I have been trying to get gdal_retile working with the --optfile command. At first it did not work because in my files.txt I have '-' characters in the filename. I tried adding quotes around the files, and that seemed to work, but then gdal_retile would just freeze. So I have two questions:
Would using the --opfile command essentially be the same thing as calling gdal_retile from the command line once for every single file I have? Would I get the exact same results?
Does gdal2tiles do the same exact thing?