Questions about train model

1. Suppose there's a picture with size (1200,800) and objectA is in (x,y,w,h)=(300,300,200,100), do I have to change the ratio to (416,416) or just input (300,300,200,100)?

2. whether the output of (x,y,w,z,....) is in (416,416) or the original size (1200,800) ?

thanks