Mine

for i in `find /media/Video/Serien/Scrubs/ -name *.avi | sort`; do e="`echo $(basename $i | sed 's/.*E\(..\).*/\1/') % 2 | bc`";  if [ $e -ne 0 ]; then ffmpeg -i $i -vcodec xvid -b 300 -qmin 3 -qmax 5 -bufsize 4096 -g 300 -acodec aac -ab 128 -s 320x240 -aspect 4:3 `basename $i | sed 's/\.avi/.mp4/'`; fi; done