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mp4player.js

v0.0.2

Published

MP4 player using Media Source Extensions

Downloads

2

Readme

mp4player.js

Fetch APIでmp4を読み込み,fragmented mp4に変換しながら Media Source Extensions APIで再生するやつ.

以下の問題を回避するものです.

  • video タグの srcにURLを指定 → 認証や前処理に制限がある
  • FetchやXHRで読み込んでblobを再生 → 読み込み完了まで再生できない
  • MPEG-DASHなどFragmented mp4にする → 事前の変換が必要

Test page : https://binzume.github.io/mp4player-js/demo/index.html

Usage

demo/index.html

    let videoEl = document.querySelector('video');
    let videoUrl = 'videos/bunny.mp4';
    let options = {
        opener: {
            async open(pos) {
                return (await fetch(videoUrl, pos ? { headers: { 'range': 'bytes=' + pos + '-' } } : {})).body.getReader();
            }
        }
    };
    new MP4Player(videoEl).setBufferedReader(new BufferedReader(options));

シークするためにはRangeリクエスト必須です.

シークが不要な場合は,以下のようにread()メソッドを持つReaderを渡してください.

    let videoEl = document.querySelector('video');
    let videoUrl = 'videos/bunny.mp4';
    let options = {
        reader: (await fetch(videoUrl)).body.getReader()
    };
    new MP4Player(videoEl).setBufferedReader(new BufferedReader(options));

npm

https://www.npmjs.com/package/mp4player.js

npm i mp4player.js
node
> const {MP4Player, BufferedReader} = require('mp4player.js');

TODO

  • パフォーマンスの改善
  • バッファ管理

License

MIT License