[Help-bash] hi, doubt about xargs

[Joaquin Villanova]

Hi, i want to convert all my existing pdf documents to djvu (just to 
give a brief intro) then i decided to use bash shell and find / xargs, 
so i executed the following
find ~/ -name '*pdf*' -print0 | xargs -0  -n 1 pdf2djvu -i '{}' -o '{}'

In pdf2djvu -i goes for input and -o for output. The issue here is that 
i want to get the output to the same directories to the inputfile, but 
with this order all what i get is one output file only, thanks in advance!