Function software_fullcolor 

pub fn software_fullcolor(codec: Codec) -> bool

Whether the software encoder of a codec carries a 4:4:4 (video_fullcolor) request: x264 (High 4:4:4, full range), x265, and libvpx’s VP9 (profile 1) do; OpenH264, kvazaar, VP8, and SVT-AV1 encode such a request 4:2:0.