git.plutz.net Git - serve0/blob - thumbnail.sh

   1 #!/bin/sh
   2
   3 [ -n "$include_thumbnails" ] && return 0
   4 include_thumbnails="$0"
   5
   6 gen_thumb(){
   7   file="$1"; thumb="$2";
   8
   9   if [ ! -e "$thumb" ] && [ -f "$file" ]; then
  10     l="$(
  11       printf '' \
  12       | mplayer -input nodefault-bindings -nosound -vo null -identify -frames 0 "$file" 2>&- \
  13       | sed -rn 's:ID_LENGTH=(.*)(\..*)$:\1:p;' \
  14     )"
  15
  16     chunk="$((${l:-10} / 5))"
  17
  18     tmp="$(mktemp -d)"
  19     for cnt in 1 2 3 4; do
  20       printf '' \
  21       | mplayer -input nodefault-bindings -nosound -benchmark \
  22                 -noconfig all -really-quiet \
  23                 -frames 1 -ss "$((cnt * chunk))" \
  24                 -vf framestep=I \
  25                 -vo jpeg:quality=100:outdir="${tmp}" \
  26                 "$file" 2>&-
  27       mv "${tmp}/00000001.jpg" "${tmp}/_${cnt}.jpg"
  28     done
  29     printf '' \
  30     | mplayer -input nodefault-bindings -nosound -benchmark \
  31               -noconfig all -really-quiet \
  32               -vf scale=159:-2,tile=2:2:4:0:2 \
  33               -vo jpeg:quality=96:outdir="${tmp}"\
  34               "mf://$tmp/_*.jpg" 2>&-
  35
  36     mv "${tmp}/00000001.jpg" "$thumb"
  37     rm -r "${tmp}"
  38
  39   elif [ ! -e "$thumb" ]; then
  40     touch "$thumb"
  41   fi
  42 }