Display MoreJust tested with your images, everything fine here.
Watching your video rang a bell, though, I remembered having a very similar issue back then when I first tested my LED strip but was using a power supply with too low power rating. If I raised the LED brightness beyond a certain point the strip would just shut off completely. This was most easily to reproduce with white light (as this means all three R/G/B LEDs are active at the same time).
Not sure why that also happens with green and why it was OK on the RPi3, but as it's rather easy to test and would provide some interesting datapoint please give it a try:
Start up hypercon, connect to libreelec and then pick white on the color-wheel. Then change the brightness (on the vertical slider to the right) and check if the LEDs turn black at some point. Checking with other colors (yellow, green etc) may also be interesting.
so long,
Hias
Hias, Thanks for all the great assistance here!
I just set up a Rpi 4 following your instructions and I got to this point. I'm having the same issue with Green and White coming on briefly then fading out when looking at the test pictures.
I did what you said with the color wheel and was not able to replicate the problem. All the colors cam on as expected and stayed on.
Any additional thoughts would be great. Thanks.
Edit: I figured it out. It's not perfect but it is a lot better! I had to make adjustments to the grabber parameters. Increasing the Height and width to 100, and interval to 50ms. There is still a strange delay sometimes that happens when looking at the test images. For example solid Red, the sides will light up right away, then a few seconds later the top will illuminate. It's weird but doesn't seem to be an issue with moving pictures.
Thanks again for your guidance here!