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-rwxr-xr-xscripts/.scripts/2gif.sh109
1 files changed, 109 insertions, 0 deletions
diff --git a/scripts/.scripts/2gif.sh b/scripts/.scripts/2gif.sh
new file mode 100755
index 0000000..ec325dc
--- /dev/null
+++ b/scripts/.scripts/2gif.sh
@@ -0,0 +1,109 @@
+#!/bin/sh
+
+# source: https://github.com/Drakirus/dotfiles/blob/master/bin/2gif
+
+$(ffmpeg --help 2> /dev/null > /dev/null)
+
+if [[ $? -ne 0 ]]; then
+ echo "ffmpeg is required!"
+ exit 1
+fi
+
+# default values
+FPS=12
+
+# read the options
+TEMP=`getopt -o c:r:f:t:s:d:hl:: --long resolution:,fps:,start:,to:,duration:,help,loop:: -n $0 -- "$@"`
+eval set -- "$TEMP"
+
+# extract options and their arguments into variables.
+while true ; do
+ case "$1" in
+ -h|--help)
+ echo -e "Usage: $0 [options] <input video file> <output gif name>\n"
+ echo "Options:"
+ echo " -h, --help Show this help"
+ echo " -r, --resolution Set the pixels wide (preserving the aspect ratio)"
+ echo " -f, --fps Set the gif frame rate"
+ echo " default 12"
+ echo " -s, --start Skip the first x seconds"
+ echo " -t, --to Capture to x seconds"
+ echo " -d, --duration Set the duration"
+ echo " -l, --loop Number of times to loop the output"
+ echo " default: no loop"
+ echo " -l output loop infinitely"
+ echo " -l10 output loop 10 times"
+ echo "Examples:"
+ echo " $0 input.mp4 out.gif"
+ echo " $0 input.mp4 out.gif -s"00:01" -d5 -r450"
+ echo " $0 input.mp4 out.gif -s"20:00" -d5 -l --fps30"
+ exit;;
+ -r|--resolution)
+ case "$2" in
+ "") shift 2 ;;
+ *) RESOLUTION="$2"; shift 2 ;;
+ esac ;;
+ -t|--to)
+ case "$2" in
+ "") shift 2 ;;
+ *) TO="-t $2"; shift 2 ;;
+ esac ;;
+ -l|--loop)
+ case "$2" in
+ "") LOOP="-loop=0" ; shift 2 ;;
+ *) LOOP="-loop=$2" ; shift 2 ;;
+ esac ;;
+ -f|--fps)
+ case "$2" in
+ "") shift 2 ;;
+ *) FPS="$2"; shift 2 ;;
+ esac ;;
+ -s|--start)
+ case "$2" in
+ "") shift 2 ;;
+ *) START="-ss $2"; shift 2 ;;
+ esac ;;
+ -d|--duration)
+ case "$2" in
+ "") shift 2 ;;
+ *) DURATION="-t $2"; shift 2 ;;
+ esac ;;
+ --) shift ; break ;;
+ *) echo "Internal error!" ; exit 1 ;;
+ esac
+done
+
+if [[ "$#" -ne 2 && "$#" -ne 1 ]]; then
+ echo -e "Usage: $0 [options] <input video file> <output gif name>\n"
+ echo -e "Illegal number of parameters or parameters.\nFor more informations:\n $0 --help "
+ exit 1
+fi
+
+OUTPUT="$2"
+
+if [[ "$#" -eq 1 ]]; then
+ filename=$(basename "$1")
+ filename="${filename%.*}.gif"
+ OUTPUT=$filename
+fi
+
+if [[ "$RESOLUTION" -eq "" ]]; then
+ eval $(ffprobe -v error -of flat=s=_ -select_streams v:0 -show_entries stream=width "$1")
+ RESOLUTION=${streams_stream_0_width}
+fi
+
+palette=$(mktemp /tmp/palette_XXXX.png)
+
+filters="fps=$FPS,scale=$RESOLUTION:-1:flags=lanczos"
+
+# echo $filters
+
+# http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html#usage
+
+# create global color palette
+ffmpeg -v warning $START $TO $DURATION -i "$1" -vf "$filters,palettegen" -y "$palette"
+
+# create GIF
+ffmpeg -v warning $START $TO $DURATION -i "$1" -i "$palette" -lavfi "$filters [x]; [x][1:v] paletteuse" -y "$OUTPUT"
+
+rm $palette