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Old 23rd June 2018, 08:47   #51481  |  Link
mkohman
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Guys apologies in advance if this is going to ruffle some feathers or if this topic has been discussed before....

My current setup is as below :

HTPC >JVC

My HTPC is set to RGB FULL 444
madVR set to 0-256 10bit
JVC projector set to Enhanced / RGB

LAV filters also set to 0-256

My JVC info panel displays RGB when a movie is being played, however everyone else's seems to be showing YUV???

I have Googled JVC YUV OR RGB and in the images section of Google they all seem to display 12bit colour and YUV where as mine displays 12bit RGB...

I use KODI DSPLAYER with LAV filters which are also set to 0-256.. Basically everything in the chain is set to RGB FULL 4.4.4...

Can someone please tell me if this is correct and if so why does everyone else's displays information tab show the colour space as YUV?

Thanks

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Last edited by mkohman; 23rd June 2018 at 12:37.
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Old 23rd June 2018, 12:23   #51482  |  Link
huhn
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because you are sending RGB.

changing the settings in lavfilter to RGB is a very very dumb idea leave it at default.
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Old 23rd June 2018, 12:33   #51483  |  Link
mkohman
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Quote:
Originally Posted by huhn View Post
because you are sending RGB.

changing the settings in lavfilter to RGB is a very very dumb idea leave it at default.
Thanks but, I think it was at 0-256 by default in lav filter.. shall I change that to 16-235? Also shall I change madvr to 16-235? and keep my HTPC at RGB FULL 4.4.4 and JVC input level Enhanced? Thanks

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Old 23rd June 2018, 12:54   #51484  |  Link
huhn
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Quote:
Thanks but, I think it was at 0-256 by default in lav filter.
the point is not this setting alone it doesn't do anything with madVR but with a combination of other settings. but for what ever reason you like to change everything that is fine by default and correct by default.

Quote:
Also shall I change madvr to 16-235? and keep my HTPC at RGB FULL 4.4.4 and JVC input level Enhanced?
sounds wrong to me.
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Old 23rd June 2018, 13:15   #51485  |  Link
mkohman
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No offence but what you have just written makes absolutely no sense.. I don't understand what you're trying to say. I am asking a very simple question and in return I got a string of sentences which made absolutely no sense to me.. Sorry..

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Old 23rd June 2018, 14:01   #51486  |  Link
littleD
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Quote:
Originally Posted by mkohman
Can someone please tell me if this is correct and if so why does everyone else's displays information tab show the colour space as YUV?
http://madshi.net/htpc/page4.html and consider Ycbcr as yuv for simplicity
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Old 23rd June 2018, 14:10   #51487  |  Link
mkohman
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Quote:
Originally Posted by littleD View Post
http://madshi.net/htpc/page4.html and consider Ycbcr as yuv for simplicity
Thanks for this. Much appreciated but still no idea which to select for madVR or lav filters? Should they be YCbCr or rgb? Thanks

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Old 23rd June 2018, 14:48   #51488  |  Link
huhn
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the YUV or RGB you see at your projector has nothing todo with madVR or lavfilter. it just tells you what the GPU is sending and RGB is fine.

use the default settings for this madVR lavfilter they are there for a reason.
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Old 23rd June 2018, 14:58   #51489  |  Link
mkohman
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Quote:
Originally Posted by huhn View Post
the YUV or RGB you see at your projector has nothing todo with madVR or lavfilter. it just tells you what the GPU is sending and RGB is fine.

use the default settings for this madVR lavfilter they are there for a reason.
Thanks

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Old 23rd June 2018, 15:16   #51490  |  Link
mkohman
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Judging by the images attached below which were both taken from the Kodi Wikipedia Website... I understand that this should be correct :

Desktop set to RGB FULL 4.4.4

madvr set to 0-256

Lav filter and JVC projector set to 16-235

I'll be happy to be corrected if I'm wrong.. Thanks for all the input..

Name:  1.jpeg
Views: 1623
Size:  29.4 KBName:  2.jpeg
Views: 1430
Size:  35.8 KB

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Old 23rd June 2018, 15:27   #51491  |  Link
huhn
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when madVR and the GPU driver are set to full range you need to set your projector to full range. i guess they use the word enhance.

lavfilter has nothing to do with this.

just read this: https://forum.doom9.org/showpost.php...16&postcount=2

attachment need admin approval no one will see them.
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Old 23rd June 2018, 15:37   #51492  |  Link
mkohman
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Quote:
Originally Posted by huhn View Post
when madVR and the GPU driver are set to full range you need to set your projector to full range. i guess they use the word enhance.

lavfilter has nothing to do with this.

just read this: https://forum.doom9.org/showpost.php...16&postcount=2

attachment need admin approval no one will see them.
Cool.. Thanks.. So I will leave everything as it is

Everything at FULL..

Cheers

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Old 23rd June 2018, 16:42   #51493  |  Link
mv
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Quote:
Originally Posted by huhn View Post
are you using d3d11 for decoding?
Same issue with D3D11 or DXVA Copy-Back. But with D3D11 decoding de-interlacing is not enabled for some reason neither in madVR or LAV so switched to DXVA Copy-Back for now.
Tried to encrease buffer size in LAV splitter but thats is not the case.
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Old 23rd June 2018, 16:52   #51494  |  Link
huhn
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d3d11 doesn't support deinterlancing that'S why i ask.
can you make a screen of the OSD?
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Old 23rd June 2018, 19:27   #51495  |  Link
Redemption80
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Nvidia users who use custom modes, i know while most people were having issues with the driver rejecting this mode, some were not.

What are other Nvidia users doing now? I pretty much stuck with 390.77 for 6 months but out of curiosity i have been testing 398.11 and again can only use the EDID timings. Saying that, while my OCD dislikes the fact i have went from drops every few days to every 12mins, if im honest i can't say i actually noticed them over the course of average TV show.

Anyone who knows anything about drivers think this is a permanent change to the drivers that we will have to just live with?

Last edited by Redemption80; 23rd June 2018 at 19:34.
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Old 23rd June 2018, 19:50   #51496  |  Link
nevcairiel
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Create modes in the NVIDIA control panel, that works on all driver versions for me.
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LAV Filters - open source ffmpeg based media splitter and decoders
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Old 23rd June 2018, 20:11   #51497  |  Link
veggav
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Found this statement:

"My main problem with a 4:2:2 transport over HDMI is that a PC is always RGB, and a 4:2:2 transport is YCbCr, so when you play something on a PC the player converts the YCbCr file to RGB, then the graphics card converts it to 4:2:2 YCbCr for HDMI, and the TV again converts it to RGB, its two extra conversions that may (and do) incur extra loss on the image, and has the potential for mis-matching conversion matrices even throwing off your colors entirely."

Is this accurate?
It's impossible to have true YCbCr on PC?
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Old 23rd June 2018, 20:24   #51498  |  Link
huhn
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not perfectly accurate but close enough.

you can't use YCbCr from source to HDMI on a PC.
the solution is simple just use RGB output.
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Old 23rd June 2018, 20:24   #51499  |  Link
nevcairiel
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Quote:
Originally Posted by veggav View Post
Is this accurate?
It's impossible to have true YCbCr on PC?
This is correct. PCs at least on any configuration that can run madVR are always RGB.
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LAV Filters - open source ffmpeg based media splitter and decoders
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Old 23rd June 2018, 20:50   #51500  |  Link
veggav
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Thanks
This clears some stuff for me to understand

If I set nvidia control panel to "let colors settings be set by application" I believe this will set color based on my TV edid.

I know about chroma subsampling test to see if it' 4:4:4 or 4:2:0.

Is there a way to know if in this situation my pc is using RGB or YCbCr?
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling

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