Hi, The following filter chain fails: -vf crop=720:416:0:82,scale -zoom -xy 640,harddup with the message: +------------------------ andrew at skamandros~/movies/matrix$ mencoder -v matrix.vob -o /dev/null -alang en -oac copy -ovc x264 \ > -x264encopts pass=1:threads=auto:turbo=1:bitrate=1000:subq=6:partitions=all:8x8dct:\ > me=umh:frameref=5:trellis=1:bframes=3:b_pyramid:weight_b \ > -vf crop=720:416:0:82,scale -zoom -xy 640,harddup MEncoder dev-SVN-r27647 (C) 2000-2008 MPlayer Team CPU: Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz (Family: 6, Model: 15, Stepping: 2) CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2 The xy option must be a floating point number or a ratio (numerator[:/]denominator): 640,harddup Exiting... (error parsing command line) +--------------------- I understood that 'harddup' must be at the end or _near_ the end of the filter chain but I have not been able to find a method to place it at the end. Am I missing something obvious? Thanks for your trouble, Andrew -- Do you think that's air you're breathing?