avcmd="avconv -y -i $file -map 0 -map -0:s -vcodec libx264 -acodec libfaac $dirname/$basename.mp4"
    echo "$avcmd"
    success=1; $avcmd && success=0
    if [ $success -eq 0 ]; then
      echo "Hurray!"
      echo $filename >> converted.txt
    else
      echo "Oh, crap!"
      echo $filename >> failed.txt
    fi