Hello all.
I've been trying for some days now but can't seem to get it right. I have a few problems that I will list here
First of all, here is my setup:
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Raspberry Pi 3B+
LED: SK6812WW (warm white) - connected via L corners
Power Supplies: Official RP3 for the raspberry AND a 5V 20amp for the LEDs
Video Capture Card 4K
HDMI Switcher
Google TV, Cable box etc.
HyperHDR software
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So my wiring is:
PS: I used 2 different power supplies, because I was getting a warning of low voltage to RP3 when using the same one I used for the LEDs (even though I measured on the barrell jack connector and it was showing 5.16V
1. LEDs connected to their own PSU and RP3 connected to its own PSU (as explained above)
2. Data Jumper Cable from LED to GPIO12 on RP3 and a ground wire connected to RP GPIO ground.
3. USB Capture Card connected to RP3 and HDMI OUT to TV
4. HDMI Switcher connected to USB Video Capture Card on HDMI Input
5. Video source connected to HDMI Switcher
6. HyperHDR LED Hardware confioguration set to PWM ws281x
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So, with this configuration, I'm able to get lights to turn on and they even display different colors, albeit different then what is being shown on the TV (display white when it's pink, green when yellow or whatever...)
I tried already all the RGB, GBR, GRB stuff... none of them worked. Some would make all the lights turn white, some would display colors but wrong.
I tried, for example, a completely red background video, and on one configuration of RGB pattern it was showing a pinkish hue on 3 sides of my LED strip, but the bottom row of the LED strip was green (even though, like I said, the whole picture was red).
Strange thing is that when using the wizard it displays, on all sides, the perfect colors (red is very red and green is very green) on the LED strip as a whole.
Could it be that the USB grabber is the problem?
Anyway, I also tried to connect the data cable to the GPIO10 on RP3 and set it to SK6812spi on the controller type, on LED Hardware, but got no lights to turn on. I did not change anything on /dev/spidev0.0 nor on baudrate.
Sorry for long post, but I'm out of ideas and I'm a newbie.
I don't know if it's a hardware problem or a software issue, but I'm guessing it's a hardware problem. This thing with the wizard showing perfect colors but when viewing a video it shows all wrong is strange.
I appreciate the help! 
