Creates first version of playlists.sh bash file that downloads new videos from set YouTube playlists

Requires yt-dlp and will check (and update) playlists.archive to make sure it doesn't download duplicates. Make sure to update the arrays with playlist labels and YouTube hash IDs.

Shell/playlists.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+NOW=`date +"%Y-%m-%d %T"`
+
+# move to NAS temp directory
+cd "/mnt/media/tmp"
+
+# count existing MP4 files
+EXISTING=$(find ./ -maxdepth 1 -type f -name "*.mp4" -printf x | wc -c)
+
+# download playlist updates
+declare -a LABELS=("..." "..." "...")
+declare -a LISTS=("Hash1" "Hash2" "Hash3")
+length=${#LISTS[@]}
+
+for (( i=0; i<${length}; i++ )); do
+    echo "Checking ${LABELS[$i]} (${LISTS[$i]}) for new videos..." >> downloads.log
+    yt-dlp "${LISTS[$i]}" --no-flat-playlist --force-download-archive --download-archive playlists.archive --throttled-rate 2M --embed-thumbnail --write-thumbnail --convert-thumbnails png -o "%(channel)s - %(title)s [%(upload_date)s] [%(id)s].%(ext)s" -f bv*[ext=mp4]+ba[ext=m4a]/b[ext=mp4]/bv*+ba/b >>ytdlp.log 2>&1
+    echo "Done checking ${LABELS[$i]} for new videos." >> downloads.log
+done
+echo "Finished running yt-dlp"
+
+# convert any WEBP thumbs that didn't make it to PNG
+for FILE in *.webp; do
+    if [ "$FILE" ]; then
+        break
+    fi
+    dwebp "$FILE" -o "${FILE%.*}".png;
+done
+
+# count new total of MP4 files and get difference
+TOTAL=$(find ./ -maxdepth 1 -type f -name "*.mp4" -printf x | wc -c)
+ADDED=$((TOTAL-EXISTING))
+
+# write results to log
+printf '[%s] %s videos downloaded\n' "$NOW" "$ADDED" >> downloads.log