color space difference between videoinput/webcam or getsnapshot/snapshot

i have been using vid = videoinput('winvideo', device_number, 'YUY2_324x240') and getsnapshot(vid); for years to get video from a monochrome 14 bit image encoded as YuY2, it gets a little processing done to the 3 arrays returned by getsnapshot in order to recover the 16 bit monochrome image.

i wanted to start using newer webcam and snapshot function, but the the arrays returned are arranged very differently so the same processing does not work, do we know the returned colorspace for snapshot and getsnapshot and is there a way to transform 1 to the other.

Thanks in advance