For IPTV or web radio, the duration in the #EXTINF line is usually set to -1 because the length is unknown.
A .m3u file is a plain text playlist format used by media players like VLC, iTunes, and Winamp to queue up music or video streams. 140.m3u
To be recognized by most players, the file should follow the format. Each entry consists of two lines: For IPTV or web radio, the duration in