Originally Posted by ConnecTEDDD
For that reason, if you have that device for movie playback, its better idea to set it to RGB colorspace for playback also.
So, I've compared the two methods of pattern playback using the Amazon Fire TV Stick 4K.
A) AVSHD709 media files played out at YCbCr.
B) AVSHD709 media files played out at RGB.
C) For comparison, AVSHD709 media files played out from a USB drive using the TV's own media player.
B (YCbCr) and C (TV player) give almost identical results across colour primaries and saturation sweeps, within 0.3 dE. However, A (RGB) gives significantly larger errors of over 5 dE, with Cyan giving a dE of 8.4 compared to the TV's media player.
Now, I don't know how accurate the colour reproduction is using the TVs own media player, but I would have thought Panasonic might have got that right
So, from my experience, using a Fire TV Stick 4K outputting RGB, is not advisable when using calibration videos like AVSHD709 which are YUV. Unless I've completely misunderstood!! I have no choice anyway, as the Fire TV Stick 4K can't output RGB at 2160p anyway.