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自分はBot commands frameworkの書き方に詳しくないので解説はできませんが、
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このサンプルコードで動かすことはできました。
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追記(1)
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自分がBot commands frameworkを使えないので
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全部on_messageで処理します
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あとこのサンプルソースほぼ内容は上記リンクと一緒で
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上記リンクの機能縮小版になります（_p 曲名orURL:joinして再生開始/_dis:ボイスdisconnect）
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```python
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import asyncio
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import discord
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import youtube_dl
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from discord.ext import commands
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#この辺は何やってるかわからないけどそのまま引用
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# Suppress noise about console usage from errors
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youtube_dl.utils.bug_reports_message = lambda: ''
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ytdl_format_options = {
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'format': 'bestaudio/best',
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'outtmpl': '%(extractor)s-%(id)s-%(title)s.%(ext)s',
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'restrictfilenames': True,
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'noplaylist': True,
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'nocheckcertificate': True,
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'ignoreerrors': False,
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'logtostderr': False,
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'quiet': True,
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'no_warnings': True,
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'default_search': 'auto',
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# bind to ipv4 since ipv6 addresses cause issues sometimes
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'source_address': '0.0.0.0'
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}
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ffmpeg_options = {
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'options': '-vn'
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}
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ytdl = youtube_dl.YoutubeDL(ytdl_format_options)
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class YTDLSource(discord.PCMVolumeTransformer):
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def __init__(self, source, *, data, volume=0.5):
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super().__init__(source, volume)
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self.data = data
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self.title = data.get('title')
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self.url = data.get('url')
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@classmethod
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async def from_url(cls, url, *, loop=None, stream=False):
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loop = loop or asyncio.get_event_loop()
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data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url, download=not stream))
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if 'entries' in data:
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# take first item from a playlist
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data = data['entries'][0]
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filename = data['url'] if stream else ytdl.prepare_filename(data)
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return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)
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bot = commands.Bot(command_prefix=commands.when_mentioned_or("_"),
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description='Relatively simple music bot example')
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@bot.event
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async def on_ready():
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print('Logged in as {0} ({0.id})'.format(bot.user))
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print('------')
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#この辺は何やってるかわからないけどそのまま引用ここまで
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@bot.event
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async def on_message(message):
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if message.content.startswith("_p "):
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await message.author.voice.channel.connect()#vc接続
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message.content=message.content.replace("_p ","")
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async with message.channel.typing():
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player = await YTDLSource.from_url(message.content, loop=asyncio.get_event_loop())#多分再生用の素材を作ってるとこ
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message.author.guild.voice_client.play(player, after=lambda e: print(
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'Player error: %s' % e) if e else None)#再生してるとこ
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await message.channel.send('Now playing: {}'.format(player.title)) #再生中のタイトルをsend
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if message.content.startswith("_dis"):
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await message.author.guild.voice_client.disconnect() #VC切断
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bot.run("TOKEN")
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```
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