Help: V4L2GRABBER INFO: Signal lost HDMI 4k Solution

Zeze21 · 18. August 2019

Hi everyone.
I have the following setup:
Multiple devices (PS4 PC Wii etc) are connected to my AVR (Denon X2400h) which then is connected to a FeinTech VSP01202 HDMI 2.0 Splitter 1x2 https://feintech.eu/ultra-hd-hdmi-splitter-mit-downscaler which connects to my TV and to a HDMI Video Capture Card which has the Fushicai USBTV007 onboard so to say.
The Raspberry is then connected to an adruino uno which is connected to the led.
The connection from the raspberry to the adruino uno works - when i start up the raspberry the led start up and i get the effect i specified.
But then nothing happens.
on the hyperion log i get:

Code

ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: Hyperion Ambilight Deamon (990)
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         Version   : V1.03.4 (brindosch-c750c41/dc6a602-1522918225
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         Build Time: Apr  5 2018 01:57:25
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: INFO: Selected configuration file: /etc/hyperion/hyperion.config.json
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: HYPERION INFO: ColorTransform 'default' => [0; 135]
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: HYPERION INFO: ColorCorrection 'default' => [0; 135]
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: HYPERION INFO: ColorAdjustment 'default' => [0; 135]
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: LEDDEVICE INFO: configuration:
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: {
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         "colorOrder" : "rgb",
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         "delayAfterConnect" : 0,
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         "name" : "MyHyperionConfig",
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         "output" : "/dev/ttyACM0",
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         "rate" : 500000,
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]:         "type" : "adalight"
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: }
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: Opening UART: /dev/ttyACM0
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: INFO: Creating linear smoothing
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: HYPERION (CS) INFO: Created linear-smoothing(interval_ms=50;settlingTime_ms=200;updateDelay=0
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: EFFECTENGINE INFO: 27 effects loaded from directory /usr/share/hyperion/effects
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: EFFECTENGINE INFO: Initializing Python interpreter
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: INFO: Hyperion started and initialised
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: INFO: Boot sequence 'Random' EFFECTENGINE INFO: run effect Random on channel 0
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: BLACKBORDER INFO: threshold set to 0 (0)
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: BLACKBORDER INFO: mode:default
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: started
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: INFO: Json server created and started on port 19444
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: INFO: Proto server created and started on port 19445
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: V4L2GRABBER INFO: width=720 height=576
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: V4L2GRABBER INFO: pixel format=YUYV
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: BLACKBORDER INFO: threshold set to 0 (0)
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: BLACKBORDER INFO: mode:default
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: V4L2GRABBER INFO: signal threshold set to: {0,0,0}
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: V4L2GRABBER INFO: started
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: INFO: V4L2 grabber created and started
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: BORDER SWITCH REQUIRED!!
ssh in:     Aug 18 19:46:39 raspberrypi hyperiond[990]: CURRENT BORDER TYPE: unknown=0 hor.size=0 vert.size=0
ssh in:     Aug 18 19:46:40 raspberrypi hyperiond[990]: V4L2GRABBER INFO: stopped
ssh in:     Aug 18 19:47:09 raspberrypi hyperiond[990]: EFFECTENGINE INFO: effect finished
ssh in:     Aug 18 19:47:10 raspberrypi hyperiond[990]: V4L2GRABBER INFO: started
ssh in:     Aug 18 19:47:13 raspberrypi hyperiond[990]: V4L2GRABBER INFO: Signal lost
ssh in:     Aug 18 19:47:33 raspberrypi hyperiond[990]: INFO: Application closed with code 0
ssh in:     Aug 18 19:47:33 raspberrypi hyperiond[990]: V4L2GRABBER INFO: stopped
ssh in:     Aug 18 19:47:33 raspberrypi systemd[1]: Stopping Hyperion Systemd service...
ssh in:     Aug 18 19:47:33 raspberrypi hyperiond[990]: EFFECTENGINE INFO: Cleaning up Python interpreter
ssh in:     Aug 18 19:47:33 raspberrypi systemd[1]: hyperion.service: Succeeded.
ssh in:     Aug 18 19:47:33 raspberrypi systemd[1]: Stopped Hyperion Systemd service.

Alles anzeigen

my config is:

Spoiler anzeigen

Code

// Automatically generated configuration file for Hyperion ambilight daemon
// Notice: All values are explained with comments at our wiki: wiki.hyperion-project.org (config area) 
// Generated by: HyperCon (The Hyperion deamon configuration file builder)
// Created with HyperCon V1.03.3 (22.10.2017)


{
    // DEVICE CONFIGURATION 
    "device" :
    {
        "name"       : "MyHyperionConfig",
        "type"       : "adalight",
        "output"     : "/dev/ttyACM0",
        "rate"     : 500000,
        "delayAfterConnect"     : 0,
        "colorOrder" : "rgb"
    },


    // COLOR CALIBRATION CONFIG
    "color" :
    {
        "channelAdjustment" :
        [
            {
                "id"   : "default",
                "leds" : "*",
                "pureRed" :
                {
                    "redChannel"        : 255,
                    "greenChannel"        : 0,
                    "blueChannel"        : 0
                },
                "pureGreen" :
                {
                    "redChannel"        : 0,
                    "greenChannel"        : 255,
                    "blueChannel"        : 0
                },
                "pureBlue" :
                {
                    "redChannel"        : 0,
                    "greenChannel"        : 0,
                    "blueChannel"        : 255
                }
            }
        ],
        "temperature" :
        [
            {
                "id"   : "default",
                "leds" : "*",
                "correctionValues" :
                {
                    "red"     : 255,
                    "green"    : 255,
                    "blue"     : 255
                }
            }
        ],
        "transform" :
        [
            {
                "id"   : "default",
                "leds" : "*",
                "hsl" :
                {
                    "saturationGain"    : 1.0000,
                    "luminanceGain"        : 1.0000,
                    "luminanceMinimum"        : 0.0000
                },
                "red" :
                {
                    "threshold"     : 0.0000,
                    "gamma"        : 2.5000
                },
                "green" :
                {
                    "threshold"     : 0.0000,
                    "gamma"        : 2.5000
                },
                "blue" :
                {
                    "threshold"     : 0.0000,
                    "gamma"        : 2.5000
                }
            }
        ],
    // SMOOTHING CONFIG
        "smoothing" :
        {
            "type"            : "linear",
            "time_ms"         : 200,
            "updateFrequency" : 20.0000,
            "updateDelay"     : 0
        }
    },


    // V4L2 GRABBER CONFIG
    "grabber-v4l2" : 
    {
        "device" : "/dev/video0",
        "input" : 0,
        "standard" : "PAL",
        "width" : -1,
        "height" : -1,
        "frameDecimation" : 2,
        "sizeDecimation" : 8,
        "priority" : 900,
        "mode" : "2D",
        "cropLeft" : 0,
        "cropRight" : 0,
        "cropTop" : 0,
        "cropBottom" : 0,
        "redSignalThreshold" : 0.0,
        "greenSignalThreshold" : 0.0,
        "blueSignalThreshold" : 0.0
    },


    // BLACKBORDER CONFIG
    "blackborderdetector" : 
    {
        "enable" : true,
        "threshold" : 0.0,
        "unknownFrameCnt" : 600,
        "borderFrameCnt" : 50,
        "maxInconsistentCnt" : 10,
        "blurRemoveCnt" : 1,
        "mode" : "default"
    },


    // BOOTEFFECT CONFIG
    "bootsequence" : 
    {
        "color" : [0,0,0],
        "effect" : "Random",
        "duration_ms" : 30000,
        "priority" : 700
    },


    // JSON SERVER CONFIG
    "jsonServer" : 
    {
        "port" : 19444
    },


    // PROTO SERVER CONFIG
    "protoServer" : 
    {
        "port" : 19445
    },


    // EFFECT PATH
    "effects" : 
    {
        "paths" : 
        [
            "/storage/hyperion/effects",
            "/usr/share/hyperion/effects"
        ]
    },


    // NO FRAME GRABBER CONFIG
    // NO KODI CHECK CONFIG
    // NO BOBLIGHT SERVER CONFIG
    // NO JSON/PROTO FORWARD CONFIG


    // LED CONFIGURATION
    "leds" : 
    [
        {
            "index" : 0,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.9600, "maximum" : 1.0000 }
        },
        {
            "index" : 1,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.9200, "maximum" : 0.9600 }
        },
        {
            "index" : 2,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.8800, "maximum" : 0.9200 }
        },
        {
            "index" : 3,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.8400, "maximum" : 0.8800 }
        },
        {
            "index" : 4,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.8000, "maximum" : 0.8400 }
        },
        {
            "index" : 5,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.7600, "maximum" : 0.8000 }
        },
        {
            "index" : 6,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.7200, "maximum" : 0.7600 }
        },
        {
            "index" : 7,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.6800, "maximum" : 0.7200 }
        },
        {
            "index" : 8,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.6400, "maximum" : 0.6800 }
        },
        {
            "index" : 9,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.6000, "maximum" : 0.6400 }
        },
        {
            "index" : 10,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.5600, "maximum" : 0.6000 }
        },
        {
            "index" : 11,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.5200, "maximum" : 0.5600 }
        },
        {
            "index" : 12,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.4800, "maximum" : 0.5200 }
        },
        {
            "index" : 13,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.4400, "maximum" : 0.4800 }
        },
        {
            "index" : 14,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.4000, "maximum" : 0.4400 }
        },
        {
            "index" : 15,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.3600, "maximum" : 0.4000 }
        },
        {
            "index" : 16,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.3200, "maximum" : 0.3600 }
        },
        {
            "index" : 17,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.2800, "maximum" : 0.3200 }
        },
        {
            "index" : 18,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.2400, "maximum" : 0.2800 }
        },
        {
            "index" : 19,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.2000, "maximum" : 0.2400 }
        },
        {
            "index" : 20,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.1600, "maximum" : 0.2000 }
        },
        {
            "index" : 21,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.1200, "maximum" : 0.1600 }
        },
        {
            "index" : 22,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.0800, "maximum" : 0.1200 }
        },
        {
            "index" : 23,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.0400, "maximum" : 0.0800 }
        },
        {
            "index" : 24,
            "hscan" : { "minimum" : 0.9500, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0400 }
        },
        {
            "index" : 25,
            "hscan" : { "minimum" : 0.9767, "maximum" : 1.0000 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 26,
            "hscan" : { "minimum" : 0.9535, "maximum" : 0.9767 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 27,
            "hscan" : { "minimum" : 0.9302, "maximum" : 0.9535 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 28,
            "hscan" : { "minimum" : 0.9070, "maximum" : 0.9302 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 29,
            "hscan" : { "minimum" : 0.8837, "maximum" : 0.9070 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 30,
            "hscan" : { "minimum" : 0.8605, "maximum" : 0.8837 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 31,
            "hscan" : { "minimum" : 0.8372, "maximum" : 0.8605 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 32,
            "hscan" : { "minimum" : 0.8140, "maximum" : 0.8372 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 33,
            "hscan" : { "minimum" : 0.7907, "maximum" : 0.8140 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 34,
            "hscan" : { "minimum" : 0.7674, "maximum" : 0.7907 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 35,
            "hscan" : { "minimum" : 0.7442, "maximum" : 0.7674 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 36,
            "hscan" : { "minimum" : 0.7209, "maximum" : 0.7442 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 37,
            "hscan" : { "minimum" : 0.6977, "maximum" : 0.7209 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 38,
            "hscan" : { "minimum" : 0.6744, "maximum" : 0.6977 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 39,
            "hscan" : { "minimum" : 0.6512, "maximum" : 0.6744 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 40,
            "hscan" : { "minimum" : 0.6279, "maximum" : 0.6512 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 41,
            "hscan" : { "minimum" : 0.6047, "maximum" : 0.6279 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 42,
            "hscan" : { "minimum" : 0.5814, "maximum" : 0.6047 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 43,
            "hscan" : { "minimum" : 0.5581, "maximum" : 0.5814 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 44,
            "hscan" : { "minimum" : 0.5349, "maximum" : 0.5581 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 45,
            "hscan" : { "minimum" : 0.5116, "maximum" : 0.5349 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 46,
            "hscan" : { "minimum" : 0.4884, "maximum" : 0.5116 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 47,
            "hscan" : { "minimum" : 0.4651, "maximum" : 0.4884 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 48,
            "hscan" : { "minimum" : 0.4419, "maximum" : 0.4651 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 49,
            "hscan" : { "minimum" : 0.4186, "maximum" : 0.4419 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 50,
            "hscan" : { "minimum" : 0.3953, "maximum" : 0.4186 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 51,
            "hscan" : { "minimum" : 0.3721, "maximum" : 0.3953 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 52,
            "hscan" : { "minimum" : 0.3488, "maximum" : 0.3721 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 53,
            "hscan" : { "minimum" : 0.3256, "maximum" : 0.3488 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 54,
            "hscan" : { "minimum" : 0.3023, "maximum" : 0.3256 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 55,
            "hscan" : { "minimum" : 0.2791, "maximum" : 0.3023 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 56,
            "hscan" : { "minimum" : 0.2558, "maximum" : 0.2791 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 57,
            "hscan" : { "minimum" : 0.2326, "maximum" : 0.2558 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 58,
            "hscan" : { "minimum" : 0.2093, "maximum" : 0.2326 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 59,
            "hscan" : { "minimum" : 0.1860, "maximum" : 0.2093 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 60,
            "hscan" : { "minimum" : 0.1628, "maximum" : 0.1860 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 61,
            "hscan" : { "minimum" : 0.1395, "maximum" : 0.1628 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 62,
            "hscan" : { "minimum" : 0.1163, "maximum" : 0.1395 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 63,
            "hscan" : { "minimum" : 0.0930, "maximum" : 0.1163 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 64,
            "hscan" : { "minimum" : 0.0698, "maximum" : 0.0930 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 65,
            "hscan" : { "minimum" : 0.0465, "maximum" : 0.0698 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 66,
            "hscan" : { "minimum" : 0.0233, "maximum" : 0.0465 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 67,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0233 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0800 }
        },
        {
            "index" : 68,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.0000, "maximum" : 0.0400 }
        },
        {
            "index" : 69,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.0400, "maximum" : 0.0800 }
        },
        {
            "index" : 70,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
            "vscan" : { "minimum" : 0.0800, "maximum" : 0.1200 }
        },
        {
            "index" : 71,
            "hscan" : { "minimum" : 0.0000, "maximum" : 0.0500 },
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    "endOfJson" : "endOfJson"
}

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when i try to take a screenshot - i can, but the screenshot is entirely black.
Can anyone spot the problem? I really appreciate any help.
Thank you guys!

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