nnedi v1.3. foxyshadis's argument about the cache and ram usage in general convinced me to add an option to internally do the needed copying for doubling the height... so no need to call pointresize anymore. I was also using a separate filter to pad the frames prior to nnedi, and then invoking crop afterwards. That has been done away with as well. I also discovered a bug in the yuy2 padding code, which resulted in occasionally incorrect (+-3) interpolated chroma values at the left and right hand sides of the image.
I updated the code in the first post to use the new 'dh' option instead of pointresize.