$ patch -p0 < x264_sliceless_threads.00.win32.00.diff 
patching file `encoder/analyse.c'
Hunk #1 FAILED at 239.
1 out of 1 hunk FAILED -- saving rejects to encoder/analyse.c.rej
patching file `encoder/encoder.c'
Hunk #1 FAILED at 1006.
1 out of 1 hunk FAILED -- saving rejects to encoder/encoder.c.rej
patching file `common/common.h'
Reversed (or previously applied) patch detected!  Assume -R? [n] 
Apply anyway? [n] 
Skipping patch.
2 out of 2 hunks ignored -- saving rejects to common/common.h.rej
patching file `common/frame.h'
Hunk #1 FAILED at 73.
Hunk #2 succeeded at 105 (offset -5 lines).
1 out of 2 hunks FAILED -- saving rejects to common/frame.h.rej
patching file `common/thread.h'
patching file `common/frame.c'
Hunk #1 succeeded at 130 (offset -1 lines).
Hunk #3 succeeded at 742 (offset -14 lines).
can't find file to patch at input line 250
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|Index: doc/threads.txt
|===================================================================
|--- doc/threads.txt    (revision 80)
|+++ doc/threads.txt    (working copy)
--------------------------
File to patch: