 12, 2013, 03:32:29 AM by gertsy »
 

Offline djos

No worries mate :)
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Offline gertsy

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Quote from: djos;734587
No worries mate :)


The unit: http://www.ebay.com.au/itm/310620740857?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_6693wt_1040&clk_rvr_id=478495447823
Apart from the shocking clarity the best bit is the way it handles dithering or gouraud shading.  Most video converters have big trouble with that especially the "silver" look. Special!

On High res interlaced PAL there is a slight shimmer of drop down menu items for a split second but if you didn't know it wasn't supposed to happen you might think it was an effect. It could just be an artefact of the upscaling. Also when jumping from low res back to high res the same split second shimmer is evident but barely noticeable. Almost like a settling.
I'm pointing out tiny insignificant blemishes on what I think is the best Amiga display I've seen since vanilla 1084.  I have / used 2320(Amber), Picasso II, Retina Z3 and they either suffered from shading artefacts or the washout look. This is crystal and very 1084ish.

I ran through a few WHDload games in front of the big screen last night; Super Cars, Superfrog, Loopz, Historyline(sucked in for too long there!)  Had to sit a good 3 metres back from the screen but the contrast was great and the display rock steady.  Might have something to do with the Panasonic VT30 1080p screen though. :)

Once I pick up another HDMI cable I try out my cheapy BENQ Monitor and let you know if the result is the same.

Cheers.
« Last Edit: May 12, 2013, 04:30:58 AM by gertsy »
 

Offline bbond007

Quote from: WeiXing3D;731659
Is anyone using one of this? Any comments or suggestions? What else would be needed to use with A1200?
http://i.ebayimg.com/t/15Khz-RGB-YUV-Video-to-VGA-Converter-Scaler-For-Amiga-Atari-Apple-IIGS-/00/s/MjU2WDUxOQ==/$(KGrHqF,!qsE+oVyuLSMBP-64DI7i!~~60_12.GIF


this thing does work, but sometimes gets confused about interlaced mode. Its like it gets every other scanline reversed like 50% of the time. I put a push button on the power cord to reset it when it got confused in interlaced mode.  

It shows a lot of banding and I was generally not very happy with it.

That being said, its better than nothing and it does look better than composite.