// ==UserScript==
// @name         哔哩哔哩音频单声道化
// @namespace    qwq0
// @version      0.1
// @description  舒适的使用耳机观看左右声道响度不同的视频
// @author       QwQ~
// @match        https://www.bilibili.com/video/*
// @match        https://www.bilibili.com/medialist/play/*
// @match        https://www.bilibili.com/list/*
// @match        https://www.bilibili.com/bangumi/play/*
// @match        https://live.bilibili.com/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==
setTimeout(function ()
{
"use strict";
/**
* @type {HTMLDivElement}
*/
let videoHolder = null;
/**
* @type {HTMLVideoElement}
*/
let video = null;
let audioContext = new AudioContext();
/**
* @type {MediaElementAudioSourceNode}
*/
let mediaSource = null;
let middleNode = audioContext.createChannelMerger(1);
middleNode.connect(audioContext.destination);
setInterval(() =>
{
let nowVideoHolder = document.getElementsByClassName("bilibili-player-video")[0] ||
document.getElementsByClassName("bpx-player-video-wrap")[0] ||
document.getElementById("live-player") ||
document.getElementsByClassName("container-video")[0];
if (!nowVideoHolder)
return;
let nowVideo = nowVideoHolder.getElementsByTagName("video")[0];
if (nowVideo && video != nowVideo)
{
videoHolder = nowVideoHolder;
video = nowVideo;
mediaSource = audioContext.createMediaElementSource(video);
mediaSource.connect(middleNode);
console.log("[哔哩哔哩音频单声道化]", "已单声道化当前播放的视频")
}
}, 1000);
}, 500);