Originally Posted by rafparedis
I've now created a small video with the flicker I've experience. Quality isn't so good and frame rate isn't high enough to accurately capture it but it's visible (webcam)
Well this is interesting... The still pictures look as if red is gone, but I think that's not really the case since the shirt turns yellow, which can be composed of red & green. Is blue gone or not?
Looking at the video I saw one flash around 8s where you clearly don't loose any of the colors completely, but the color balance goes momentarily cold.
Next I tried to repeat the colors of the shirt in the still pictures. I took the quick & brutal method: I created a powerpoint drawing object ==> format autoshape ==> fill ==> more fill colors ==> custom
... which gives a colormap with HSL or RGB values and let's you move around with mouse. I tried to repeat those light blue and yellowish shirt colours. HSL colorspace didn't give any hints but RGB did. See e.g. RGB = 218 245 245 vs RGB = 245 245 218 ==>
you get yellowish and bluish colors. Could it be that the projector internally mixes (rearranges) RGB color values?
That would explain the change in color balance without loosing any of the colors completely.
Sorry about the poor values in the example, but I hope you get the idea. Someone with better eye and more time could try to find more exact RGB ratios.
Earlier you wrote that you can't specify YCbCr 4:4:4 format for HDMI. Taking one step backwards: do you know if your equipment is using RGB or YCbCr over HDMI?