为什么在Heroku上不和谐的音乐不起作用？

如何解决为什么在Heroku上不和谐的音乐不起作用？

我为discord.py机器人做了一个音乐功能，当我从机器上运行它时一切正常，但是当我将其部署到heroku时，play命令停止工作。

我尝试过的事情：

• 在线搜索解决方案
• 调整代码以查看我是否可以找出heroku出了什么问题

预期结果： 我希望该机器人能够下载并使用youtube-dl和ffmpeg播放音乐

实际结果： 由于某种原因，它会将某个文件另存为一个很长的名称，看起来有点像youtube-dl选项。 这是完整的回溯：

2020-09-19T09:59:56.637094+00:00 app[worker.1]: Downloading audio
2020-09-19T09:59:57.362517+00:00 app[worker.1]: ERROR: unable to open for writing: [Errno 36] File name too long: 'videoplayback-videoplaybackexpire=1600531195&ei=mtZlX7qyOcyfhwbXz42ICw&ip=3.80.84.128&id=o-ACr3otvjR8X3AKbcspCs4ohKJozzHs5FeSiCdpvKGRix&itag=248&aitags=133,134,135,136,137,160,242,243,244,247,248,278,394,395,396,397,398,399&source=youtube&requiressl=yes&mh=u9&mm=31,26&mn=sn-p5qlsndk,sn-vgqsrnel&ms=au,onr&mv=m&mvi=5&pl=12&initcwndbps=886250&vprv=1&mime=video_webm&gir=yes&clen=22705009&dur=186.unknown_video.part'
2020-09-19T09:59:57.363053+00:00 app[worker.1]: Ignoring exception in command play:
2020-09-19T09:59:57.366683+00:00 app[worker.1]: Traceback (most recent call last):
2020-09-19T09:59:57.366721+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/downloader/http.py",line 250,in download
2020-09-19T09:59:57.366722+00:00 app[worker.1]: ctx.tmpfilename,ctx.open_mode)
2020-09-19T09:59:57.366724+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/utils.py",line 2054,in sanitize_open
2020-09-19T09:59:57.366724+00:00 app[worker.1]: stream = open(encodeFilename(filename),open_mode)
2020-09-19T09:59:57.366762+00:00 app[worker.1]: OSError: [Errno 36] File name too long: 'videoplayback-videoplaybackexpire=1600531195&ei=mtZlX7qyOcyfhwbXz42ICw&ip=3.80.84.128&id=o-ACr3otvjR8X3AKbcspCs4ohKJozzHs5FeSiCdpvKGRix&itag=248&aitags=133,onr&mv=m&mvi=5&pl=12&initcwndbps=886250&vprv=1&mime=video_webm&gir=yes&clen=22705009&dur=186.unknown_video.part'
2020-09-19T09:59:57.366779+00:00 app[worker.1]:
2020-09-19T09:59:57.366779+00:00 app[worker.1]: During handling of the above exception,another exception occurred:
2020-09-19T09:59:57.366780+00:00 app[worker.1]:
2020-09-19T09:59:57.366795+00:00 app[worker.1]: Traceback (most recent call last):
2020-09-19T09:59:57.366863+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/core.py",line 85,in wrapped
2020-09-19T09:59:57.366863+00:00 app[worker.1]: ret = await coro(*args,**kwargs)
2020-09-19T09:59:57.366865+00:00 app[worker.1]: File "/app/cogs/music.py",line 146,in play
2020-09-19T09:59:57.366866+00:00 app[worker.1]: ydl.download([url])
2020-09-19T09:59:57.366885+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 2019,in download
2020-09-19T09:59:57.366886+00:00 app[worker.1]: url,force_generic_extractor=self.params.get('force_generic_extractor',False))
2020-09-19T09:59:57.366887+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 808,in extract_info
2020-09-19T09:59:57.366888+00:00 app[worker.1]: return self.process_ie_result(ie_result,download,extra_info)
2020-09-19T09:59:57.366905+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 863,in process_ie_result
2020-09-19T09:59:57.366906+00:00 app[worker.1]: return self.process_video_result(ie_result,download=download)
2020-09-19T09:59:57.366907+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 1644,in process_video_result
2020-09-19T09:59:57.366908+00:00 app[worker.1]: self.process_info(new_info)
2020-09-19T09:59:57.366923+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 1926,in process_info
2020-09-19T09:59:57.366923+00:00 app[worker.1]: success = dl(filename,info_dict)
2020-09-19T09:59:57.366925+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 1865,in dl
2020-09-19T09:59:57.366925+00:00 app[worker.1]: return fd.download(name,info)
2020-09-19T09:59:57.366941+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/downloader/common.py",line 366,in download
2020-09-19T09:59:57.366941+00:00 app[worker.1]: return self.real_download(filename,info_dict)
2020-09-19T09:59:57.366943+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/downloader/http.py",line 342,in real_download
2020-09-19T09:59:57.366943+00:00 app[worker.1]: return download()
2020-09-19T09:59:57.366959+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/downloader/http.py",line 255,in download
2020-09-19T09:59:57.366959+00:00 app[worker.1]: self.report_error('unable to open for writing: %s' % str(err))
2020-09-19T09:59:57.366961+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/downloader/common.py",line 165,in report_error
2020-09-19T09:59:57.366961+00:00 app[worker.1]: self.ydl.report_error(*args,**kargs)
2020-09-19T09:59:57.366991+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 625,in report_error
2020-09-19T09:59:57.366992+00:00 app[worker.1]: self.trouble(error_message,tb)
2020-09-19T09:59:57.366992+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py",line 595,in trouble
2020-09-19T09:59:57.366992+00:00 app[worker.1]: raise DownloadError(message,exc_info)
2020-09-19T09:59:57.366996+00:00 app[worker.1]: youtube_dl.utils.DownloadError: ERROR: unable to open for writing: [Errno 36] File name too long: 'videoplayback-videoplaybackexpire=1600531195&ei=mtZlX7qyOcyfhwbXz42ICw&ip=3.80.84.128&id=o-ACr3otvjR8X3AKbcspCs4ohKJozzHs5FeSiCdpvKGRix&itag=248&aitags=133,onr&mv=m&mvi=5&pl=12&initcwndbps=886250&vprv=1&mime=video_webm&gir=yes&clen=22705009&dur=186.unknown_video.part'
2020-09-19T09:59:57.367016+00:00 app[worker.1]:
2020-09-19T09:59:57.367017+00:00 app[worker.1]: The above exception was the direct cause of the following exception:
2020-09-19T09:59:57.367017+00:00 app[worker.1]:
2020-09-19T09:59:57.367019+00:00 app[worker.1]: Traceback (most recent call last):
2020-09-19T09:59:57.367051+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/bot.py",line 903,in invoke
2020-09-19T09:59:57.367051+00:00 app[worker.1]: await ctx.command.invoke(ctx)
2020-09-19T09:59:57.367053+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/core.py",line 855,in invoke
2020-09-19T09:59:57.367053+00:00 app[worker.1]: await injected(*ctx.args,**ctx.kwargs)
2020-09-19T09:59:57.367070+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.6/site-packages/discord/ext/commands/core.py",line 94,in wrapped
2020-09-19T09:59:57.367070+00:00 app[worker.1]: raise CommandInvokeError(exc) from exc
2020-09-19T09:59:57.367092+00:00 app[worker.1]: discord.ext.commands.errors.CommandInvokeError: Command raised an exception: DownloadError: ERROR: unable to open for writing: [Errno 36] File name too long: 'videoplayback-videoplaybackexpire=1600531195&ei=mtZlX7qyOcyfhwbXz42ICw&ip=3.80.84.128&id=o-ACr3otvjR8X3AKbcspCs4ohKJozzHs5FeSiCdpvKGRix&itag=248&aitags=133,onr&mv=m&mvi=5&pl=12&initcwndbps=886250&vprv=1&mime=video_webm&gir=yes&clen=22705009&dur=186.unknown_video.part'

我是通过heroku logs获得的。

我的代码：

import discord
from discord.ext import commands
import youtube_dl
from helpers.yt_searcher import search
from discord.utils import get
import shutil
import os


class Music(commands.Cog):
    def __init__(self,bot):
        self.bot = bot
        self.queues = {}
    
    @commands.command(aliases=['p'])
    async def play(self,ctx,*,search_query):
        url = search(search_query)
        
        def check_queue():
            Queue_infile = os.path.isdir("./Queue")

            if Queue_infile is True:
                DIR = os.path.abspath(os.path.realpath("Queue"))

                length = len(os.listdir(DIR))

                still_q = length - 1

                try:
                    first_file = os.listdir(DIR)[0]
                
                except:
                    print('No more queued songs.')
                    self.queues.clear()
                    return
                
                main_loc = os.path.dirname(os.path.realpath(__file__))

                song_path = os.path.abspath(os.path.realpath("Queue") + "\\" + first_file)

                if length != 0:
                    print('Song finished,playing next in queue.')

                    print(f"Songs left in queue: {still_q}")

                    song_there = os.path.isfile("song.mp3")

                    if song_there:
                        os.remove("song.mp3")
                    
                    shutil.move(song_path,main_loc)

                    for file in os.listdir('./'):
                        if file.endswith(".mp3"):
                            os.rename(file,'song.mp3')

                    voice.play(discord.FFmpegPCMAudio('song.mp3'),after=lambda e: check_queue())
                
                    voice.source = discord.PCMVolumeTransformer(voice.source)

                    voice.source.volume = 0.3

                else:
                    self.queues.clear()

                    return
                

            else:
                self.queues.clear()

                print('No songs left in queue.')
        
        song_there = os.path.isfile("song.mp3")

        try:
            if song_there:
                os.remove("song.mp3")
                self.queues.clear()

        except PermissionError as e:
            print("Trying to delete song file but it is being played.")

            await ctx.channel.send(':x: Error: music still playing.')

            return

        Queue_infile = os.path.isdir('./Queue')

        try:
            Queue_folder = "./Queue"

            if Queue_infile is True:
                print('Removed old queue folder.')

                shutil.rmtree(Queue_folder)
            
        except:
            print('No old queue folder.')
        

        voice = get(self.bot.voice_clients,guild=ctx.guild)

        ytdl_opts = {
            'format': 'bestaudio/best','quiet': True,\
            'postprocessors': [{
                'key': 'FFmpegExtractAudio','preferredcodec': 'mp3','preferredquality': '192'
            }],}

        with youtube_dl.YoutubeDL(ytdl_opts) as ydl:
            print('Downloading audio')

            ydl.download([url])
        
        name = ""

        for file in os.listdir('./'):
            if file.endswith('.mp3'):
                name = file

                print(f"Renamed file {name}")

                os.rename(file,'song.mp3')
            
        voice.play(discord.FFmpegPCMAudio('song.mp3'),after=lambda e: check_queue())
        voice.source = discord.PCMVolumeTransformer(voice.source)
        voice.source.volume = 0.3

        nname = name.rsplit("-",2)

        await ctx.channel.send(f":musical_note: Playing {nname[0]}")


def setup(bot):
    bot.add_cog(Music(bot))

这些都在齿轮中。

解决方法

通过观看此仓库获得帮助，您必须在heroku以及FFmpeg和Opus库上安装一些构建包。

Music Bot Repo