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problems about calccoef

li li2
Prodigy 50 points

Hi,

I want to change image size from 720*576 to 360*388 by resizer. My platform is DM6437. The source data is  in DDR with YUV422 interlaced format. Now I has some problems about the filter coefficients.

1、I tried to use calccoef provided in paraai7b, but it failed.  when I entered the order "./calccoef –i720x240 –o352x288 > coefs_720x240_to_352x288.h" provided in paraai7b, a coefs_720x240_to_352x288.h file is created. But it is empty without any word. I want to know whether the utility has some special requirements other than a linux system?

2. when i entered "./calccoef –i720x576 –o360x288 > coefs_720x576_to_360x288.h", it shows invalid input 720*576. Why can this error appears? 

3. Please generate the proper filter cofficients for my application first!

Thanks !!!!!!!