AnyMediaPlayer — One app. All your media.
Home / Guides / M3U format

M3U and M3U8 playlist format explained

Published and technically reviewed 14 August 2026 · MRG's Solutions, UAB

An extended M3U playlist is a UTF-8 text file that normally begins with #EXTM3U. Each media item is described by an #EXTINF line followed by its media URL on the next non-comment line.

Minimal safe example

#EXTM3U
#EXTINF:-1 tvg-id="example.channel" group-title="Demo",Example channel
https://media.example/stream.m3u8

-1 means the duration is unknown or continuous. Quoted attributes carry application-specific metadata; the text after the comma is the display name.

M3U versus M3U8 and HLS

.m3u8 conventionally indicates UTF-8 text. An M3U8 file may be a list of channel URLs, or it may be an HLS manifest containing protocol tags such as #EXT-X-VERSION, #EXT-X-STREAM-INF and #EXT-X-TARGETDURATION. HLS syntax is standardized separately; do not rewrite its tags as IPTV channel metadata.

Common problems

  • A UTF-8 byte-order mark or mixed line endings confusing older parsers.
  • An #EXTINF record with no following URL.
  • Commas or quotation marks inserted into attributes incorrectly.
  • Duplicate URLs, expired tokens or secret-bearing URLs copied into public files.
  • Using tvg-name as a substitute for a stable XMLTV channel identifier.

Sources