Error : using imagemagick pipe with yuv file

Error piping yuv file to another command:

Hi,

I am trying to use piping in imagemagick with yuv file. I want to operate 
convert on a yuv file(4:2:0 format) and pass the output to next command 
using a pipe. I am getting the following error

Command I run:

$ ./convert.exe -size 176x144 test.yuv  -rotate  2  '-'  | ./convert.exe 
'-' -resize 50%  output.yuv

error:

convert.exe: no decode delegate for this image format 
`C:/DOCUME~1/user/LOCALS~1/Temp/magick-bZfgVBhQ' @ 
constitute.c/ReadImage/526.
convert.exe: missing an image filename `output.yuv' @ 
convert.c/ConvertImageComm
and/2732.


Chalamala Srinivasa Rao
Tata Consultancy Services
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India
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