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Mar 15th, 2009
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  1. #!/bin/bash
  2. #####################################################################
  3. #
  4. # This script takes screenshots of a movie
  5. # Depends on mplayer and imagemagick
  6. #
  7. # Made by   Starlite    <http://starl1te.wordpress.com/>
  8. #
  9. # This script is free software; you can redistribute it and/or
  10. # modify it under the terms of the GNU Lesser General Public
  11. # License as published by the Free Software Foundation; either
  12. # version 2 of the License, or (at your option) any later version.
  13. #
  14. #####################################################################
  15.  
  16. usage="Type shot -h for help"
  17. _help(){
  18. echo -e "\nusage: shot [options] [file] ... [fileN]\n
  19. Options:
  20.  -t <time> - Set time (in minutes) between screenshots; the number of screenshots is calculated automatically.
  21.  -n <number> - Set a fixed number of screenshots to take.
  22.  -r <percent> - Change the size of the output image. Less than 40% is recommended.
  23.  -s - Seed mode. Gives extra video and audio information. Removes spaces.
  24.  -h - Display this help message\n
  25.  
  26. If you don't like taken screenshots, try to run the script once more.
  27. This script depends on Mplayer and ImageMagic.\n
  28. Usage example:
  29. shot -n 25 -r 35% ~/films/film.avi\n"
  30. }
  31.  
  32. shot(){
  33. # Making screenshots...
  34. for i in `seq 1 $shots_number`;
  35. do
  36.   randomiser=$RANDOM; let "randomiser %= 25"
  37.   hop=`echo $[$shot_time*60*$i+$randomiser]`
  38.   mplayer -ss $hop -noautosub -frames 1 -ao null -vo png "$file_path" > /dev/null 2>&1
  39.   mv 00000001.png /tmp/shots/$i.png
  40.   echo -ne "Taking screenshot #${i} \r"
  41. done
  42.   echo "Taking screenshots...           [OK]"
  43. }
  44.  
  45.  
  46. # ====== first step is here! ;-) ========
  47. # Checking options...
  48. while getopts ":t:n:r:sh" option
  49.     do
  50.         case $option in
  51.         t ) shot_time=$OPTARG; opt=_time;;
  52.         n ) shots_number=$OPTARG; opt=_num;;
  53.         h ) _help; opt=1; exit 1;;
  54.         s ) seed=1;;
  55.         r ) res=$OPTARG;;
  56.         : ) echo "No argument given"; opt=1; exit 1;;
  57.         * ) echo "Unknown option"; echo $usage; opt=1; exit 1;;
  58.         esac
  59.     done
  60.  
  61. if [ "$res" == "" ]; then res=35%; fi
  62. if [ "$opt" == "" ]; then echo "No option given!"; echo $usage; exit 1; fi
  63. shift $(($OPTIND - 1))
  64. if [ "$1" == "" ]; then echo "No file given!"; echo $usage; exit 1; fi
  65. mkdir /tmp/shots
  66.  
  67. # Parsing files...
  68. while [ "$1" != "" ]
  69. do
  70.   file_path=$1
  71.   file_name_ext=${file_path##*/}
  72.   file_name=`echo "$file_name_ext" | sed '$s/....$//'`
  73.   randomiser=0
  74.   quality=87
  75.   movdir=`dirname "$file_path"`
  76.     if [ "$movdir" == "." ]; then
  77.     movdir=`pwd`
  78.     file_path=$movdir/$file_path
  79.     fi
  80.   cd "$movdir"
  81. echo "Processing file $file_name_ext..."
  82.  
  83. # Getting movie length...
  84. length=`mplayer -identify "$file_path" -frames 1 -ao null -vo null 2>/dev/null \
  85. | grep LENGTH | sed -e 's/^.*=//' -e 's/[.].*//'`
  86.  
  87. if [ "$length" == "" ]; then echo "Error! Can't get the length of the movie."; exit 1; fi
  88.  
  89. if [ "$opt" == "_time" ]; then
  90.     shots_number=`echo $[$length/60/$shot_time]`
  91.     shot
  92. elif [ "$opt" == "_num" ]; then
  93.     shot_time=`echo $[$length/$shots_number/60]`
  94.     shot
  95. fi
  96.  
  97. # Placing all taken screenshots in one picture...
  98. echo -n "Putting screenshots together..."
  99. cd /tmp/shots/
  100. montage -geometry +2+2 `ls *.png | sort -n` "$file_name".jpg
  101. mogrify -resize $res "$file_name".jpg
  102. echo " [OK]"
  103. echo -n "Getting video info..."
  104. size=`stat -c%s "$file_path"`
  105. size=`echo $[$size/1024/1024]`
  106. format=`mplayer -frames 1 -ao null -vo null -identify 2>/dev/null "$file_path" | grep VIDEO: | cut -d " " -f 5`
  107. length=`echo $[$length/60]`
  108. # It's a tricky code here, it adds some info about the movie to the output image.
  109. echo -e "File name: $file_name_ext\nSize: $size Mb\nResolution: $format\nDuration: $length min." | convert -pointsize 16 -trim +repage text:- text.jpg
  110. convert "$file_name".jpg -quality $quality -splice 0x80 -draw 'image over 5,5 0,0 text.jpg' "$movdir/$file_name".jpg
  111. echo "           [OK]"; echo
  112. cd "$movdir"
  113.     if [ "$seed" == "1" ]; then
  114.     VIDEO=`mplayer -frames 1 -ao null -vo null -identify 2>/dev/null "$file_path" | grep VIDEO:`
  115.     AUDIO=`mplayer -frames 1 -ao null -vo null -identify 2>/dev/null "$file_path" | grep AUDIO: | cut -d "(" -f 1`
  116.     echo -e "LENGTH: $length min.\n$VIDEO\n$AUDIO"; echo
  117.     file_name_sp=`echo "$file_name" | sed 's/ /_/g'`
  118.     mv "$file_name".jpg "$file_name_sp".jpg 2>/dev/null
  119.     fi
  120. shift
  121. done
  122.  
  123. rm -r /tmp/shots
  124. echo "Done"
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