The cheap Test Pattern Generators accuracy thread - Page 20 - AVS Forum | Home Theater Discussions And Reviews
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post #571 of 593 Old 03-30-2020, 05:36 AM
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Originally Posted by mombasa123 View Post
Correct. Have to use a bit accurate source regardless of whether its RGB or YCbCr. Ted's patterns are bit accurate for YCbCr sources like BluRay players. I use them through my LG BluRay and from my Odroid N2 running Kodi and my Oppo based M9702 streamer using Ted's digital files. Same goes for Ryan's patterns for HDR. All sources are bit perfect in YCbCr,
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Correct.

I plan on buying an ODROID N2 COREELEC after we get over the current situation the world is living. Zidoo clips above 235. Did you ever check if ODROID N2 shows Above White? I don't like the idea of my player clipping information.
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post #572 of 593 Old 03-30-2020, 06:12 AM
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Originally Posted by Alec246 View Post
I plan on buying an ODROID N2 COREELEC after we get over the current situation the world is living. Zidoo clips above 235. Did you ever check if ODROID N2 shows Above White? I don't like the idea of my player clipping information.
Yes it does. In fact, the Odroid N2/CoreElec is as good as my Oppo. Better in some ways as it uses the latest Amlogic chip which has better Chroma upscaling algorithm than the Oppo's Mediatek chip (Bi-linear vs Nearest Neighbour). Otherwise they are identical.

I use Spears & Munsil UHD Benchmark disk for evaluation.

PS next update will fix HDR10+ issue.
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post #573 of 593 Old 03-30-2020, 06:41 AM - Thread Starter
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Egreat players don’t clip above 235.

T.U.C. Master | TVs: Pioneer PDP-LX5090H, LG OLED55C8PLA | AV Receiver: Pioneer VSX-921 | BD Player: Panasonic DMP-BDT260EG | External LUT box: Entertainment Experience eeColor | Softwares: Light Illusion Lightspace HTP, CM Enthusiast, HCFR, DisplayCAL | Probes: Klein K10-A, Jeti spectraval 1501, X-Rite i1 Display Pro OEM Rev. B-02 | Test Pattern Generator: Riccardo Biasiotto’s PGenerator (RPi)
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post #574 of 593 Old 05-09-2020, 12:11 PM
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After trying to sort through 58 pages I have a question. What about using the mobileforge app on my iPhone 11 using air play that is built into the Samsung Q80R. Since there is no “external player” being used would this be accurate? Or has anyone tested this? Please excuse me if this has been mentioned already.
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post #575 of 593 Old 05-09-2020, 01:36 PM - Thread Starter
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The answer to your question is written in the first post, if my memory is not failing on me
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T.U.C. Master | TVs: Pioneer PDP-LX5090H, LG OLED55C8PLA | AV Receiver: Pioneer VSX-921 | BD Player: Panasonic DMP-BDT260EG | External LUT box: Entertainment Experience eeColor | Softwares: Light Illusion Lightspace HTP, CM Enthusiast, HCFR, DisplayCAL | Probes: Klein K10-A, Jeti spectraval 1501, X-Rite i1 Display Pro OEM Rev. B-02 | Test Pattern Generator: Riccardo Biasiotto’s PGenerator (RPi)
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post #576 of 593 Old 05-19-2020, 02:03 PM
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So is the DVDO AVLab TPG still a good option in 2020. Seems like it’s a legacy device on there website. Looks like you can still buy it from B&H. I really don’t want to purchase a i1 pro to profile my i1d3 if I don’t have a correct pattern to calibrate with.
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post #577 of 593 Old 05-19-2020, 02:32 PM - Thread Starter
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It depends on what displays you want to calibrate, but RPi PGenerator or LS connect through a bit accurate device might be the best and cheapest choice.
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post #578 of 593 Old 05-20-2020, 09:04 AM
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Alright so I ordered a RPi 3 B+ is there any thread about how to use it beyond putting the free software on it? This is compatible with calman? Maybe source: spectracal then Ethernet and put the IP address in?
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post #579 of 593 Old 05-25-2020, 06:46 AM
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I'm wondering if the ATV4 4K still gives the wrong colors if you enable the Chroma 4:4:4 from it?
They have added a function with Chroma to the ATV4 4K now.

@Anger.miki

Edit:
I did read this in the first post: So, we can use Apple TV Full HD as TPG only with RGB output
So then I'll change the output to RGB instead of YCC?

Edit:
Should I have the box Expand Video To PC Levels unchecked or checked? I guess I should uncheck it?

Last edited by rstolpe; 05-25-2020 at 06:56 AM.
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post #580 of 593 Old 05-25-2020, 07:16 AM - Thread Starter
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Usually, if the TPG displays 16-235 patterns, then the calibration software should be set to 0-255 (hence no expand video to pc levels). But you can easily test: if your black level is elevated by checking it, then leave it unchecked.

T.U.C. Master | TVs: Pioneer PDP-LX5090H, LG OLED55C8PLA | AV Receiver: Pioneer VSX-921 | BD Player: Panasonic DMP-BDT260EG | External LUT box: Entertainment Experience eeColor | Softwares: Light Illusion Lightspace HTP, CM Enthusiast, HCFR, DisplayCAL | Probes: Klein K10-A, Jeti spectraval 1501, X-Rite i1 Display Pro OEM Rev. B-02 | Test Pattern Generator: Riccardo Biasiotto’s PGenerator (RPi)
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post #581 of 593 Old 05-25-2020, 08:28 AM
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Quote:
Originally Posted by Anger.miki View Post
Usually, if the TPG displays 16-235 patterns, then the calibration software should be set to 0-255 (hence no expand video to pc levels). But you can easily test: if your black level is elevated by checking it, then leave it unchecked. [IMG class=inlineimg]/forum/images/smilies/wink.gif[/IMG]
Thanks, so I can calibrate with the 4K in RGB mode?

Have you looked at Chroma settings?
Maybe have apple fixed the issue now when you can have YCC with chroma at 4:4:4?

If you have the time, please take a look at it so we know if it’s correct or not 🙂
Or if we still should go with the full RGB setting with the mobile forge
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post #582 of 593 Old 05-25-2020, 01:39 PM - Thread Starter
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Last time I analyze ATV 4K YCC output it wasn't bit accurate and as I sold my DVDO AvLab TPG, I can't analyze it anymore, but I doubt it's something software related.
Use LS connect Apple TV native app instead of MobileForge.
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post #583 of 593 Old 05-26-2020, 01:19 AM
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Originally Posted by Anger.miki View Post
Last time I analyze ATV 4K YCC output it wasn't bit accurate and as I sold my DVDO AvLab TPG, I can't analyze it anymore, but I doubt it's something software related.
Use LS connect Apple TV native app instead of MobileForge.
But you did write before That full RGB was bit accurate so that’s was way I was thinking that it was software issue.
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post #584 of 593 Old 05-26-2020, 03:02 AM
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Let's see now, I have the UM7100 LG 2019 TV and I have the AppleTV 4 4K.
I have set the ATV for SDR 4K 60Hz and YCC 4:4:4

Now, can I stream the Ted disc to Infuse and calibrate it with CalMan? What I did not understand when I was reading the hole thread was if it was only the MobileForge that was wrong or if it also was if you was streaming Teds disc?
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post #585 of 593 Old 05-28-2020, 05:57 AM
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Got the rpi pgenerator setup and working. I did notice my tv is seeing 60p and not 24p. Is there a setting that can be changed in the device control or does it matter?
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post #586 of 593 Old 05-28-2020, 12:58 PM - Thread Starter
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Originally Posted by rstolpe View Post
Let's see now, I have the UM7100 LG 2019 TV and I have the AppleTV 4 4K.
I have set the ATV for SDR 4K 60Hz and YCC 4:4:4

Now, can I stream the Ted disc to Infuse and calibrate it with CalMan? What I did not understand when I was reading the hole thread was if it was only the MobileForge that was wrong or if it also was if you was streaming Teds disc?
You might want to read again the first page. Apple TV 4K is not bit perfect. I recommend you to use another TPG solution. BUT if that's the only TPG you have, then Ted's patterns have to be displayed in 1080p/24.

T.U.C. Master | TVs: Pioneer PDP-LX5090H, LG OLED55C8PLA | AV Receiver: Pioneer VSX-921 | BD Player: Panasonic DMP-BDT260EG | External LUT box: Entertainment Experience eeColor | Softwares: Light Illusion Lightspace HTP, CM Enthusiast, HCFR, DisplayCAL | Probes: Klein K10-A, Jeti spectraval 1501, X-Rite i1 Display Pro OEM Rev. B-02 | Test Pattern Generator: Riccardo Biasiotto’s PGenerator (RPi)
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post #587 of 593 Old 05-28-2020, 01:29 PM
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Something for PGenerator users. I had a yellow lightning bolt shown in the upper right corner of my patterns. Ted told me that it was an indication from my Raspberry Pi that the power supply was not providing enough power. I had connected my PGenerator to my laptop USB port for my convenience, but the port had enough power to operate the PGenerator, but too little to eliminate the lightning bolt in the corner.

I went back to using the power supply supplied with my Pi kit, no more lightning.

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post #588 of 593 Old 05-28-2020, 01:45 PM
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Quote:
Originally Posted by Anger.miki View Post
Quote:
Originally Posted by rstolpe View Post
Let's see now, I have the UM7100 LG 2019 TV and I have the AppleTV 4 4K.
I have set the ATV for SDR 4K 60Hz and YCC 4:4:4

Now, can I stream the Ted disc to Infuse and calibrate it with CalMan? What I did not understand when I was reading the hole thread was if it was only the MobileForge that was wrong or if it also was if you was streaming Teds disc?
You might want to read again the first page. Apple TV 4K is not bit perfect. I recommend you to use another TPG solution. BUT if that's the only TPG you have, then Ted's patterns have to be displayed in 1080p/24.
Ok, I understand and as the Apple TV is the only tpg I have then I’ll use Ted’s disc and change the resolution for the AppleTV to 1080p and automatically refresh rate as then it’ll use the same as the source and I guess that Ted’s is 24hz

Why’s Ted’s disk better en mobile forge?
I don’t understand that, I maybe are stupid or something I don’t know.
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post #589 of 593 Old 05-29-2020, 12:14 PM - Thread Starter
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No lol You're not stupid, those are concepts that you learn when you go deeper into calibration. I'll try to make it simple: a TPG displays a color by mixing red, green and blue, that mix is called RGB triplet (stimulus). Let's say I want to display a red(ish) color which RGB triplet is 255, 128, 128 (this is red 100% luminance, 50% saturation), if the TPG I'm using has a bit perfect output a signal analyzer will "read" R 255, G 128, B 128; if it's not it will "read" 254, 127, 127 for example. That means that you will not measure the stimulus (RGB triplet) the software is asking for and that will introduce error. How big is that error depends on how inaccurate is the TPG output. Ted's patterns are bit accurate so if you use them with a Bluray player, you will have bit accurate patterns. If you want to use Apple TV 4k, use it with LS connect (it works with CalMAN also) with RGB High video output setting.
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post #590 of 593 Old 05-31-2020, 04:37 AM
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Originally Posted by Anger.miki View Post
No lol You're not stupid, those are concepts that you learn when you go deeper into calibration. I'll try to make it simple: a TPG displays a color by mixing red, green and blue, that mix is called RGB triplet (stimulus). Let's say I want to display a red(ish) color which RGB triplet is 255, 128, 128 (this is red 100% luminance, 50% saturation), if the TPG I'm using has a bit perfect output a signal analyzer will "read" R 255, G 128, B 128; if it's not it will "read" 254, 127, 127 for example. That means that you will not measure the stimulus (RGB triplet) the software is asking for and that will introduce error. How big is that error depends on how inaccurate is the TPG output. Ted's patterns are bit accurate so if you use them with a Bluray player, you will have bit accurate patterns. If you want to use Apple TV 4k, use it with LS connect (it works with CalMAN also) with RGB High video output setting.
Do you know @Anger.miki if MobileForge are bit-perfect if you Airplay it to the LG TV directly?
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post #591 of 593 Old 05-31-2020, 07:45 AM - Thread Starter
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That is impossible to know, but when I tested MobileForge with Apple TV 3rd gen (which has bit perfect output) it was still NOT bit perfect. What LG TV have you got? I"m sorry if you already said that, I can't remember.

Last edited by Anger.miki; 05-31-2020 at 07:51 AM.
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post #592 of 593 Old 05-31-2020, 09:38 AM
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that is impossible to know, but when i tested mobileforge with apple tv 3rd gen (which has bit perfect output) it was still not bit perfect. What lg tv have you got? I"m sorry if you already said that, i can't remember.
lg 65um7100
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post #593 of 593 Old 05-31-2020, 09:22 PM - Thread Starter
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If MobileForge and Apple TV 4k is all you have, then use it with ATV4K RGB high output.
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