2014/08/09 at Ubuntu14.04LTS

ii=0;
for f in `ls -1 ../2014080[1-4]interval/*JPG | sort` ; do 
  echo $i $f; 
  ln -s $f `printf "%04d.JPG" $ii`; 
  ii=$((ii+1)); 
done

ffmpeg -r 29.97 -i %04d.JPG -c:v libx264 -vf scale=-1:1080 out004.mp4