/dev/fd

[Osmany Guirola Cruz]

Hi people
  i am using a program(encode2mpeg) but it use this devices 
/dev/fd/3 y /dev/fd/4 but in my system i only have 

/dev/fd/0 /dev/fd/1 /dev/fd/2.....

How can i create this devices? 

thanks 

Osmany