I am trying to reproject an ECW Orthophoto from 25830 to 23030 srid. I tried the following but I am getting an error:
C:\Program Files (x86)\FWTools2.4.7>gdalwarp -s_srs 25830 -t_srs 23030 C:\orto.e
cw C:\orto_ed50.ecw
ERROR 1: Translating source or target SRS failed:
25830