Jean Hoderd wrote:

Hi,

I was wondering what is the correct order for placing a denoise filter such as hqdn3d: should it be before or after scaling?

This:

-vf crop=680:552:22:12,scale=512:384,hqdn3d

Versus this:

-vf crop=680:552:22:12,hqdn3d,scale=512:384

Also, I was looking for a more detailed explanation of the meaning of hqdn3d parameters. MPlayer's manual is terse at best... Can someone point me to a reference? (My googling came back empty-handed)

Thanks in advance for your time! Cheers, Jean

If you are shrinking movie down - then after. If you enlarge it - then put it before. Parameters are not clearly defined, try and see method is the best here. Philipp