For IPTV or web radio, the duration in the #EXTINF line is usually set to -1 because the length is unknown.
If you are looking to create a "useful" version of this file, it usually contains paths to local files or URLs for internet radio/IPTV streams. Structure of a "Useful" M3U File 140.m3u
Starts with #EXTINF: , followed by the duration (in seconds) and the title. File Path: The actual location of the media. Example Template For IPTV or web radio, the duration in
If you have 140 files to add, you can use the Command Prompt (Windows) to list them quickly: dir /b *.mp3 > 140.m3u (Note: This creates a basic M3U without the Extended metadata lines, but most players will still read it.) How to Play It For IPTV or web radio