[mythtv] creating a patch

[Craig Longman]

k,  i'm getting ready to send a patch that adjusts the samplerate for 
transcoding properely (well, almost, more on that in a minute).

but i'm uncertain how to create the patch file.  i've tried:
    cvs -z3 diff -uc

but that produces a file with some @@ lines in it, which i don't think 
is right.  how does one do this?

cheers,

    CraigL->Thx();