first commit

profiles/desktop/.local/bin/video_extract

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+usage() {
+    echo "Usage: $(basename "$0") file_name start end"
+}
+
+extract_images() {
+    local video_file=$1
+    local start=$2
+    local end=$3
+    local start_in_seconds
+    local end_in_seconds
+    local date_diff
+
+    start_in_seconds=$(date --date "${start}" +%s)
+    end_in_seconds=$(date --date "${end}" +%s)
+    date_diff=$((end_in_seconds - start_in_seconds))
+
+    ffmpeg -ss "${start}" -t ${date_diff} -i "${video_file}" -qscale:v 2 output_%03d.jpg
+}
+
+if [[ $# -ne 3 ]]; then
+    usage
+    exit 0
+fi
+
+if ! command -v ffmpeg >/dev/null 2>&1; then
+    echo "ffmpeg: command not found"
+    exit 1
+fi
+
+FILENAME=$1
+START=$2
+END=$3
+
+if [ ! -f "${FILENAME}" ]; then
+    echo "${FILENAME}: not a file"
+    exit 1
+fi
+if ! { [[ ${START} =~ ^([0-9]{2}:)?[0-9]{2}:[0-9]{2}$ ]] && date -d "${START}" >/dev/null 2>&1; }; then
+    echo "${START}: incorrect time"
+    exit 1
+fi
+if ! { [[ ${END} =~ ^([0-9]{2}:)?[0-9]{2}:[0-9]{2}$ ]] && date -d "${END}" >/dev/null 2>&1; }; then
+    echo "${END}: incorrect time"
+    exit 1
+fi
+
+extract_images "${FILENAME}" "${START}" "${END}"