diff options
Diffstat (limited to 'make-gif')
| -rwxr-xr-x | make-gif | 104 |
1 files changed, 66 insertions, 38 deletions
@@ -12,14 +12,17 @@ usage() { [[ "$1" != "" ]] && print_error $1 echo "Usage: $callstr [OPTIONS...] <infile> <outfile>" echo "" - echo " description option default val" - echo " start time -s <time> 00:00:00" - echo " length in seconds -t <num> full length" - echo " gif fps -f <num> 10" - echo " gif pixel width -w <num> 480" - echo " use subtitle track -b <int> none" - [[ $hasgsic ]] && echo "optimise with gifsicle -g" - echo " print this help -h" + echo " description option default val" + echo " start time -s <time> 00:00:00" + echo " length in seconds -t <num> full length" + echo " gif fps -f <num> 10" + echo " gif pixel width -w <num> 480" + echo " use subtitle track -b <int> none" + echo " number of colours -c <int> 256" + echo " dithering algorithm -d <str> sierra2_4a" + echo "redraw only changed rect -r" + [[ $hasgsic ]] && echo " optimise with gifsicle -o" + echo " print this help -h" exit 1 } @@ -48,18 +51,25 @@ local width=480 local subs="" local strack=0 local gsic="" +local dithalg="sierra2_4a" +local colour_count=256 +local rect="" local timepat='^(([0-9][0-9]:){1,2}[0-9][0-9]|[0-9]+)(\.[0-9]+){0,1}$' local numpat='^[1-9][0-9]*(\.[0-9]+){0,1}$' local intpat='^[1-9][0-9]*$' local zintpat='^[0-9]+$' +local dithpat='^(bayer[0-5]|heckbert|floyd_steinberg|sierra2|sierra2_4a)$' -# tmp var used to hold '-t' if length is used +# used to hold '-t' if length is used local t="" +# used to hold subtitle options, if present +local substr="" + # really annoying, but no other good way to do optional args if [[ $hasgsic ]]; then - while getopts :s:t:f:w:bhn:g opt; do + while getopts :s:t:f:w:b:c:d:rho opt; do case "$opt" in s) [[ ! $(echo $OPTARG | grep -oE "$timepat") ]] \ @@ -88,13 +98,27 @@ if [[ $hasgsic ]]; then strack=$OPTARG subs=true ;; - g) gsic=true ;; + c) + [[ ! $(echo $OPTARG | grep -oE "$intpat") ]] \ + || [[ $OPTARG -gt 256 || $OPTARG -lt 2 ]] \ + && usage "colour count must be an integer in the range 2-256" + colour_count=$OPTARG + ;; + d) + [[ ! $(echo $OPTARG | grep -oE "$dithpat") ]] \ + && usage "dithering algorithm must be one of bayer<0-5>, heckbert, floyd_steinberg, sierra2, sierra2_4a" + dithalg=$OPTARG + [[ $(echo $OPTARG | grep -o bayer) ]] \ + && dithalg="bayer:bayer_scale=$(echo $OPTARG | grep -oE '[0-5]')" + ;; + o) gsic=true ;; + r) rectmode=":diff_mode=rectangle" ;; h) usage ;; [?]) usage "unrecognised option" ;; esac done else - while getopts :s:t:f:w:bhn: opt; do + while getopts :s:t:f:w:b:c:d:rh opt; do case "$opt" in s) [[ ! $(echo $OPTARG | grep -oE "$timepat") ]] \ @@ -123,6 +147,20 @@ else strack=$OPTARG subs=true ;; + c) + [[ ! $(echo $OPTARG | grep -oE "$intpat") ]] \ + || [[ $OPTARG -gt 256 || $OPTARG -lt 2 ]] \ + && usage "colour count must be an integer in the range 2-256" + colour_count=$OPTARG + ;; + d) + [[ ! $(echo $OPTARG | grep -oE "$dithpat") ]] \ + && usage "dithering algorithm must be one of bayer<0-5>, heckbert, floyd_steinberg, sierra2, sierra2_4a" + dithalg=$OPTARG + [[ $(echo $OPTARG | grep -o bayer) ]] \ + && dithalg="bayer:bayer_scale=$(echo $OPTARG | grep -oE '[0-5]')" + ;; + r) rectmode=":diff_mode=rectangle" ;; h) usage ;; [?]) usage "unrecognised option" ;; esac @@ -164,33 +202,23 @@ ffprobe -loglevel -8 -print_format json -show_streams "${tmp_pref}-in" \ | IFS=':' read -A as [[ "$as" != "" ]] && let "height = ${width} * ${as[2]} / ${as[1]}" +[[ $subs ]] && substr="subtitles=${tmp_pref}-in:si=$strack," + # convert -if [[ $subs ]]; then - echo "pass 1..." - ffmpeg -loglevel 16 -y -ss $start $t $length -i "${tmp_pref}-in" -copyts \ - -vf "subtitles=${tmp_pref}-in:si=$strack,setsar=1/1,fps=$fps,scale=${width}:${height}:flags=lanczos,palettegen" \ - ${tmp_pref}-palette.png - [[ $? -ne 0 ]] && fferr=true - [[ ! $fferr ]] && echo "pass 2..." && ffmpeg -loglevel 24 \ - -ss $start $t $length \ - -i "${tmp_pref}-in" -i ${tmp_pref}-palette.png \ - -copyts -filter_complex \ - "subtitles=${tmp_pref}-in:si=$strack,setsar=1/1,fps=$fps,scale=${width}:${height}:flags=lanczos[x];[x][1:v]paletteuse" \ - "$2" || abort - [[ $? -ne 0 ]] && fferr=true -else - echo "pass 1..." - ffmpeg -loglevel 16 -y -ss "$start" $t $length -i "${tmp_pref}-in" \ - -vf "setsar=1/1,fps=$fps,scale=${width}:${height}:flags=lanczos,palettegen" \ - ${tmp_pref}-palette.png - [[ $? -ne 0 ]] && fferr=true - [[ ! $fferr ]] && echo "pass 2..." && ffmpeg -loglevel 24 \ - -ss $start $t $length \ - -i "${tmp_pref}-in" -i ${tmp_pref}-palette.png -filter_complex \ - "setsar=1/1,fps=$fps,scale=${width}:${height}:flags=lanczos[x];[x][1:v]paletteuse" \ - "$2" - [[ $? -ne 0 ]] && fferr=true -fi +echo "pass 1..." +ffmpeg -loglevel 16 -y -ss "$start" $t $length -i "${tmp_pref}-in" -copyts -filter_complex \ + "${substr}setsar=1/1,fps=$fps,scale=${width}:${height}:flags=lanczos,palettegen=max_colors=${colour_count}" \ + ${tmp_pref}-palette.png + +[[ $? -ne 0 ]] && fferr=true + +[[ ! $fferr ]] && echo "pass 2..." && ffmpeg -loglevel 24 \ + -ss $start $t $length \ + -i "${tmp_pref}-in" -i ${tmp_pref}-palette.png -copyts -filter_complex \ + "${substr}setsar=1/1,fps=$fps,scale=${width}:${height}:flags=lanczos[x];[x][1:v]paletteuse=dither=${dithalg}${rectmode}" \ + "$2" + +[[ $? -ne 0 ]] && fferr=true [[ $fferr ]] && abort rm_tmps |