M3U8

This M3U8 module provides functionality for working with m3u8 playlists in HTTP Live Streaming (HLS).

In HLS, a Playlist can be one of two types:

• A Master Playlist, which defines a set of Variant Streams using tags.
• A Media Playlist, which lists individual media segments.

The following tags and their corresponding classes or properties are supported:

Basic Tags:

• EXTM3U: Represents the start of a playlist (handled by the Playlist class).
• EXT-X-VERSION: Indicates the protocol compatibility version (Playlist#version).

Media Playlist Tags:

• EXT-X-TARGETDURATION: The maximum segment duration (Playlist#target).
• EXT-X-MEDIA-SEQUENCE: The sequence number of the first segment (Playlist#sequence).
• EXT-X-DISCONTINUITY-SEQUENCE: The discontinuity sequence number (Playlist#discontinuity_sequence).
• EXT-X-ENDLIST: Indicates that no more segments will be added (Playlist.footer).
• EXT-X-PLAYLIST-TYPE: Specifies the playlist type (e.g., VOD or EVENT; Playlist#type).
• EXT-X-I-FRAMES-ONLY: Marks an I-frame only playlist (Playlist#iframes_only).
• EXT-X-ALLOW-CACHE: Indicates whether caching is allowed (Playlist#cache, deprecated in protocol version 7).

Media Segment Tags:

• EXTINF: Provides segment duration and an optional comment (SegmentItem).
• EXT-X-BYTERANGE: Specifies a sub-range of a media segment (ByteRange).
• EXT-X-DISCONTINUITY: Marks a discontinuity between segments (DiscontinuityItem).
• EXT-X-KEY: Contains encryption key attributes (KeyItem).
• EXT-X-MAP: Specifies the media initialization section (MapItem).
• EXT-X-PROGRAM-DATE-TIME: Associates an absolute date and time with a segment (TimeItem).
• EXT-X-DATERANGE: Associates a date range with a set of attributes (DateRangeItem).

Master Playlist Tags:

• EXT-X-MEDIA: Specifies alternative renditions (MediaItem).
• EXT-X-STREAM-INF: Defines a Variant Stream (PlaylistItem with PlaylistItem#iframe set to false).
• EXT-X-I-FRAME-STREAM-INF: Defines an I-frame only Variant Stream (PlaylistItem with PlaylistItem#iframe set to true).
• EXT-X-SESSION-DATA: Contains session-level metadata (SessionDataItem).
• EXT-X-SESSION-KEY: Contains session-level encryption key attributes (SessionKeyItem).

Common Tags (Applicable to both Media and Master Playlists):

• EXT-X-INDEPENDENT-SEGMENTS: Indicates that each segment can be decoded independently (Playlist#independent_segments).
• EXT-X-START: Specifies the preferred start point for playback (PlaybackStart).