filter_rescale.c: if input width or height are zero, infer them from the profile

[melted] / setenv_mc

# Environment variable settings to allow execution without install

export LD_LIBRARY_PATH=\
`pwd`/../mpeg_sdk_release/bin:\
`pwd`/../dvcpro_sdk_release/lib:\
`pwd`/../sr_sdk_release/lib:\
$LD_LIBRARY_PATH