Fix script

modules/mp4_to_jpg.sh

@@ -18,16 +18,16 @@ for FILEPATH in $FILES; do
     EXTENSION="${NAME##*.}"
     NAME="${NAME%.*}"
     echo -e "$NAME"
-    start_time=$(bc -l<<<"$duration*0.1")
-    end_time=$(bc -l<<<"$duration*0.9")
-    length_time=$(bc -l<<<"$duration*0.8")
-    rate=$(bc -l<<<"($IMAGE_NUM-1)/$duration/0.8")
+    start_time=$(bc -l<<<"$duration*0.25")
+    end_time=$(bc -l<<<"$duration*0.95")
+    length_time=$(bc -l<<<"$end_time-$start_time")
+    rate=$(bc -l<<<"($IMAGE_NUM-2)/$length_time")
     if LANG=C grep -q -n -v '^[[:cntrl:][:print:]]*$' <<< "$NAME" ; then
         name_format=$(echo "$NAME" | uconv -x "Fullwidth-Halfwidth")
         name_en=$(echo $(trans -brief -no-warn -no-ansi ja:en "$name_format") | sed -e "s/\./ /g" | sed -e "s/^The *//" | sed -e "s/^ *//" | sed -e "s/ *$//" | sed -e "s/  / /" | sed -e "s/#//" )
         NAME=$name_en
     fi
-    echo "ffmpeg -ss $start_time -t $length_time -i \"$FILEPATH\" -r $rate \"$OUTPUT_DIR/$NAME%06d.jpg\""
-    ffmpeg -ss $start_time -t $length_time -i "$FILEPATH" -r $rate "$OUTPUT_DIR/$NAME%06d.jpg"
+    echo "ffmpeg -ss $start_time -t $end_time -i \"$FILEPATH\" -r $rate \"$OUTPUT_DIR/$NAME%06d.jpg\""
+    ffmpeg -ss $start_time -t $end_time -i "$FILEPATH" -r $rate "$OUTPUT_DIR/$NAME%06d.jpg"
     echo "-----"
 done