Hls-player [2025]
The player requests a URL pointing to a master playlist. This master file does not contain video. Instead, it lists — the same video encoded at different bitrates, resolutions, and codecs.
def get_next_bitrate(buffer_s, throughput_bps): if buffer_s < 2.0: return lowest_bitrate if buffer_s > 10.0 and throughput_bps > current_bitrate * 1.5: return higher_bitrate return current_bitrate hls-player
The player monitors the "health" of the stream and switches quality dynamically. A robust HLS player tracks: The player requests a URL pointing to a master playlist
import React, useEffect, useRef from 'react'; import videojs from 'video.js'; import 'video.js/dist/video-js.css'; throughput_bps): if buffer_s <
+------------------+ Fetches +--------------------+ | | --------------> | Master Playlist | (Resolution/Bitrate options) | | +--------------------+ | | Selects | Media Playlist | (Target quality level) | HLS Player | --------------> +--------------------+ | (Client Side) | | Video Segments | (.ts / .m4s media chunks) | | +--------------------+ | | Decodes +--------------------+ | | --------------> | Continuous Display | (Seamless playback) +------------------+ +--------------------+ 1. Fetching the Index Files (Playlists)
Three common approaches: