#!/bin/sh

quality="40 38 36 34 32 30 28 26 24 22 20"
file="$1"
if [ ! -e $file ]
then
  echo "Usage: ./mk.sh FILENAME"
  exit 1
fi

for n in $quality
do
avconv -i $file -strict experimental -vcodec libx264 -preset fast -crf $n -threads auto -acodec aac -ab 128k -y  $file-$n.mkv
done