An M3U (Moving Picture Experts Group Audio Layer 3 Uniform Resource Locator) file is essentially a plain text index. It does not host any video content itself. Instead, it serves as a map for media players, pointing them to the exact server locations where live video feeds are broadcasted. File Structure
This is arguably the most well-known and comprehensive collection of publicly available IPTV streams. It is curated by a massive open-source community and strictly adheres to using only legal, publicly accessible streams. cable tv m3u playlist