Many "broken" M3U links actually work, but they require a specific referrer or authorization header that a simple right-click cannot provide.
A high-end IPTV player for Android/Fire TV that excels at handling large M3U files. Common Troubleshooting SeanRiggs/Automated-Playlist-EPG-Downloader ... - GitHub fixed download m3u file from url
import requests from urllib.parse import urljoin, urlparse Many "broken" M3U links actually work, but they
grep -i "<html" playlist.m3u