- This topic has 53 replies, 4 voices, and was last updated 6 months, 4 weeks ago by
.
-
Posts
-
Just to make sure:
HCFR can make Pi to emulate HDR HDMI signal, but cannot make windows laptop’s own HDMI port to output HDR signal?Are there any paid software for macOS for calibrating, that works with i1display(3)?
PGenerator “SD card OS” on Pi is the one that generates HDR or SDR patterns. Client software like HCFR, Pgen, Calman or Lightspace tells it what patch to show.
And that is the missing part on win/macOS laptop: can you configure laptops HDMI output to work as you want at OS level? (1st question) and can you have an app to show certain RAW non color managed patch color(SDR) or certain PQ HDR encoded RAW value? (2nd one)There is Calman Patterns for macOS that should be able to do 1st & 2nd questions, at least on Apple displays. I have not used it so I cannot say positive or negative things about it. Also you’ll need a computer with calman, so it’s not going to be cheap.
But if you have a Windows (x64) laptop… everything is easier: Connect through lan or BT to a pi with Pgen and test it. For basic SDR testing before buying your pi4 you can use a borrowed old pi. Once you tested the apps, get a pi 4 and do your SDR or HDR measurements.
Strange,
https://store.portrait.com/patterns-addon.htmlPatterns are for a mac, but you need “calman licence” (is Home version enough) that is only available for Windows.
Really?If I may ask here,
Would it be easy to find a PSU, ie. charger for RP4 that supports 5V 3A it needs?
Would be stupid to buy one for it only, if I need it few hours a year.Strange,
https://store.portrait.com/patterns-addon.htmlPatterns are for a mac, but you need “calman licence” (is Home version enough) that is only available for Windows.
Really?It’s a “pattern generator” hence its name. It’s like a pi, but on the mac for the displays conected to the mac. And paid.
If I may ask here,
Would it be easy to find a PSU, ie. charger for RP4 that supports 5V 3A it needs?
Would be stupid to buy one for it only, if I need it few hours a year.Check if the “charging port” in some display or laptop provides that current. If not.. 8 bucks man.
I’d like to cc some photos and maybe a video sometimes with my “basic” Samsung 4k-tv from 2017 (UE49KU6645U, edge lit I guess, Samsung does not tell a lot).
Maybe I missread your 1st post.
Do you want to use your TV, standalone, to show photos or videos accuratelly?
or
Do you want to use the TV as a 2nd monitor, ALWAYS pluged to your macbook?
I assumed 1st one in my reply: TV alone, by itself showing videos or Photos… hence using built in calibration tools: CMS, primaries control and n-point greyscale through pi and some app to take masurements.
For 2nd one you just need to set TV on a computer preset, 0-255 full range, 4:4:4, RGB, native res and the max refresh supported by TV HDMi input (which may be lower than 60Hz for RGB full range 4:4:4 native res, depending on TV). Then open displayCAL, and calibrate like a common monitor (although pre adjustment or n-point grayscale may ease things). Grey calibration will be done on GPU VCGT and after grey calñibration display will be profiled measuing primaries and nominal gamma.
You’ll need color managed apps to show images or play videos (mac photos will work and IINA is a good color managed player, Resolve for mac can use ICC profile in display)If I may ask here,
Would it be easy to find a PSU, ie. charger for RP4 that supports 5V 3A it needs?
Would be stupid to buy one for it only, if I need it few hours a year.Check if the “charging port” in some display or laptop provides that current. If not.. 8 bucks man.
Yes, it is just a ideological decision, that I would like to avoid buying accessories for just one use, especially when use is rare. But I was told in local fb-group, that 2.4A charger is just fine. The rest of that 15W is for addons.
I’d like to cc some photos and maybe a video sometimes with my “basic” Samsung 4k-tv from 2017 (UE49KU6645U, edge lit I guess, Samsung does not tell a lot).
Maybe I missread your 1st post.
Do you want to use your TV, standalone, to show photos or videos accuratelly?
or
Do you want to use the TV as a 2nd monitor, ALWAYS pluged to your macbook?
I assumed 1st one in my reply: TV alone, by itself showing videos or Photos… hence using built in calibration tools: CMS, primaries control and n-point greyscale through pi and some app to take masurements.
For 2nd one you just need to set TV on a computer preset, 0-255 full range, 4:4:4, RGB, native res and the max refresh supported by TV HDMi input (which may be lower than 60Hz for RGB full range 4:4:4 native res, depending on TV). Then open displayCAL, and calibrate like a common monitor (although pre adjustment or n-point grayscale may ease things). Grey calibration will be done on GPU VCGT and after grey calñibration display will be profiled measuing primaries and nominal gamma.
You’ll need color managed apps to show images or play videos (mac photos will work and IINA is a good color managed player, Resolve for mac can use ICC profile in display)The second one.
And for the better result, I’d like to _calibrate_ the tv and then profile it with DisplayCAL from the mac.
If the calibration is way off, more tones are lost in profiling.
I’m old and back in the day this was a real problem causing banding. Which I notice more than average.
With 8-bit colors there aren’t so many to throw away.Strange,
https://store.portrait.com/patterns-addon.htmlPatterns are for a mac, but you need “calman licence” (is Home version enough) that is only available for Windows.
Really?It’s a “pattern generator” hence its name. It’s like a pi, but on the mac for the displays conected to the mac. And paid.
I just noticed: “Without Calman, Patterns™ may be used via a web interface allowing manually entry of RGB Triplets for patch generation.”
So buying a windows software with it is not mandatory.
Iguess their idea is to show patterns from the mac and attach colorimeter to windows and transfer the created icc-profile then to mac?
I’d like to cc some photos and maybe a video sometimes with my “basic” Samsung 4k-tv from 2017 (UE49KU6645U, edge lit I guess, Samsung does not tell a lot).
Maybe I missread your 1st post.
Do you want to use your TV, standalone, to show photos or videos accuratelly?
or
Do you want to use the TV as a 2nd monitor, ALWAYS pluged to your macbook?
I assumed 1st one in my reply: TV alone, by itself showing videos or Photos… hence using built in calibration tools: CMS, primaries control and n-point greyscale through pi and some app to take masurements.
For 2nd one you just need to set TV on a computer preset, 0-255 full range, 4:4:4, RGB, native res and the max refresh supported by TV HDMi input (which may be lower than 60Hz for RGB full range 4:4:4 native res, depending on TV). Then open displayCAL, and calibrate like a common monitor (although pre adjustment or n-point grayscale may ease things). Grey calibration will be done on GPU VCGT and after grey calñibration display will be profiled measuing primaries and nominal gamma.
You’ll need color managed apps to show images or play videos (mac photos will work and IINA is a good color managed player, Resolve for mac can use ICC profile in display)The second one.
And for the better result, I’d like to _calibrate_ the tv and then profile it with DisplayCAL from the mac.Then no need for the pi4. It will work as any other display connected to a mac.
I missread you, I though that you want to calibrate a tv WITH the mac to use as TV, not to use TV as display connected to your computer.If the calibration is way off, more tones are lost in profiling.
I’m old and back in the day this was a real problem causing banding. Which I notice more than average.
With 8-bit colors there aren’t so many to throw away.AMD and Silicon GPUs in mac should have more than 8bit LUTs and dithering, so no visual loss unless display was waaaay off. And there is a way to know: measure it vs ideal edid profile
Strange,
https://store.portrait.com/patterns-addon.htmlPatterns are for a mac, but you need “calman licence” (is Home version enough) that is only available for Windows.
Really?It’s a “pattern generator” hence its name. It’s like a pi, but on the mac for the displays conected to the mac. And paid.
I just noticed: “Without Calman, Patterns™ may be used via a web interface allowing manually entry of RGB Triplets for patch generation.”
So buying a windows software with it is not mandatory.
You’ll need to take measurements and compare to someting. You can take free measures comandline with argyll “spotread” but calculations from each patch to reference need to be donde by somebody… and if there is no app, that one is you.
So you need to buy Calman (window), use HCFR in manual mode where app expects you to put manually certain patches on display (windows) or maybe PGen_client if you want to use a pi4 (windows, unless you manage to recompile it for macos).
Iguess their idea is to show patterns from the mac and attach colorimeter to windows and transfer the created icc-profile then to mac?
It is not meant to use that way. That Patterns is meant to act like HCFR/Calman, to guide you in CMS / n-point OSD = you modify display.
Once it’s modified (once it is calibrated like you woudl calibrate a TV to be used as TV, excluding gamma and primaries limitation to Rec709) just measure on mac with DIsplayCAL and it will create ICC profile (with or without optional VCGT grey calibration)
I would like to continue this calibrating issue.
I bought pi4.
Now I read a bit about PGenerator from https://www.avsforum.com/threads/dedicated-raspberry-pi-pgenerator-thread-set-up-configuration-updates-special-features-general-usage-tips.3167475/In the first post, there is a link to download: https://drive.google.com/file/d/14W2mEaQrPs5FOnuFiRcvj6YTNemBI2Zh/view?usp=sharing
And it does not work.
Do I need now to buy PGenerator from £10 from https://lightillusion.com/pgenerator.html ?
