if ( !i_nb_conversions )
{
/* There was only one conversion to do, and we already failed. */
- msg_Err( p_aout, "couldn't find a filter for the conversion" );
+ msg_Err( p_aout, "couldn't find a filter for the conversion "
+ "%4.4s -> %4.4s",
+ &p_input_format->i_format, &p_output_format->i_format );
return -1;
}