ffmpeg for video to gif

vid2gif

function vid2gif () {
    vid="$1"    
    #start_time=00:00:01
    #duration=5       
    height=-1       # input height halved , can replace with pixils . 
    width=480       # keeps aspect ratio . can replace with pixils . 
    fps=25          # frames per a second .

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

#ffmpeg -ss $start_time \
#       -t  $duration \
#       -i  "$vid" \
    ffmpeg -i  "$vid" \
        -vf "$filters,palettegen" \
        -y  palette.png &&
    ffmpeg -i  "$vid" \
        -i  palette.png \
        -lavfi "$filters [x]; [x][1:v] paletteuse" \
        -y  "${vid/.*}".gif && rm palette.png
}