not seeing XRGB option for my camera

[Senns]

i saw that the best color format in obs for my camera was XRGB but i don't have an option for it, is this a bug? i only see I420, NV12,YUY2 if XRGB is not a thing anymore which one should i use for the best quality, btw i have a canon m50 connected through el gato 4k link. any help would be appreciated

 

[Tomasz Góral]

What say manual about colors formats for canon m50?
Second what a colors format can use elgato?