>>2303045 (lb)
Dunno if you saw the link to a command line decoder for the FT algo pixelknot uses -https://code.google.com/archive/p/f5-steganography/
Might make it easier depending on how you're doing it.
Well the ft decoder doesn't seem to be compatible with pixelknot. Or at least I can't get one to consume the other.. So much for that idea.