Knowing if you are using a media manager (like Plex/Sonarr) or a command-line tool will help me give you the exact syntax.

Use unique identifiers (like a URL or a specific file hash).

Before downloading file_abc , the script reads watched.txt to see if file_abc is listed.

Ensure no other program is currently writing to the text file when you start your download script.

You can manually add IDs to this file if you already have the videos and want to skip them. 2. Custom Python Scripts

Even if you add new links to urls_to_get.txt later, the command will only download the new ones because it cross-references with watched.txt . 🔍 Troubleshooting

Keep the file in the same directory as your download script. 🚀 Step-by-Step Implementation (yt-dlp Example)

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