Ah, thanks for the explanation. I totally misunderstood the use case. 
Could you check, if this would work?
x = torch.randn(5, 3, 1080, 1920)
y = F.interpolate(x, (234, 416))
res = torch.ones(5, 3, 416, 416) * 126.
res[:, :, 91:325, :] = y