diff options
Diffstat (limited to '.config/init')
| l---------[-rwxr-xr-x] | .config/init/funcs/make-gif | 203 | ||||
| m--------- | .config/init/submodules/make-gif | 0 |
2 files changed, 1 insertions, 202 deletions
diff --git a/.config/init/funcs/make-gif b/.config/init/funcs/make-gif index 320a4a0..b4f7b30 100755..120000 --- a/.config/init/funcs/make-gif +++ b/.config/init/funcs/make-gif @@ -1,202 +1 @@ -#!/usr/bin/env zsh -# export a clip from a video as a gif - -local callstr="$0" -local hasgsic=$(whence gifsicle) - -print_error() { - echo -e "\e[1;31merror:\e[0m $1\n" -} - -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 subtitles -b" - echo " use subtitle track -n <int> 0" - [[ $hasgsic ]] && echo "optimise with gifsicle -g" - echo " print this help -h" - exit 1 -} - -# preface used to ensure unique inputs, just in case links exist. see below -local tmp_pref - -rm_tmps() { - rm -f ${tmp_pref}-palette.png - rm -f ${tmp_pref}-in -} - -abort() { - [[ "$1" != "" ]] && print_error $1 - rm_tmps - exit 1 -} - -local start="00:00:00" -local length="" -local fps=10 -local width=480 -local subs="" -local strack=0 -local gsic="" - -local timepat='^(([0-9][0-9]:){1,2}[0-9][0-9]|[0-9]+)(\.[0-9]+){0,1}$' -local numpat='^[1-9][0-9]*(\.[0-9]+){0,1}$' -local intpat='^[1-9][0-9]*$' -local zintpat='^[0-9]+$' - -# tmp var used to hold '-t' if length is used -local t="" - -# really annoying, but no other good way to do optional args -if [[ $hasgsic ]]; then - while getopts :s:t:f:w:bhn:g opt; do - case "$opt" in - s) - [[ ! $(echo $OPTARG | grep -oE "$timepat") ]] \ - && usage "malformed start timestamp" - start="$OPTARG" - ;; - t) - [[ ! $(echo $OPTARG | grep -oE "$numpat") ]] \ - && usage "length must be a positive rational number" - length=$OPTARG - t="-t" - ;; - f) - [[ ! $(echo $OPTARG | grep -oE "$numpat") ]] \ - && usage "fps must be a positive rational number" - fps=$OPTARG - ;; - w) - [[ ! $(echo $OPTARG | grep -oE "$intpat") ]] \ - && usage "width must be a positive integer" - width=$OPTARG - ;; - b) subs=true ;; - n) - [[ ! $(echo $OPTARG | grep -oE "$zintpat") ]] \ - && usage "sub track index must be a non-negative integer" - strack=$OPTARG - ;; - g) gsic=true ;; - h) usage ;; - [?]) usage "unrecognised option" ;; - esac - done -else - while getopts :s:t:f:w:bhn: opt; do - case "$opt" in - s) - [[ ! $(echo $OPTARG | grep -oE "$timepat") ]] \ - && usage "malformed start timestamp" - start="$OPTARG" - ;; - t) - [[ ! $(echo $OPTARG | grep -oE "$numpat") ]] \ - && usage "length must be a positive rational number" - length=$OPTARG - t="-t" - ;; - f) - [[ ! $(echo $OPTARG | grep -oE "$numpat") ]] \ - && usage "fps must be a positive rational number" - fps=$OPTARG - ;; - w) - [[ ! $(echo $OPTARG | grep -oE "$intpat") ]] \ - && usage "width must be a positive integer" - width=$OPTARG - ;; - b) subs=true ;; - n) - [[ ! $(echo $OPTARG | grep -oE "$zintpat") ]] \ - && usage "sub track index must be a non-negative integer" - strack=$OPTARG - ;; - h) usage ;; - [?]) usage "unrecognised option" ;; - esac - done -fi -shift $OPTIND-1 - -# check some error conditions -[[ ${#@} -gt 2 ]] && usage "trailing arguments detected" - -[[ ${#@} -lt 2 ]] && usage "no output file specified" - -[[ "${2:e}" != "gif" ]] && usage "output file must have a .gif file extension" - -[[ "$1" != "%d.png" ]] && [[ ! -f "$1" ]] && usage "input file not found" - -# make links -tmp_pref="make-gif" -tmp_pref="${2:h}/$tmp_pref" - -echo $tmp_pref - -while [[ -f "${tmp_pref}-palette.png" ]] || [[ -f "${tmp_pref}-in" ]]; do - tmp_pref="${tmp_pref}-1" -done - -ln -s "${1:a}" "${tmp_pref}-in" \ - || abort "could not write to output dir" - -# get output height using aspect ratio -local height -local as - -height=-1 -ffprobe -loglevel -8 -print_format json -show_streams "${tmp_pref}-in" \ - | grep -m 1 display_aspect_ratio | grep -Eo '[0-9]+:[0-9]+' \ - | IFS=':' read -A as -[[ "$as" != "" ]] && let "height = ${width} * ${as[2]} / ${as[1]}" - -# 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 - -[[ $fferr ]] && abort -rm_tmps - -# gifsicle -if [[ -f "$2" && $gsic ]]; then - local gsictmp="$2.out" - while [[ -f "$gsictmp" ]]; do - gsictmp="$gsictmp.out" - done - echo "optimising..." - gifsicle -O3 -i "$2" -o "$gsictmp" - [[ $? -eq 0 ]] && rm -f "$2" && mv "$gsictmp" "$2" -fi +../submodules/make-gif/make-gif
\ No newline at end of file diff --git a/.config/init/submodules/make-gif b/.config/init/submodules/make-gif new file mode 160000 +Subproject cb26d5ddb9dc81143f95690c940efb2bfe15cf2 |