Model training using different image size

[kulkarnikeerti]

Hi,
I know that this repo works with a squared image. But, I am trying to incorporate a rectangle image of size (720,1440).
However, I end up with an error in the below line as it is not able to match the expected size.

yolov2.pytorch/yolov2.py

Line 32 in 014559c

x = x.view(B, C, int(H / hs), hs, int(W / ws), ws).transpose(3, 4).contiguous()

could you please tell me, how did you come up with these params? If I have to use a rectangle image what should be changed and on what basis?
Thanks in advance