[Bug-ocrad] Reg OCRAD usage

[Gobalakrishnan]

Hi,

I'm a beginner in linux and want to explore the features of OCRAD.

I have installed OCRAD V0.19 in my Ubuntu 10.04 LTS. I have a PDF file
and want to convert it to a txt document.

When I execute the below command I'm able to output to the stdout.
gs -sPAPERSIZE=letter -sDEVICE=pnmraw -r300 -dNOPAUSE -dBATCH
-sOutputFile=- -q sample1.pdf | ocrad

I want the output to be stored in a text file. When I issue the below
command I'm getting an error. 
gs -sPAPERSIZE=letter -sDEVICE=pnmraw -r300 -dNOPAUSE -dBATCH
-sOutputFile=sample.txt -q sample1.pdf | ocrad

Error message: ocrad: end-of-file reading pnm file.

I even googled this and could not find any information.

Could you please help me in getting out of this.

Other details:
OCRAD version installed: GNU Ocrad 0.19

Regards,
Gopal