Hello!
Context: LG 4k tv
Kind of fallback res while pure 240p (640x240) input (Menu core)
When standard core (244p?) is loaded it goes out of sync
Question: can I force exact 240p per core or 731x254 resolution per core to keep the native LG 4k TV (?) low resolution?
I forgot to mention: per core vsync_adjust=0 does not change the results ...
Thanks
Soooo well, it is difficult to achieve the low res image I need to have the "old tv filter" I want, I had a difficult time (pun intended) calculating the pixel clocks for this tv model to show under 480p res. but at least I have this, in combination with my gbs-c I think I'm done, Thanks anyway 
Apparently my LG does not support any 13,*** khz dot clock
Those sites (and reddit) helped a lot
https://morf77.pythonanywhere.com/
https://arachnoid.com/modelines/index.html
http://www.geocities.ws/podernixie/htpc/modes-en.html
Cheers 
Does this actually scale better than say 1080p/1440p? This seems like madness :p
I would probably try forced_scandoubler=1 if you wanted something close to the original resolution that was more widely HDMI compatible.
FoxbatStargazer wrote: ↑Sun Aug 13, 2023 3:25 pmDoes this actually scale better than say 1080p/1440p? This seems like madness :p
I would probably try forced_scandoubler=1 if you wanted something close to the original resolution that was more widely HDMI compatible.
Thanks for your post, I do not want to scandouble the output with the Mister, as I'm trying to avoid 480p by any means, and, anyways, at this res. the scanlines filter with the Mister is bad looking, it is not uniform. I'll try first to have the 60fps sub 250p, fix the aspect ratio respecting the 13Khz limit and after that, resizing with the gbs-c and see if I can apply the gbs-c scanlines filter without going up to 480p.
Some extra low res. For 4k tvs, if anybody wants to test (probably not xD )
632,32,64,96,264,1,3,16,13807
632,-16,56,40,264,1,3,6,11710
728,-16,64,48,254,1,3,6,13050
640,22,57,65,240,4,3,15,12312
720,24,65,71,240,4,3,15,13820
320,424,65,71,240,4,3,15,13820
720,24,65,71,240,4,3,15,13820
How are you going to show scanlines on flat panel without something near at least 480p as your final output? Bare minimum is you need 2x the pixels in height to show anything like that at all!
If you want to use the GBS to manage your scanlines/upscaling instead of mister, you can just take the VGA analog out (or maybe direct_video) 240p into the GBS, and then have it output a reasonable resolution (probably 1080p if possible.) You shouldn't even have to play with the mister resolution or scaler at all, because the TV's 240p abilities will be irrelevant.
I’m probably missing something but why would you want to do this?
FoxbatStargazer wrote: ↑Mon Aug 14, 2023 3:28 amHow are you going to show scanlines on flat panel without something near at least 480p as your final output? Bare minimum is you need 2x the pixels in height to show anything like that at all!
If you want to use the GBS to manage your scanlines/upscaling instead of mister, you can just take the VGA analog out (or maybe direct_video) 240p into the GBS, and then have it output a reasonable resolution (probably 1080p if possible.) You shouldn't even have to play with the mister resolution or scaler at all, because the TV's 240p abilities will be irrelevant.
Thanks for the answer, I've done all that before, it would not even be neccesary to feed the gbs with 240p, 480p would be fine. I look for the "ugliest": If the gbs passthrough 24(x)p mode+gbs scanlines+gbs screen resizing (not upscaling) gbs mode does not work as expected (480p input neccesary for the gbs to show the scanlines) I will still be happy with the same chain without scanlines. It's a lot of fun too to search for the lowest LG 4k TV res too and maybe extrapolate the results to other vga crts I have who did not accept 240p@120Hz.
Besides that, I'm learning a lot about TVs resolutions, and learning about amazing authors like users "Calamity", Paul Lutus (that guy is just a genius), "Jotego", "Jeroni Paul" (name your soon Paul if you want him to be good at IT), Rama and many others as well as to relativize certain lists as the "240p TV Processing Test" from hdretrovision, or better understanding of the Mister.ini file (did you know that direct_video=0 does not mean that your DAC is useless? me did not), and brushing up my English (a little bit).
Mister Fpga does what gbs-c cannot in terms of scaling and it would be great to have a Mister Fpga based scaler, this is maybe the final conclusion.
Voilà, finally 240p (320x240@60) on a 4K tv, not pixelated image at all, somewhat blurry (better effect than expected [to me]), ratio is applied correctly (ignore third image) scanlines does not apply correctly via Mister Fpga (as you can see in the third image), no lag, no artifacts afaik, no ghosting. Not tested with gbs-c, a more interesting approach than sharper 2x or 5X scaled images (just my opinion); I'll do some more tests with the gbs-c scanliner next week and possibly 224p test too. It is more like I remember it when I was "younger" 
,
PD: I'll try to step up little by little the frequency towards 10 Khz just to know my tvs limits.
Finally I had 480p + Scanlines (with GBSc, impossible with Mister scanline doubler option) from 240p input
and 480p + Scanlines +HQ2x filter at the same time
Thanks!