The plane's samples, stride * height bytes long.
Plane height in samples. Half the frame height for the U and V planes.
Bytes per row, at least width and possibly padded for alignment.
Plane width in samples. Half the frame width for the U and V planes.
A single plane (Y, U, or V) of a decoded I420 video frame.
strideis the byte width of each row, which may exceedwidth.