Updated yt-dlp to 2025.09.23
If you cannot open the app because of 'unidentified developer': Right click on the app and then select 'Open'. A dialog will appear. Click again on 'Open'. From now on you can always open the app without needing to right click on it. More info: Apple Support
If you're on macOS Sequoia or newer this might not work anymore. Either go to 'System Settings', 'Privacy & Security' to allow the app.
Or do it in Terminal:
sudo xattr -r -d com.apple.quarantine /Applications/Youtube\ Downloader.app/