[FFmpeg-user] Does converting to yuv444p by default make sense?

[Carl Lindqvist]

It's quite easy to see that no YCbCr 444 can't be one to one with RGB,
even when the full values of Y (0-255 instead of 16-235) are used.

Think of a Y value of 0. Cb and Cr can have 256x256=65536 different
combination of values, but they all represent the same black color in
RGB: 0,0,0

So there MUST be some loss of color information when converting between the two.