Alan

Thanks for your reminder. I have fixed this issue.

It seems that the 5.731M means the model file size.

Hey, I still got some problems in SRFlow. The training is not stable and easy to raise Error 'Rerturn NaN'. So I think we can discuss about it.~

Sorry for that, I used MeanBlur() in model testing. In the end,MeanBlur() was not used in the final model and can be removed directly.

`vgg.py` comes from the src [EDSR](https://github.com/thstkdgus35/EDSR-PyTorch), you can find MeanShift function in model/common.py.

I will also add MeanShift in `common.py` Thanks for your question~

Sorry for my mistake. I have fixed this issue.

Hi, I also use Y channel to calculate PSNR. You can check the function `calc_psnr` in [utility.py](https://github.com/Alan-xw/RealSR/blob/master/utility.py)

Hi, you can import `torch.nn.functional as F` module and use `F.interpolate()` function to upscale image first.

Thanks for help. I download `FAN `model files from #62 . However, the `s3fd_convert.pth` model file is also pretty slow to download from the servers.