Cannot Calibrate - The error is too high #1298

wcolling · 2025-10-05T16:40:05Z

wcolling
Oct 5, 2025

I have a new installation of HyperHDR. When I attempt to run the calibration, I get the following message:

[CALIBRATOR] The calibration failed. The error is too high.

I have tried changing various options in the settings, but I always receive this same message. Looking at the code, it appears that the calibration has exceeded some limit, but I do not see how the error encountered.

I have LibreElec/Kodi installed on a Raspberry Pi 5. I added the HyperHDR addon to install HyperHDR. This is connected to HyperSerialPico which is connected to the LEDs.

I use an HDMI splitter and MS2130 video capture to obtain the signal.

To run the test, I downloaded file calibration_HDR_yuv420_limited_range.mp4 and play it with Kodi. The calibration starts OK and reports that it has retrieved the various test boards and then starts calibrating the gamma values before the error is eventually issued.

The log shows:
`2025-10-05T09:10:47.021Z [AUTOTONEMAPPING] Tone mapping is currently: enabled
2025-10-05T09:10:47.021Z [COMPONENTCTRL0] HDR (global): enabled
2025-10-05T09:10:50.103Z [V4L2:USB3.0 UHD: US] The byte array loaded into LUT
2025-10-05T09:10:50.103Z [FLATBUFSERVER] Could not set LUT: current size = 0, incoming size = 50331648
2025-10-05T09:10:50.603Z [CALIBRATOR] (LutCalibrator.cpp:367) Using video grabber as a source
Waiting for first captured test board..
2025-10-05T09:10:50.635Z [CALIBRATOR] The YUV range is FULL
2025-10-05T09:10:50.635Z [CALIBRATOR] Successfully parsed image of test board no. 2. Waiting for another frame...
2025-10-05T09:10:50.668Z [CALIBRATOR] Successfully parsed image of test board no. 2. Waiting for another frame...
2025-10-05T09:10:50.701Z [CALIBRATOR] Successfully parsed image of test board no. 2. Waiting for another frame...
2025-10-05T09:10:50.735Z [CALIBRATOR] Successfully parsed final image of test board no. 2
2025-10-05T09:10:53.340Z [CALIBRATOR] Successfully parsed image of test board no. 3. Waiting for another frame...
2025-10-05T09:10:53.374Z [CALIBRATOR] Successfully parsed image of test board no. 3. Waiting for another frame...
2025-10-05T09:10:53.408Z [CALIBRATOR] Successfully parsed image of test board no. 3. Waiting for another frame...
2025-10-05T09:10:53.442Z [CALIBRATOR] Successfully parsed final image of test board no. 3
2025-10-05T09:10:56.352Z [CALIBRATOR] Successfully parsed image of test board no. 4. Waiting for another frame...
2025-10-05T09:10:56.385Z [CALIBRATOR] Successfully parsed image of test board no. 4. Waiting for another frame...
2025-10-05T09:10:56.418Z [CALIBRATOR] Successfully parsed image of test board no. 4. Waiting for another frame...
2025-10-05T09:10:56.452Z [CALIBRATOR] Successfully parsed final image of test board no. 4
2025-10-05T09:10:59.358Z [CALIBRATOR] Successfully parsed image of test board no. 5. Waiting for another frame...
2025-10-05T09:10:59.391Z [CALIBRATOR] Successfully parsed image of test board no. 5. Waiting for another frame...
2025-10-05T09:10:59.424Z [CALIBRATOR] Successfully parsed image of test board no. 5. Waiting for another frame...
2025-10-05T09:10:59.458Z [CALIBRATOR] Successfully parsed final image of test board no. 5
2025-10-05T09:11:02.336Z [CALIBRATOR] Successfully parsed image of test board no. 6. Waiting for another frame...
2025-10-05T09:11:02.369Z [CALIBRATOR] Successfully parsed image of test board no. 6. Waiting for another frame...
2025-10-05T09:11:02.404Z [CALIBRATOR] Successfully parsed image of test board no. 6. Waiting for another frame...
2025-10-05T09:11:02.438Z [CALIBRATOR] Successfully parsed final image of test board no. 6
2025-10-05T09:11:05.338Z [CALIBRATOR] Successfully parsed image of test board no. 7. Waiting for another frame...
2025-10-05T09:11:05.371Z [CALIBRATOR] Successfully parsed image of test board no. 7. Waiting for another frame...
2025-10-05T09:11:05.404Z [CALIBRATOR] Successfully parsed image of test board no. 7. Waiting for another frame...
2025-10-05T09:11:05.438Z [CALIBRATOR] Successfully parsed final image of test board no. 7
2025-10-05T09:11:08.347Z [CALIBRATOR] Successfully parsed image of test board no. 0. Waiting for another frame...
2025-10-05T09:11:08.380Z [CALIBRATOR] Successfully parsed image of test board no. 0. Waiting for another frame...
2025-10-05T09:11:08.414Z [CALIBRATOR] Successfully parsed image of test board no. 0. Waiting for another frame...
2025-10-05T09:11:08.448Z [CALIBRATOR] Successfully parsed final image of test board no. 0
2025-10-05T09:11:11.357Z [CALIBRATOR] Successfully parsed image of test board no. 1. Waiting for another frame...
2025-10-05T09:11:11.390Z [CALIBRATOR] Successfully parsed image of test board no. 1. Waiting for another frame...
2025-10-05T09:11:11.422Z [CALIBRATOR] Successfully parsed image of test board no. 1. Waiting for another frame...
2025-10-05T09:11:11.455Z [CALIBRATOR] Successfully parsed final image of test board no. 1
2025-10-05T09:11:11.456Z [CALIBRATOR] All boards are captured. Starting calibration...
2025-10-05T09:11:11.657Z [HYPER_MANAGER] Global request to pause USB grabber

Captured colors:
White: [255 255 255] => [ 14 14 14] (YUV: [ 14 128 128])
Red: [255 0 0] => [ 35 0 0] (YUV: [ 0 108 150])
Green: [ 0 255 0] => [ 0 7 0] (YUV: [ 0 107 121])
Blue: [ 0 0 255] => [ 3 0 67] (YUV: [ 0 164 130])
UpperRed: [192 0 0] => [ 31 0 0] (YUV: [ 0 109 148])
UpperGreen: [ 0 192 0] => [ 0 7 0] (YUV: [ 0 108 121])
UpperBlue: [ 0 0 192] => [ 2 0 61] (YUV: [ 0 161 129])
MiddleRed: [128 0 0] => [ 28 0 0] (YUV: [ 0 112 146])
MiddleGreen: [ 0 128 0] => [ 0 6 0] (YUV: [ 0 111 121])
MiddleBlue: [ 0 0 128] => [ 0 0 54] (YUV: [ 0 157 128])
LowRed: [ 64 0 0] => [ 22 0 0] (YUV: [ 0 116 142])
LowGreen: [ 0 64 0] => [ 0 5 0] (YUV: [ 0 114 122])
LowBlue: [ 0 0 64] => [ 0 0 41] (YUV: [ 0 150 128])
Yellow: [255 255 0] => [ 11 12 0] (YUV: [ 8 104 130])

 Magenta: [255   0 255] => [ 24   0  30] (YUV: [  0 144 143]) 
    Cyan: [  0 255 255] => [  0  11  12] (YUV: [  6 131 117]) 
  Orange: [255 128   0] => [ 17   0   0] (YUV: [  0 104 139]) 
LimeBlue: [  0 255 128] => [  0   7   0] (YUV: [  1 119 119]) 
    Pink: [255   0 128] => [ 28   0   2] (YUV: [  0 129 146]) 
 LimeRed: [128 255   0] => [  0   8   0] (YUV: [  2 106 124]) 
   Azure: [  0 128 255] => [  0   1  32] (YUV: [  0 145 119]) 
  Violet: [128   0 255] => [ 16   0  50] (YUV: [  0 155 138]) 
 WHITE_0: [  0   0   0] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_1: [ 16  16  16] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_2: [ 32  32  32] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_3: [ 48  48  48] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_4: [ 64  64  64] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_5: [ 80  80  80] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_6: [ 96  96  96] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_7: [112 112 112] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_8: [128 128 128] => [  0   0   0] (YUV: [  0 128 128]) 
 WHITE_9: [144 144 144] => [  0   0   0] (YUV: [  0 128 128]) 
WHITE_10: [160 160 160] => [  0   0   0] (YUV: [  0 128 128]) 
WHITE_11: [176 176 176] => [  0   0   0] (YUV: [  0 128 128]) 
WHITE_12: [192 192 192] => [  0   0   0] (YUV: [  0 128 128]) 
WHITE_13: [208 208 208] => [  4   4   4] (YUV: [  4 128 128]) 
WHITE_14: [224 224 224] => [  8   8   8] (YUV: [  8 128 128]) 
WHITE_15: [240 240 240] => [ 11  11  11] (YUV: [ 11 128 128]) 
WHITE_16: [255 255 255] => [ 14  14  14] (YUV: [ 14 128 128])

2025-10-05T09:11:11.659Z [CALIBRATOR] The first phase starts
2025-10-05T09:11:11.659Z [CALIBRATOR] Optimal thread count: 4
2025-10-05T09:11:11.659Z [CALIBRATOR] Number of test vertexes: 982
2025-10-05T09:11:16.496Z [PERFORMANCE] [USB: FPS = 29.88, decoding = 4ms, frames = 1793, invalid = 0, mode = direct], [LED0: FPS = 30.30, send = 1818, processed = 1818, dropped = 0]
2025-10-05T09:11:16.505Z [PERFORMANCE] [USB: FPS = 29.88, decoding = 4ms, frames = 1793, invalid = 0, mode = direct], [INSTANCE0: FPS = 29.88, processed = 1793], [LED0: FPS = 30.30, send = 1818, processed = 1818, dropped = 0]
2025-10-05T09:11:35.804Z [CALIBRATOR] The calibration failed. The error is too high.

Calibrated:
White: [255 255 255] => [corrected]
Red: [255 0 0] => [corrected]
Green: [ 0 255 0] => [corrected]
Blue: [ 0 0 255] => [corrected]
UpperRed: [192 0 0] => [corrected]
UpperGreen: [ 0 192 0] => [corrected]
UpperBlue: [ 0 0 192] => [corrected]
MiddleRed: [128 0 0] => [corrected]
MiddleGreen: [ 0 128 0] => [corrected]
MiddleBlue: [ 0 0 128] => [corrected]
LowRed: [ 64 0 0] => [corrected]
LowGreen: [ 0 64 0] => [corrected]
LowBlue: [ 0 0 64] => [corrected]
Yellow: [255 255 0] => [corrected]
Magenta: [255 0 255] => [corrected]
Cyan: [ 0 255 255] => [corrected]
Orange: [255 128 0] => [corrected]
LimeBlue: [ 0 255 128] => [corrected]
Pink: [255 0 128] => [corrected]
LimeRed: [128 255 0] => [corrected]
Azure: [ 0 128 255] => [corrected]
Violet: [128 0 255] => [corrected]
WHITE_0: [ 0 0 0] => [corrected]
WHITE_1: [ 16 16 16] => [corrected]
WHITE_2: [ 32 32 32] => [corrected]
WHITE_3: [ 48 48 48] => [corrected]
WHITE_4: [ 64 64 64] => [corrected]
WHITE_5: [ 80 80 80] => [corrected]
WHITE_6: [ 96 96 96] => [corrected]
WHITE_7: [112 112 112] => [corrected]
WHITE_8: [128 128 128] => [corrected]
WHITE_9: [144 144 144] => [corrected]
WHITE_10: [160 160 160] => [corrected]
WHITE_11: [176 176 176] => [corrected]
WHITE_12: [192 192 192] => [corrected]
WHITE_13: [208 208 208] => [corrected]
WHITE_14: [224 224 224] => [corrected]
WHITE_15: [240 240 240] => [corrected]
WHITE_16: [255 255 255] => [corrected]

`
Does anyone have any idea as to what is the problem?

Answered by wcolling

Oct 5, 2025

I finally found the video preview at the top of the left side menu and was able to track the problem to an invalid setting for Video capturing->USB Capture->Hardware Brightness control. I changed this to 0 and was able to complete the calibration successfully.

Thank you for your help.

View full answer

awawa-dev · 2025-10-05T16:50:50Z

awawa-dev
Oct 5, 2025
Maintainer

Hi
As you can see captured colors by your grabber are nearly black (and definitely you should see in the video preview window that somethings is wrong!) - somethings is wrong with your setup or it's famous ms2130 firmware issue. Such nearly zero values cannot be miraculous fixed by the calibration process.

Captured colors:
White: [255 255 255] => [ 14 14 14] (YUV: [ 14 128 128])
Red: [255 0 0] => [ 35 0 0] (YUV: [ 0 108 150])
Green: [ 0 255 0] => [ 0 7 0] (YUV: [ 0 107 121])
Blue: [ 0 0 255] => [ 3 0 67] (YUV: [ 0 164 130])
UpperRed: [192 0 0] => [ 31 0 0] (YUV: [ 0 109 148])
UpperGreen: [ 0 192 0] => [ 0 7 0] (YUV: [ 0 108 121])
UpperBlue: [ 0 0 192] => [ 2 0 61] (YUV: [ 0 161 129])
MiddleRed: [128 0 0] => [ 28 0 0] (YUV: [ 0 112 146])
MiddleGreen: [ 0 128 0] => [ 0 6 0] (YUV: [ 0 111 121])
MiddleBlue: [ 0 0 128] => [ 0 0 54] (YUV: [ 0 157 128])
LowRed: [ 64 0 0] => [ 22 0 0] (YUV: [ 0 116 142])
LowGreen: [ 0 64 0] => [ 0 5 0] (YUV: [ 0 114 122])
LowBlue: [ 0 0 64] => [ 0 0 41] (YUV: [ 0 150 128])
Yellow: [255 255 0] => [ 11 12 0] (YUV: [ 8 104 130])

 Magenta: [255   0 255] => [ 24   0  30] (YUV: [  0

0 replies

wcolling · 2025-10-05T18:27:59Z

wcolling
Oct 5, 2025
Author

Can you give me a clue as to what I should check?

When I turn on the LEDs, they look ok to me except that it the colors are a bit too red. The brightness seems just fine.

As for the MS2130, I flashed it with the hyperhdr_f3 firmware. Is there a problem with this firmware? Should I flash it back to the original firmware?

Finally, what is this preview window? I have seen mention of it in some posts, but I have not found a way to activate it. Is it somewhere in the browser interface? As you mentioned, if I could see that and get instant feedback when setting options it might help me figure out what is wrong.

I forgot to mention that I am running version 21.0.0.0

0 replies

awawa-dev · 2025-10-05T18:44:32Z

awawa-dev
Oct 5, 2025
Maintainer

The HyperHDR video preview window is always available with a button to enable video stream. Check the wiki.
Sometimes a firmware update isn't enough – it's possible that the HDMI handshake issue persists with some HDMI splitters.
You should pay attention to what you see in the preview window: not the LEDs. The calibration data simply looks very bad and can't be fixed. Sometimes the video player/its processing can cause issues.

0 replies

wcolling · 2025-10-05T19:21:39Z

wcolling
Oct 5, 2025
Author

I finally found the video preview at the top of the left side menu and was able to track the problem to an invalid setting for Video capturing->USB Capture->Hardware Brightness control. I changed this to 0 and was able to complete the calibration successfully.

Thank you for your help.

0 replies

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