system("$mencoder $encode_options_pass1 -o ./$encoded_dir/$current_output_file -idx $current_file 2>$tempfile");
system("$mencoder $encode_options_pass2 -o ./$encoded_dir/$current_output_file -idx $current_file 2>>$tempfile");
if(! -e "./$encoded_dir/$current_output_file") {
system("$mencoder $encode_options_pass1 -o ./$encoded_dir/$current_output_file -idx $current_file 2>$tempfile");
system("$mencoder $encode_options_pass2 -o ./$encoded_dir/$current_output_file -idx $current_file 2>>$tempfile");
if(! -e "./$encoded_dir/$current_output_file") {