bilibili/flv.js
Flv.js
flv.js is a JavaScript library and HTML5 Media Source Extension wrapper designed to play FLV video and live streams in web browsers. It enables the rendering of FLV content within a standard web video element without the need for external plugins.
The project focuses on real-time transmuxing, converting FLV container data into fragmented MP4 segments to ensure browser compatibility. It includes specific implementations for low-latency live streaming and cross-origin video loading via CORS-compliant server headers.
The library provides capabilities for segmented media playback, media position seeking through range requests, and buffer-based latency control. It also includes a monitoring surface for tracking playback statistics, frame drops, and system logs.
Features
- Media Source Extension Wrappers - Provides a wrapper for the browser Media Source Extensions API to decode and render fragmented MP4 and FLV content.
- MSE Video Rendering - Utilizes browser Media Source Extensions to render FLV content without external plugins.
- FLV Playback - Enables the decoding and playback of FLV video content directly within HTML5 elements.
- Media Buffer Managers - Ships a system to control data loading using lazy thresholds and automatic buffer clearing to maintain low memory usage.
- Low Latency Players - Implements a video playback tool designed for real-time streaming with configurable buffers to minimize delay.
- Real-Time Media Streaming - Supports receiving and distributing live audio and video streams with low latency.
- Real-Time Transmuxing - Converts FLV container data into fragmented MP4 segments in real time for browser compatibility.
- Live Video Rendering - Renders live video content from network sources using Media Source Extensions to eliminate plugins.
- Low-Latency Streaming - Streams real-time video content to browsers while balancing stability and minimal delay.
- Playback Latency Configurations - Implements buffer configurations to balance real-time stream delay with playback stability.
- HTML5 Media Players - A JavaScript library using Media Source Extensions to play FLV video and live streams in HTML5 browsers.
- FLV HTML5 Players - Plays FLV video files and streams in web browsers using media source extensions.
- Multipart Stream Playback - Loads and plays a sequence of video segments from a playlist for seamless playback.
- Segmented - Processes playlists of multiple media source segments to enable continuous video playback.
- Playhead Seeking - Provides mechanisms to jump to precise timestamps within a video stream.
- Segmented Media Playback - Processes playlists of multiple video segments to create a seamless viewing experience.
- Cross-Origin - Loads and plays video streams from different servers by managing browser security restrictions.
- Byte-Range Requesting - Uses HTTP range headers to fetch specific byte segments for precise seeking within media files.
- Playback Monitoring - Tracks playback performance, frame drops, and system logs in real time.
- Media Buffer Lazy Loading - Implements a lazy-loading strategy for video segments to optimize memory usage during playback.
- Media and Audio - Plays FLV video streams without requiring Flash.
- Media and Communication - HTML5 FLV video player implemented in pure JavaScript.
