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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Thu Jul 04, 2019 9:38 am 


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Yes, because of the horizontal resolution, the maximum one can achieve (at Lx5) is 3 v scanlines per dot (ie 6 pixels per dot with every other blacked out). So I deduce the top of the L is 5 dots wide. :)
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Thu Jul 04, 2019 1:35 pm 


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I'm the only one who wants less in x5 :mrgreen:

@Dochartaigh: more columns (imagining greater multiples) wouldn't look much different from no columns at all anyway. On a LCD the increased fine-ness would appear only over still images. Also the negative impact on overall brightness would be even more.
This, might be okay on a very bright OLED only.

My philosophy for LCDs remains to aim for the cleanest/sharpest image with the least possible darkened elements on screen so the crt~ish simulation doesn't get in the way of motion clarity and brightness output. Works better in practice/gameplay than anything that tries to force an imitation of finer CRT phosphored scanlines the kind I know my flat panel can't do justice to.
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Thu Jul 04, 2019 2:37 pm 


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great macro shots of those CRTs btw!


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Thu Jul 04, 2019 4:41 pm 



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Xyga wrote:
I'm the only one who wants less in x5 :mrgreen:

You very well may be the only person lol. I did notice when I flipped to 2x (think it was 2x) that the individual vertical dots got REALLY big which would kinda do what you want...but 2x is just too low-res for a medium-size flatscreen IMO (just doesn't look clean to my eyes on my flatscreen).




Xyga wrote:
@Dochartaigh: more columns (imagining greater multiples) wouldn't look much different from no columns at all anyway. On a LCD the increased fine-ness would appear only over still images.

This is completely true. I was able to take a toothpick to my Seleco and Panasonic CRT and count the individually vertical 'dots' (or is 'phosphor 3x R,G,B groupings' a better yet still awkward phrase to use?) with my naked eye. BUT, On my BVM I could do no such thing because they all blended together and I had to take a pic then zoom in just to be able to see the individual lines to count - so it really is pretty much just straight solid lines on the BVM because of it's 900 TV Lines – especially at regular viewing distances from a few feet away.




Xyga wrote:
My philosophy for LCDs remains to aim for the cleanest/sharpest image with the least possible darkened elements on screen so the crt~ish simulation doesn't get in the way of motion clarity and brightness output. Works better in practice/gameplay than anything that tries to force an imitation of finer CRT phosphored scanlines the kind I know my flat panel can't do justice to.

Brightness is definitely key, and a very hard thing to balance to make look good on a modern flatscreen while STILL getting decent looking CRT-esque scanlines (when the scanlines darken the image drastically as we know). I don't own an OLED (like the majority of the world right now), so I'm limited to LCD/VA technology currently.

BUT, to talk about the brightness dilemma when comparing OSSC+modern-flatscreen's to CRT's, I wanted to demonstrate what in my eyes the ideal scanlines could someday be like. These examples are from my probably favorite 240p CRT monitor - a 32" PVM-3230. This one is a bit special in that it's huge for a pro monitor, AND it uses a super-large 0.9mm dot pitch which lets through a LOT of light (akin to consumer TV's which were designed to be viewed in brightly lit rooms, where most of the other PVM's and ALL of the BVM models are meant to be viewed in a more dimly-lit room to appear at the correct brightness).

This really gives almost a plasma-esque image with nice big individual 'dots'. Super clear delineation between each 'dot' because of RGB and the PVM's high voltage regulator nearly all (besides the Sony FV310?) consumer CRT's lack (and this monitor is pretty aged, and I haven't even gotten around to calibrating it yet so not perfect), but you can hopefully see what I mean with these screenshots, followed by a zoomed-in image of each:

Image

Image

Image

Image

Image

Image


This last one is a bit larger so I added a spoiler tag. I did a slight Photoshop filter on it to demonstrate what I believe would be the absolutely IDEAL way to display scanlines on a modern display (at some point down the line, hopefully).

What this shows is the unique bloom a CRT has, which is a quintessential element of this display technology, which even on a 32" CRT (which is WAY smaller than the average flatscreen size anymore) is clearly evident even from normal viewing distances. Notice the wavy sine-wave-ish part of the gray-blue lines? How no line is perfectly-even straight-row on the top and bottom? How the thickness of each line varies with the brightness? That's what I would LOVE to have happen with these upscalers some day and would give a MUCH more realistic experience.

Spoiler: show
Image





Fudoh wrote:
great macro shots of those CRTs btw!

Thanks. That was my ancient iPhone 6 Plus if you believe that - didn't even whip out the mirrorless DSLR which puts the iPhone's camera to shame ;)




Anyway, this post is way too long, just wanted to show what I hope could be achievable one day. Still SUPER happy with what the OSSC can do right now for sure.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Thu Jul 04, 2019 6:22 pm 


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Dochartaigh wrote:
Xyga wrote:
I'm the only one who wants less in x5 :mrgreen:

You very well may be the only person lol. I did notice when I flipped to 2x (think it was 2x) that the individual vertical dots got REALLY big which would kinda do what you want...but 2x is just too low-res for a medium-size flatscreen IMO (just doesn't look clean to my eyes on my flatscreen)


The way I'd like it I rather get the same amount as in x3 (don't I ? you can check my attempt pics on the previous page), except with the sharpness and perfect non-upscaledness of x5 (my monitor's fully x5 1080 compatible)
It looks big yes but closer to a standard res/TVL CRT, which I personally find more realistic and better suited to LCDs considering their limited motion and brightness ability.
Also high-end high-TVL CRTs sure are spendid (fantastic shot by the way!) but they were never the standard and not how I've experienced playing on CRTs all my life, so I just wish we had the option for both looks in x5, instead of having to fall back to x3.

Quote:
IDEAL way to display scanlines on a modern display

Oh well, with advanced shaders emulators could do almost everything we want including that, though with always more resolution and brightness required.
Standalone scalers though ? ouch... the full processing power of a PC dedicated to varied live input signals, and without much if any...lag ? :mrgreen: that'll be tough and expensive not matter when.
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Thu Jul 04, 2019 7:51 pm 


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Dochartaigh wrote:


Fudoh wrote:
great macro shots of those CRTs btw!

Thanks. That was my ancient iPhone 6 Plus if you believe that - didn't even whip out the mirrorless DSLR which puts the iPhone's camera to shame ;)


Love these Super Mario World shots, are they also using your iPhone 6 Plus?


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Thu Jul 04, 2019 8:09 pm 



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The recent images in this thread are like, better than porn. Thanks @Dochartaigh !


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 12:35 am 



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Gunstar wrote:
Love these Super Mario World shots, are they also using your iPhone 6 Plus?

Just checked the metadata - those were with my Sony DSLR with Zeiss lens.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 10:25 am 


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Dochartaigh wrote:
Gunstar wrote:
Love these Super Mario World shots, are they also using your iPhone 6 Plus?

Just checked the metadata - those were with my Sony DSLR with Zeiss lens.


I was seriously considering getting an iPhone if you said they were taken with one but it makes sense you used high-end equipment! Really great shots.


Last edited by Gunstar on Fri Jul 05, 2019 4:40 pm, edited 1 time in total.

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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 11:09 am 


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Gunstar wrote:
Dochartaigh wrote:
Gunstar wrote:
Love these Super Mario World shots, are they also using your iPhone 6 Plus?

Just checked the metadata - those were with my Sony DSLR with Zeiss lens.

I was seriously considering getting an iPhone if you said they were taken with one but it makes sense they were using high-end equipment! Really great shots.

Not specifically thinking of macros but even high-end smartphones still don't beat even a decent $300 camera yet if you look closely, or a it's tie under certain conditions.
It probably won't be too long, what 2~3 years? until phones match a quality equivalent to a decent 1" sensor though, then what's left of the sub-$1,000 camera market will almost certainly give its last breath...
My point being, personally if I went the phone route for photography I wouldn't spend big now, I'd wait.
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 11:37 am 


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Dochartaigh wrote:
Has anybody had issues with their TV dropping signal when the OSSC is routed through a HDMI switcher? OSSC works fine hooked up directly to the TV. Other devices on the same HDMI switcher seem to be flawless.

I have an Extron SMX switcher with 8x8 HDMI card. It'll past through the (2,3,4,5x) signal of NES, SNES, Genesis, TG16, Saturn, PS1, and PS2 just fine at all those resolutions, BUT on occasion it'll drop signal and my TV will show no picture. Turn the switchers output off, then back on and it'll sometimes work again. Turning the OSSC off then on and I always get a signal back (but at some point it'll loose signal again).


A lot of us have issues with hdmi switches and splitters. DirkSwizzler put together that big list of hdmi graveyard items in the recommended hdmi equipment thread. I can't recall ever seeing a good explanation as to why some devices like the ossc are so finicky when paired. Certainly never seen a solution besides replacing the equipment. The whole, "hdmi is voodoo" thing.

It would be nice if we could build a database of everyone's working equipment, but it's not hard to see why that really hasn't happened yet. There is no standardized test to run. With so many consoles, setups, and mod variations out there it's hard to narrow down. The most annoying issues are ones that cause you to randomly lose sync. Sometimes people are able to get repeatable results. Often you need to test a variety of games in long sessions to see if the hdmi equipment is good or not.

With hdmi matrix switchers the information is nonexistent. I desperately hoped to find someone who did stress tests on one but I found nothing video game related. Since I had to go in blind, I limited my selection to 4k supported matrix switches. It's a real bummer to hear that even the super premium Extron stuff has these issues. I've had good luck so far with a ViewHD Vhd-pro4x4. 4x4 isn't much, but it doesn't have any obvious issues so far. It has been used to run my ossc through 3 additional video processors. Let's me do quick comparisons on each one. Really hoping no issues crop up as 4k hdmi matrix switchers are expensive.

If anyone knows an 8x8 that plays well with the ossc I'd love to read about it.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 11:59 am 


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Xyga wrote:
Not specifically thinking of macros but even high-end smartphones still don't beat even a decent $300 camera yet if you look closely, or a it's tie under certain conditions.
It probably won't be too long, what 2~3 years? until phones match a quality equivalent to a decent 1" sensor though, then what's left of the sub-$1,000 camera market will almost certainly give its last breath...
My point being, personally if I went the phone route for photography I wouldn't spend big now, I'd wait.


Thanks for the insight, Xyga!


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 12:10 pm 


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Quote:
Not specifically thinking of macros but even high-end smartphones still don't beat even a decent $300 camera yet if you look closely

but smartphons are usually dead easy to use and it's much easier to get really good results. For some years now I'm using a Sony RX100-II as my every day camera and this thing is still completely overwhelming me. I have a really hard time to take good photos let alone using all the available settings. So, potential is one thing, but usability is a completely different topic.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 12:35 pm 


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Fudoh wrote:
Quote:
Not specifically thinking of macros but even high-end smartphones still don't beat even a decent $300 camera yet if you look closely

but smartphons are usually dead easy to use and it's much easier to get really good results. For some years now I'm using a Sony RX100-II as my every day camera and this thing is still completely overwhelming me. I have a really hard time to take good photos let alone using all the available settings. So, potential is one thing, but usability is a completely different topic.

Totally agree with that, actual cameras can be very hard to master. I'd definitely take a good photophone over a camera for my next one, but the quality isn't enough yet for my taste, the processing they almost inevitably apply is often felt in many places, and the optical zoom ability (I'd like a 10x/200mm) isn't really a thing yet as well.
Lately I've been mesmerized by the RX100 VI but it's too expensive and complicated, and though I don't expect the same quality on a phone any time soon, I'd be satisfied with something on the level of my current 1/2.3" compact travel "when it hits right in M" but with the ease of a smartphone.
Soon...(let's hope)
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Fri Jul 05, 2019 4:22 pm 



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Gara wrote:
A lot of us have issues with hdmi switches and splitters. DirkSwizzler put together that big list of hdmi graveyard items in the recommended hdmi equipment thread. I can't recall ever seeing a good explanation as to why some devices like the ossc are so finicky when paired. Certainly never seen a solution besides replacing the equipment. The whole, "hdmi is voodoo" thing.


Yeah this totally sucks, and sadly seems to be totally linked to something funky the OSSC does as every other HDMI device I have (even funky res older devices I convert to HDMI) work fine through the Extron SMX HDMI switcher so far.

Now not only am I out $330+shipping (had to buy 2x Extron SMX's to get all the cards I need), but I also have to totally re-do my rack AGAIN (which I thought I FINALLY finished after all these years!), and there's STILL nothing which will be guaranteed to work for me (probably need 8x8 ultimately), even from DirkSwizzler's post, because those are all regular HDMI switchers and not Matrix switchers (I need to be able to do things like loop devices back into the switch so I can do things like OSSC + Extron DSC 301 HD, along with at the same time output the Xbox 360 to two HDMI outs at once to get a digital HDMI out for the flatscreen + analog out via a HDFury3 to a HD CRT – stuff like that....I see a few more splitters/regular-switchers like the ViewHD in my future, maybe the one you bought - but would like bigger).




Fudoh wrote:
but smartphons are usually dead easy to use and it's much easier to get really good results. For some years now I'm using a Sony RX100-II as my every day camera and this thing is still completely overwhelming me. I have a really hard time to take good photos let alone using all the available settings. So, potential is one thing, but usability is a completely different topic.

Fudoh, feel free to PM me and I'll walk you through a couple easy settings you can use to maximize your camera for everyday use. You very well might be using it the same way I'll tell you to, but what can it hurt?


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sat Jul 06, 2019 6:49 am 



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I just had some oddball issue where the powered 3 in 1 switcher does not pass the signal from the ossc along and I tried adding a pig tail to the chain, which for some reason caused it to work again.

Is this something to do with what you're talking about needing a matrix switcher? My unit was working fine on this before.


Fudoh:

I've noticed some problems in trying to get pictures on my end as well and if you check the retrogameboards screenshot thread, I've had some pics posted where the contrast is really blown up, even though it's on a normal setting. I'm having better luck turning the backlight down, but I think someone was mentioning a film that could be put in front of the lens in order to reduce that contrast glare. I'll have to dig into this cause I really want to get some better quality photos posted.
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sat Jul 06, 2019 8:01 am 


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Fudoh wrote:
but smartphons are usually dead easy to use and it's much easier to get really good results. For some years now I'm using a Sony RX100-II as my every day camera and this thing is still completely overwhelming me. I have a really hard time to take good photos let alone using all the available settings. So, potential is one thing, but usability is a completely different topic.

This is the camera i use as well. I havent figured out a way to get consistent photos of screens, especially on dark backgrounds, but my camera has a fucked up focusing ring, so that's part of it.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sat Jul 06, 2019 8:09 am 



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Did a couple custom profiles tonight through watching videos (mostly from Firebrandx). Decided to use 4x for everything so nothing is cut-off.

NES went perfect - I can't believe what a difference there is between the Generic 4:3 mode and the advanced timing 256x240 one I made.

TG16 I couldn't get the 256x240 adv. timings to work properly - only Generic 4:3 gives me a decent grid and checkerboard. Anybody have and settings for a TG16 with SSDS3 and FU-RGB board I can try?




Sega Genesis looks great! I did notice a little bit of noise on black screens though (in the below pic I pumped up the brightness to make it more evident). This doesn't show up on my CRT's even when I turn brightness up. The only two options I could find to fix it is to turn the brightness down on my TV, or change the pre-ADC Gain from 8 to 5 - both darken the image more than I like - ideas?

Image



SNES went very good. I find the SD2SNES menu text to be a little harder to read than the others but still legible.

Only Saturn and above tomorrow....


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sat Jul 06, 2019 8:30 pm 


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SD2SNES menu is 512x224 so doesn’t look right with 256x240 mode.

Btw FirebrandX has made menu profiles for all consoles except PS1 pretty much, check them out.
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sat Jul 06, 2019 9:26 pm 



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Harrumph wrote:
Btw FirebrandX has made menu profiles for all consoles except PS1 pretty much, check them out.

His ones for PCE/TG16 are for a Super Grafx with Voultar RGB board installed. They don't play nice with a SSDS3 w/ FU-RGB board installed (on my console at least).


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sat Jul 06, 2019 10:02 pm 


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Dochartaigh wrote:
Harrumph wrote:
Btw FirebrandX has made menu profiles for all consoles except PS1 pretty much, check them out.

His ones for PCE/TG16 are for a Super Grafx with Voultar RGB board installed. They don't play nice with a SSDS3 w/ FU-RGB board installed (on my console at least).


That shouldn’t matter as far as sample rate, active area etc. The video modes are all the same afaik. The only thing you need to tweak is sampling phase, which will always differ from console to console.
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sat Jul 06, 2019 10:15 pm 



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Harrumph wrote:
That shouldn’t matter as far as sample rate, active area etc. The video modes are all the same afaik. The only thing you need to tweak is sampling phase, which will always differ from console to console.

That's exactly what I did to tweak the profiles for NES, SNES, Genesis, and Saturn so far - ONLY tweaked the sampling phase, maybe 1 digit different to center the image and they're all perfect.... But when I try the same on my TG16 +SSDS3 + FU-RGB it doesn't work, like not even close. Can't figure it out.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sun Jul 07, 2019 3:39 am 



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Harrumph wrote:
Dochartaigh wrote:
Harrumph wrote:
Btw FirebrandX has made menu profiles for all consoles except PS1 pretty much, check them out.

His ones for PCE/TG16 are for a Super Grafx with Voultar RGB board installed. They don't play nice with a SSDS3 w/ FU-RGB board installed (on my console at least).


That shouldn’t matter as far as sample rate, active area etc. The video modes are all the same afaik. The only thing you need to tweak is sampling phase, which will always differ from console to console.

How specific do you mean by "console to console"? Do you mean across brands and generations, like a TG16 is going to differ from a PS2? Or from motherboard to motherboard among the same board revision of a given console? Somewhere in the middle?


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sun Jul 07, 2019 6:48 am 



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Where should i buy the OSSC if i live in America?

The ones on eBay look sketchy.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sun Jul 07, 2019 8:53 am 


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maxtherabbit wrote:
paulb_nl wrote:
maxtherabbit wrote:
Has anyone had the opportunity to pull/build paulb-nl's fork and try out the sample rate fine tuning?


That fine tuning is for those consoles that need a fractional samplerate in optimized mode like N64 and Genesis 320. With that you are able to adjust 1/4th and 1/5th samplerate in 320x240 LineX4 and LineX5 respectively.

I finally got around to making new profiles for my N64 and Genesis - this feature kicks ass!

Perfectly crispy by setting N64 to 386 and gen (320) to 427 with a fine tune of "2" on both
The option will be updated a bit for the next firmware, so instead of setting a raw value (of which effect depends on selected lineX mode), fine-tune will be given as a decimal value (e.g. 426.65 for PSX 320col) and closest raw value gets automatically calculated for each line multiplication mode.

Xyga wrote:
@marqs: I don't know if youve noticed my post up there (the one w/ pics) or maybe I've presented my idea in a way that doesn't make sense (sorry if that's the case)

The idea would be a setting to have only half the number of columns display, in 4:3 generic modes.

Anyway I don't know, maybe it's something too troublesome or that can't be done (or there's already a way I'm not aware of ^^)
Yes, that should be fairly easy to implement.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sun Jul 07, 2019 9:07 am 


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marqs wrote:
Yes, that should be fairly easy to implement.

Thanks, I was afraid it would be a problem and maybe not worth the hassle considering the little use most users will have for such a setting (still IMHO it will expand the possibilities even if just a little, which can't be bad ^^)
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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sun Jul 07, 2019 12:38 pm 



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Is there any way of applying different scanline types based on the resolution? Example: psx sometimes switches between 240p and 480i - i'd like to have vertical+horizontal for 240p, however for 480i i'd like to switch to horizontal only as it looks bad on my screen. Any way for this to happen automatically? Cheers.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sun Jul 07, 2019 2:35 pm 



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DJ Kevgeez wrote:
Where should i buy the OSSC if i live in America?

The ones on eBay look sketchy.

General consensus is to buy from VGP and to avoid the ones on eBay and AliExpress at all costs. I live in the US, and I had no problems purchasing an OSSC from VGP a couple years ago.


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Sun Jul 07, 2019 3:59 pm 


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marqs wrote:
maxtherabbit wrote:
paulb_nl wrote:
That fine tuning is for those consoles that need a fractional samplerate in optimized mode like N64 and Genesis 320. With that you are able to adjust 1/4th and 1/5th samplerate in 320x240 LineX4 and LineX5 respectively.

I finally got around to making new profiles for my N64 and Genesis - this feature kicks ass!

Perfectly crispy by setting N64 to 386 and gen (320) to 427 with a fine tune of "2" on both
The option will be updated a bit for the next firmware, so instead of setting a raw value (of which effect depends on selected lineX mode), fine-tune will be given as a decimal value (e.g. 426.65 for PSX 320col) and closest raw value gets automatically calculated for each line multiplication mode.


what I found a bit curious about my results: I'm using linex4 for N64 and linex5 for genesis - so with a modifier or '2' that yields a samplerate of 386.5 for the N64 and 427.4 for genesis in 320px mode.

According to the thread on VGP where the N64 "deblur" sampling profile was originally discussed, you said the N64 should be each scanline 3093/4 (773.25) by the numbers, but 3094/4 (773.5) would be commensurate with what the OSSC reports for v. refresh. I got better results with a value of '2' (386.5x2=773) than with a value of '3' (386.75x2=773.5)

Spoiler: show
Also, the genesis pixel clock is exactly 4725/704 MHz according to https://pineight.com/mw/index.php?title=Dot_clock_rates If we take the OSSC's reported v refresh value of 59.91Hz, that gives a value of 427.59px/line - but again I got better results with 427.4 than 427.6 (427+"3" @linex5)

EDIT: disregard that part in spoiler tags, I went back and retested genesis - the difference is almost indistinguishable but with appropriate adjustment of sampling phase, I'm now giving a slight edge to a setting of "3" (427.6px/line)


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 Post subject: Re: OSSC (DIY video digitizer & scandoubler)
PostPosted: Mon Jul 08, 2019 4:17 pm 


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Location: Finland
maxtherabbit wrote:
what I found a bit curious about my results: I'm using linex4 for N64 and linex5 for genesis - so with a modifier or '2' that yields a samplerate of 386.5 for the N64 and 427.4 for genesis in 320px mode.

According to the thread on VGP where the N64 "deblur" sampling profile was originally discussed, you said the N64 should be each scanline 3093/4 (773.25) by the numbers, but 3094/4 (773.5) would be commensurate with what the OSSC reports for v. refresh. I got better results with a value of '2' (386.5x2=773) than with a value of '3' (386.75x2=773.5)
They are both equally far from 773.25, have you checked line5x where 386.6 should provide the best result according to calculations?
maxtherabbit wrote:
Spoiler: show
Also, the genesis pixel clock is exactly 4725/704 MHz according to https://pineight.com/mw/index.php?title=Dot_clock_rates If we take the OSSC's reported v refresh value of 59.91Hz, that gives a value of 427.59px/line - but again I got better results with 427.4 than 427.6 (427+"3" @linex5)

EDIT: disregard that part in spoiler tags, I went back and retested genesis - the difference is almost indistinguishable but with appropriate adjustment of sampling phase, I'm now giving a slight edge to a setting of "3" (427.6px/line)
My estimation for Genesis 320px mode is 3420/8=427.5 dots per line as listed in Optimal Timings page on OSSC wiki. That would also be just between your 427.4 and 427.6 so it makes sense if both provide equally good results.


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