@discordjs/voice库运行无报错 机器人进语音频道无声音求助

代码层面可直接修复的问题 #

• 缺失ytdl依赖导入：你使用了ytdl()拉取音频流，但代码中没有对应导入语句，先安装ytdl-core，再在代码头部添加导入：

const ytdl = require('ytdl-core');

• 重复声明播放器实例：文件顶部已经初始化了全局播放器const player = createAudioPlayer()，但在播放逻辑块中又重复声明了局部player变量，导致资源调度异常，删除if(video)块内的const player = createAudioPlayer()这一行即可。
• 音频资源配置不完整：@discordjs/voice默认不会自动适配ytdl返回的流格式，需要修改createAudioResource的配置，同时要先从库中导入StreamType：
  首先修改导入语句：

const { joinVoiceChannel, createAudioPlayer, createAudioResource, AudioPlayerStatus, StreamType } = require('@discordjs/voice');

再修改音频资源创建逻辑：

const resource = createAudioResource(stream, {
  inlineVolume: true,
  inputType: StreamType.Arbitrary
})

• 语音连接参数缺失：加入频道时显式指定机器人的语音状态，避免权限导致的静音问题，修改joinVoiceChannel配置：

var connection = joinVoiceChannel({
    channelId: voiceChannel.id,
    guildId: voiceChannel.guild.id,
    adapterCreator: msg.channel.guild.voiceAdapterCreator,
    selfDeaf: false,
    selfMute: false
});

环境配置排查项 #

• 确认Discord开发者面板中，你的机器人已经开启GUILD_VOICE_STATES网关意图，无该意图会导致语音状态同步失败，无法输出音频。
• 确认已安装全套音频依赖：执行npm install @discordjs/opus ffmpeg-static安装必需的解码依赖，二者缺一不可。
• 若修改后仍无声音，可调整ytdl的缓冲区配置，避免流加载中断：

const stream = ytdl(video.url, { filter: 'audioonly', highWaterMark: 1 << 25 });

修复后完整代码 #

const ytSearch = require('yt-search');
const ytdl = require('ytdl-core');
const { joinVoiceChannel, createAudioPlayer, createAudioResource, AudioPlayerStatus, StreamType } = require('@discordjs/voice');
const player = createAudioPlayer()
module.exports = {
    name: 'play',
    description: 'Joins and plays a video from youtube',
    execute: async (client, msg, arg, Discord) => {
        const voiceChannel = msg.member.voice.channel;

        if (!voiceChannel) return msg.channel.send('You need to be in a channel to execute this command!');
        const permissions = voiceChannel.permissionsFor(msg.client.user);
        if (!permissions.has('CONNECT')) return msg.channel.send('I don\'t have permission to join this voice channel');
        if (!permissions.has('SPEAK')) return msg.channel.send('I don\'t have permission to speak in this voice channel');
        if (!arg.length) return msg.channel.send('You need to specify the song you want to play');

        var connection = joinVoiceChannel({
            channelId: voiceChannel.id,
            guildId: voiceChannel.guild.id,
            adapterCreator: msg.channel.guild.voiceAdapterCreator,
            selfDeaf: false,
            selfMute: false
        });

        const videoFinder = async (query) => {
            const videoResult = await ytSearch(query);
            return (videoResult.videos.length > 1) ? videoResult.videos[0] : null;
        }
        const keywords = arg.join(' ')
        const video = await videoFinder(keywords);

        if (video) {
            const stream = ytdl(video.url, { filter: 'audioonly', highWaterMark: 1 << 25 });
            const resource = createAudioResource(stream, {
                inlineVolume: true,
                inputType: StreamType.Arbitrary
            })
            player.play(resource)
            connection.subscribe(player);
            await msg.reply(`:thumbsup: Now Playing ***${video.title}***`)
        }
        else{
            msg.reply('No Results Found')
        }
    }
}

内容的提问来源于stack exchange，提问作者Aryan Gagare