feat: compress

.gitignore

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+*/

compress

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+#!/bin/bash -eu
+
+XARGS=(xargs -0 -P"$(nproc --ignore=4)" -I'{}' bash -c)
+function compress() {
+    local cmd files total newdir progress=0
+
+    files=("$1"/*)
+    total="${#files[@]}"
+    newdir="$(basename "$1")_1080p"
+    cmd=(magick '{}' -resize x1080 "$newdir/\$(basename '{}')" '>&2;' echo)
+    mkdir -p "$newdir"
+    while read -r; do
+        echo $((++progress * 100 / total))
+    done < <(printf '%s\0' "${files[@]}" | "${XARGS[@]}" "${cmd[*]}")
+}
+
+if [ $# = 0 ]; then
+    mapfile -t < <(zenity --file-selection --multiple --directory --separator='//' | sed 's // \n g')
+    set -- "${MAPFILE[@]}"
+fi
+
+for DIR in "$@"; do
+    if [ -d "$DIR" ] && [ -x "$DIR" ]; then
+        compress "$DIR" | zenity --progress --title="$DIR" --auto-close --time-remaining
+    fi
+done
+zenity --info --text=DONE

test.sh

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+#!/bin/bash -e
+
+mkdir test
+
+magick -size 3840x2160 xc:black test/000.png
+
+printf '%s\n' {001..127} | xargs -P0 -I'{}' cp test/000.png test/'{}'.png