/usr/lib/pd/extra/pdp/rgb2ycrcb.pd is in pd-pdp 1:0.14.1-3+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | #N canvas 318 162 450 300 10;
#X obj 94 76 inlet;
#X obj 144 76 inlet;
#X obj 195 76 inlet;
#X text 94 53 red;
#X text 143 52 green;
#X text 197 53 blue;
|