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• aacsbr : optimize sine level addition

  3 juin 2012, par Michael Niedermayer

  aacsbr : optimize sine level addition

• Discord bot stops playing music at a certain iteration

  3 mai 2023, par denisnumb

  I'm using the following code to play music in a discord voice channel :

  


  import discord
import asyncio
from yt_dlp import YoutubeDL

YDL_OPTIONS = {
    'format': 'bestaudio/best', 
}

FFMPEG_OPTIONS = {
    'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 
    'options': '-vn'
}

bot = discord.Client(intents=discord.Intents.all())

async def get_source_url(url: str) -> str:
    with YoutubeDL(YDL_OPTIONS) as ydl:
        return ydl.extract_info(url, download=False).get('url')

@bot.slash_command(name='play')
async def __play(ctx, url: str) -> None:
    source = await get_source_url(url)
    vc = await ctx.author.voice.channel.connect()
    vc.play(discord.FFmpegPCMAudio(source=source, **FFMPEG_OPTIONS))

    while vc.is_playing() or vc.is_paused():
        await asyncio.sleep(1)

    await vc.disconnect()

bot.run('TOKEN')


  


  The principle of operation is as follows :

  


  


  1. The /play command handler receives a url argument, in the form of a link to a live stream from YouTube : https://youtu.be/jfKfPfyJRdk (or any other video)

     


  


  2. The link is passed to the get_source_url function, which, using the yt-dlp library, returns a direct link to the sound from the video

     


  


  3. The direct link is passed via discord.FFmpegPCMAudio to the ffmpeg program, which then returns audio bytes for transmission to the discord voice channel via the vc.play method

     


  


  


  ---

  


  Problem :

  


  Bot is hosted on the virtual hosting server aeza, OS - Ubuntu Server 22.04. I installed the ffmpeg version 4.4.2 with the command sudo apt install ffmpeg.

  


  On the first day everything worked fine, but the next day the bot began to steadily stop playing music at the same moment in different videos (this moment is different for each video). Restarting the bot or server did not help.

  


  Only reinstalling the operating system helps, but also only for one day.

  


  Specific problem :

  


  I checked the execution of every single line of the discord.VoiceClient.play method, including all methods called internally. It turned out that the bot hangs every time on the same iteration of the cycle of receiving and sending bytes. Namely, on the first line of the discord.FFmpegPCMAudio.read method, that is does not receive data from ffmpeg and waits indefinitely.

  


  ---

  


  Source of the problem :

  


  The problem is not with a specific ffmpeg :

  


  

  • I also installed ffmpeg on another version 5.1.2 and the problem was repeated on it.

  


  


  The problem is not Ubuntu Server :

  


  

  • I changed OS Ubuntu Server to Debian 11 and it's the same there

  


  


  The problem is not in Linux :

  


  

  • When I put the same OS on my virtual machine, everything worked fine with any version of ffmpeg.

  


  


  ---

  


  So the problem is on the hosting side ? I asked those. support to change the server itself and the location of the location. Changed from Sweden to Germany - the same result.

  


  If the data does not come from ffmpeg, then you need to find out what is wrong in the program itself. When calling, I pass the -loglevel debug argument, which shows the most detailed report on the program's operation - all debugging information is displayed, but there are no errors on the "hung" iteration.

  


  What could be the problem ?

  


  ---

  


  UPD 03.05.2023 : I reinstalled OS Ubuntu Server again and the bot works now. But obviously not for long. Maybe I need to clear some cache ?

  


• Evolution #2969 : Retourner message_ok et message_erreur sur un traitement CVT

  18 novembre 2013, par cam.lafit -

  Salut

  Oui retourner une erreur si il y a est logique :) Je ne remettais pas
  en doute ce point.
  C’est le fait de ne pouvoir dire que le verre est à moitié plein et à
  moitié vide. Pour le moment c’est soit plein soit vide.

  Si on injecte le résultat positif dans le message d’erreur, il se
  retrouver noyé dans le bloc erreur et ne profite pas de la mise en
  forme réussie. On peut trouver des cas où l’erreur n’interdit pas la
  réussite et vice versa.