Created
May 2, 2016 01:15
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Convert Video to GIF on OSX https://github.com/vvo/gifify
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for f | |
do | |
# Change this value to increase maximum size | |
GIF_MAX_SIZE=480 | |
dir="$(dirname "$f")" | |
name="$(basename "$f")" | |
cd "$dir" | |
video_properties=$(/usr/local/bin/mplayer -really-quiet -ao null -vo null -identify -frames 0 "$f") | |
video_width=$(echo $video_properties | sed -e 's/.*\ID_VIDEO_WIDTH=\([0-9]*\).*/\1/') | |
video_height=$(echo $video_properties | sed -e 's/.*\ID_VIDEO_HEIGHT=\([0-9]*\).*/\1/') | |
aspect_ratio=$(echo "$video_width $video_height" | awk '{printf "%.5f", $1/$2}') | |
# shrink larger dimension to GIF_MAX_SIZE; | |
if [ $video_height -lt $video_width ] | |
then | |
final_width=$GIF_MAX_SIZE | |
final_height=$(echo "$final_width $aspect_ratio" | awk '{printf "%3.0f", $1/$2}') | |
else | |
final_height=$GIF_MAX_SIZE | |
final_width=$(echo "$final_height $aspect_ratio" | awk '{printf "%3.0f", $1/(1/$2)}') | |
fi | |
# Don't change dimensions if both are below GIF_MAX_SIZE | |
if [$video_width -lt $GIF_MAX_SIZE] && [$video_height -lt $GIF_MAX_SIZE] | |
then | |
final_width=$video_width | |
final_height=$video_height | |
fi | |
/usr/local/bin/mplayer -ao null -vo png:z=1:outdir=.temp -vf scale=$final_width:$final_height "$f" | |
/usr/local/bin/convert +repage -fuzz 1.6% -delay 1.7 -loop 0 .temp/*.png -layers OptimizePlus -layers OptimizeTransparency .temp.gif | |
/usr/local/bin/gifsicle -O3 --colors 256 .temp.gif > "${name%.*}.gif" | |
# Cleanup | |
rm -rf .temp | |
rm -rf .temp.gif | |
done |
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