madVR - high quality video renderer (GPU assisted)

[huhn]

just run a verification every 1-3 months if it fails do a new calibration.

[Cowboydude99]

Cool! Anything else to consider?

Also- anywhere to donate for MADVR? Seems like for such great software, I should be paying something...

[huhn]

you could inform yourself about your projectors behaviour.
how fast does it drift in the first 1000 hours of the lamp is it relative stable after that these kind of things.

they may or may not be a paid version of madVR "soon" something like never to 1-36 months.

[Cowboydude99]

Originally Posted by huhn

you could inform yourself about your projectors behaviour.
how fast does it drift in the first 1000 hours of the lamp is it relative stable after that these kind of things.

they may or may not be a paid version of madVR "soon" something like
never to 1-36 months.

I'll see what happens over time I guess.

OK, I'll keep a look out.

[Cowboydude99]

95% if what I watch us HDR Blu-ray disks.

Would I still use one of these devices?

Edit: I found this on the X-rite site;
According to X-Rite, only the Rev.B OEM version of the meter (not the Retail) manufactured from January 2017 or later is certified to measure up to 2000 nits.

So I guess it is not suitable for hdr.

[Asmodian]

2000 nits is way above what any projector can do. Even most consumer displays cannot do 2000 nits. I do not know of a better meter you could buy, at least for <$1000 USD.

Also, you can calibrate at 75% IRE, or lower if you need to. This does make sense for HDR, since most of the screen is not very close to peak most of the time.

[Cowboydude99]

In order to get the nits output, I’d need a light meter too?

I don’t know the nits, but supposed to be 2000 likens, not sure what the actual light hitting the screen would measure though.

Do I need to know this for a good calibration?

[Asmodian]

Measuring it is part of the calibration, a colorimeter can measure it.

[huhn]

you are nearly sure not even close to 200 nits even below 100 nits is pretty normal for a good projector projecting on a big screen.

[failax]

It is possible to create a table of peak luminance of every frame before, instead of processing in real time, so less powerful video card could read it?

[jkauff]

My totally ignorant opinion is that it should be possible, but it sounds like a separate utility rather than part of madVR. It would be as slow as playing the entire movie.

[Cowboydude99]

Great. I’ll pick up the colorimeter and Displaycal and get to work!

Once the calibration is done, do I need to do anything special in Madvr?

Edit:
I looked at Displaycal. It looks like it configures the computer’s color, not the PJ.

Am I missing something?

[hannes69]

Calibration has different components:
- you use test videos or patterns for setting manually contrast and brightness
- you use a calibration software (e.g. freeware HCFR) to make measurements of your projector´s colors and make use of the color calibration settings that offers your projector
- if your projector doesn´t offer sufficient calibration settings and/or for additional settings and perfection you use a calibration software (e.g. freeware DisplayCAL) that calibrates color on the source side.

It depends on your projector and your skills. If you have a projector which offers the necessary settings and you know what you are doing, then go this way and make use of the projector´s settings. If your projector has limited settings and/or you are unfamiliar with calibration and you do not have the time and pleasure for digging deeper into color calibration (well, it´s science ), then go the road with software like DisplayCAL or similar approaches by other buyable software (DisplayCAL offers all you need and is 'better' than many commercial software products in some regards). This approach is more of the kind 'automation', the other approach with the projector´s knobs is more of the kind 'fiddling until you´re satisfied, until you reached the limits of your device or the limits of your nerves"

I had the whole programme because I´m interested in this topic and for the sake of perfection. My projector has good colors out of the box, by using the projector´s settings I already had perfect grey balance and additionally with a 3DLUT on the computer´s side the gamut was improved (handling of out of gamut colors).

Depending on your display device (and its default settings), color calibration can change really a lot or nearly nothing.

Calibration can be very interesting - if it´s not a matter suitable to your personality it can mean opening Pandora´s box

[lazostat]

Do i have to make different settings if sometimes i see movies on pc monitor and some other times i see on my TV? I watch only 1080p content. 720p only if there are some old animes.

[mclingo]

both custom res broken again for me today, going to buy back my old RX580 as a final test to ensure its defo this card thats causing the problems with timings, once i know for sure i'll decide whether i can live with them and get the better gaming/tone mapping performance or sell the RX5700 and prefer stability.

would have been nice to have some input from MADSHI on this but thats not going to happen sadly

[el Filou]

Originally Posted by failax

Is it possible to create a table of peak luminance of every frame before, instead of processing in real time, so less powerful video card could read it?

That's exactly what the first "HDR test builds" were doing, there is a madMeasureHDR.exe that can analyse a video and create a .measurements file that is then used during playback (there's also a 3rd-party tool to further optimise those measurement files, but that's off-topic).
However the live HDR processing was optimized so well in recent builds that there isn't much difference anymore. I've compared build 113 with live measure with build 86 with measurement file and quality was better with the newer build and the performance difference was only a few ms, nothing that would make me want to go back.
You can google for "madVRhdrMeasure86.zip" if you want to try. The newer builds don't work correctly with measurement files anymore (you get a black screen) so you can't use them or directly compare with a recent build.

[huhn]

what do you expect him to say?

[mclingo]

something like this maybe....

Hi, Madshi here, sorry i've been away for so long, here is build v1.0 it fixes all current bugs logged and has support for all recent GPU's

[failax]

Originally Posted by el Filou

You can google for "madVRhdrMeasure86.zip" if you want to try. The newer builds don't work correctly with measurement files anymore (you get a black screen) so you can't use them or directly compare with a recent build.

I have to try it because i have an Intel Nuc8I3Beh that can't do tone mapping in real time without losing frames.

[huhn]

realtime measuring it not the major performance penalty anyway.
so don't expect wonders from this.

@mclingo
why would you even think madVR is the reason for your issue.
or that the GPU isn't support. why would you even think he has to do anything to support a new gpu. if that would be the case the gaming world would need a lot of patches.