#!/bin/bash
#By Samuel George; www.krioma.net
#Original: 27/02/2010
array=(`ls -d */`)
#My scripts run in sub directories, replace with your list of commands to run.
len=${#array[*]}
maxjobs=1
jobnumber=0
#loop over the maximum number of jobs based on the number of files in array
while [ $jobnumber -lt $len ]; do
jobsrunning=0
while [ $jobsrunning -le $maxjobs ]
#start jobs up till maximum and then wait for them to finish before continuing.
do
#go into the directory and run - this is an oddity of my processing
#replace with your own functions
cd "${array[$jobnumber]}"
"run.sh" &
#go back a dir
cd ../
#add to counter so that you know how many jobs are running at once.
jobsrunning=$(( $jobsrunning + 1 ))
#keep a running total, such that the script will loop over all the jobs you want running jobnumber=$(( $jobnumber + 1 ))
done
wait
#keep a listing of where you are.
echo $jobnumber
done

ffmpeg -i Input.avi -f mp4 -acodec libfaac -ar 44100 -ab 128 -vcodec mpeg4 -maxrate 2000 -b 1500 -qmin 3 -qmax 5 -bufsize 4096 -g 300 -s 320x240 -r 30000/1001 outfile.mp4

awk '{h=($2*15)+($3/60)*15+($4/3600)*15; h2=$5+($6/60)+($7/3600); print $1,h,h2}' input > output