Simple video to gif converter with ffmpeg and zenity

Gif Generator

#!/bin/sh

width=$(zenity \
	--entry \
	--title "Gif Generator" \
	--text "Width" \
	--entry-text "-1" );

if [ -z $width]
	then
		exit
fi

height=$(zenity \
	--entry \
	--title "Gif Generator" \
	--text "Height" \
	--entry-text "-1" );

if [ -z $height]
	then
		exit
fi

fps=$(zenity \
	--entry \
	--title "Gif Generator" \
	--text "Fps" \
	--entry-text "15" );

if [ -z $fps]
	then
		exit
fi

name=$(zenity \
	--entry \
	--title "Gif Generator" \
	--text "Name" \
	--entry-text "${1%%.*}" );

if [ -z $name]
	then
		exit
fi

notify-send -i "multimedia-video-player" "Gif Generator" "Gerating Gif!"


palette="/tmp/palette.png"

filters="fps=$fps,scale=$width:$height:flags=lanczos"

ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
ffmpeg -v warning -i $1 -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y $name".gif"
notify-send -i "multimedia-video-player" "Gif Generator" "Finished!"