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

[Andy Furniss]

thljcl wrote:
> When it comes to quality preservation, video editing, or lossless encoding;
> yes, I would agree that “yuv444p” makes plenty of sense. “yuv444p” is a way
> of re-encoding the entire 24-bit RGB information, which all color
> information is preserved without any loss due to chroma subsampling.

Well the subsampling is self evident, but I don't think 8 bit yuv can 
represent all of rgb (though not all of rgb is perceptible anyway).

http://www.poynton.com/PDFs/Merging_RGB_and_422.pdf