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• Need help to create a queue system with a discord.py bot

  19 août 2024, par Zamv

  im trying to create a bot with discord.py, i'll start saying that the bot is for personal use so please don't point out that i shouldn't use ydl in the comments, ty :
Also, im a beginner, so please tell me what I can improve and any errors there are, I will be happy to listen.
That said, i've been stuck on trying to create this queue system for songs for the past 3 days, the bot was working perfectly fine and played some urls before i implemented the play_next function, now it doesn't even play the first song, even if it sends confirmation messages both in the terminal that in the discord channel, i know that the code might be a little confusing, but please i really need to know how to make this work

  


  i wrote two main functions : "play_next" to play the next song in the queue and "play", the main command.
Here is my play_next function :

  


  async def play_next(self,ctx):
        if not ctx.voice_client.is_playing: #(don't know if this is correct as I also check if the bot isn't                     playing anything in the play function)
            
            if self.song.queue: 
                next_song = self.song_queue.pop(0) #deleting the first element of the queue, so if we have (song_0, song_1 and song_2) the bot should delete (song_0) making in fact song_1 the "next" song_0
                try:
                    ctx.voice_client.play(discord.FFmpegPCMAudio(next_song), 
                                          after=lambda e: self.bot.loop.create_task(self.play_next(ctx))) #Not gonna lie here, i asked chat gpt for this line, it should make the bot automatically play the next song one after another, correct me if I am wrong

#this is not important
                    embed = discord.Embed(
                        title="Song",
                        description=f"Now playing {next_song}",
                        color = 0x1DB954
                    )
                    await ctx.send(embed=embed)
                except Exception as e:
                    print(f"Error playing the next song: {e}")

            else:
                await ctx.voice_client.disconnect()  # disconnecting from the voice channel if the queue is empty
                print("Disconnected from the voice channel as the queue is empty.")


  


  I think that the main problem of my bot is the play_next function, but here it is my "play" function :

  


      @commands.command(pass_context=True)
    async def play(self, ctx, url: str):  
        if ctx.author.voice:  # first checking if the user is in a voice channel
            if not ctx.voice_client: #then checking if the bot is already connected to a voice channel
                channel = ctx.message.author.voice.channel 
                try:
                    await channel.connect()  #then joining
                    print("I joined the voice channel!")
                except Exception as e:
                    print(f"Failed to connect to the voice channel: {e}")
                    return

            song_path = f"song_{self.song_index}.mp3" #note, im using cogs, i declared self.song_index with the value of 0 
            self.song_index += 1 #i thought that this was the easiest way of creating a new file for each song

            ydl_opts = {
                'format': 'bestaudio/best',
                'postprocesors': [{
                    'key': 'FFmpegExtractAudio',
                    'preferredcodec': 'mp3',
                    'preferredquality': '192',
                }],
                'outtmpl': song_path
            }
            try:
                with youtube_dl.YoutubeDL(ydl_opts) as ydl:
                    print("Starting download...")
                    ydl.download([url]) #this is where it should download the song provided by the url
                    print("Download finished.")
            except Exception as e:
                await ctx.send(f"Failed to download the song: {e}")
                return

#i think that the next two if statements are the main threats
            if os.path.exists(song_path): #if there is atleast 1 song in the queue
                self.song_queue.append(song_path) #append the next one
                embed = discord.Embed(
                    title="Added to Queue!",
                    description = f"{url} has been added to the queue.",
                    color=0x33ff33
                )
                await ctx.send(embed=embed)


                if not ctx.voice_client.is_playing(): #checking if the bot is already playing something, don't know if i should put this if statement here
                    print("Starting playback...")
                    await self.play_next(ctx) #if nothing is playing, then the bot should play the next song



            else:
                await ctx.send("Failed to download or find the audio file.")

        else:
            embed = discord.Embed(
                title="❌You must be in a voice channel",
                color=0xff6666
            )
            await ctx.send(embed=embed)


  


  thanks in advance, i will try to read and answer any questions as soon as possible

  


• Issues with Discord JS Music Bot

  5 décembre 2020, par Thresio

  I am in the process of creating a Discord bot with JS, giving it management, auto role, etc. I just got to the music section of it and I can't quite figure out whats wrong.

  



  I believe I have installed FFmpeg correctly, as I have access to it from within the terminal. I have also used npm to bring ytdl-core and opusscript into my program.

  



  What this should do is make the bot join the chat, then play the Youtube link. Currently, I am not error checking the second argument as I just wanted to get it working initially. I have implemented several different instances of .toString() and String() however it always gives the same error listed below.

  



  . The program still throws this error :

  



  TypeError [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type string. Received type object
TypeError [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type string. Received type object

C:\Users\Thresio's PC\Desktop\Discord Bot\node_modules\opusscript\build\opusscript_native_wasm.js:8
var Module=typeof Module!=="undefined"?Module:{};var moduleOverrides={};var
key;for(key in Module){if(Module.hasOwnProperty(key))
{moduleOverrides[key]=Module[key]}}Module["arguments"]=
[];Module["thisProgram"]="./this.program";Module["quit"]=function(status,toThrow) {throw
toThrow};Module["preRun"]=[];Module["postRun"]=[];var ENVIRONMENT_IS_WEB=false;var 
ENVIRONMENT_IS_WORKER=false;var ENVIRONMENT_IS_NODE=false;var ENVIRONMENT_HAS_NODE=false;var 
ENVIRONMENT_IS_SHELL=false;ENVIRONMENT_IS_WEB=typeof window==="object";ENVIRONMENT_IS_WORKER=typeof 
importScripts==="function";ENVIRONMENT_HAS_NODE=typeof process==="object"&&typeof 
process.versions==="object"&&typeof 
process.versions.node==="string";ENVIRONMENT_IS_NODE=ENVIRONMENT_HAS_NODE&&!ENVIRONMENT_IS_WEB&&!ENVIRONM
ENT_IS_WORKER;ENVIRONMENT_IS_SHELL=!ENVIRONMENT_IS_WEB&&!ENVIRONMENT_IS_NODE&&!ENVIRONMENT_IS_WORKER;var
scriptDirectory="";function locateFile(path){i
abort(TypeError [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type 
string. Received type object). Build with -s ASSERTIONS=1 for more info. 


  



  Here is my code for calling play :

  



  case 'play':

            function play(connection, message){
                var server = servers[message.guild.id];

                server.dispatcher = connection.playStream(ytdl(server.queue[0], {filter: 'audioonly'}));

                server.queue.shift();

                server.dispatcher.on('end', function(){
                    if(server.queue[0]){
                        play(connection, message);
                    }else {
                        connection.disconnect();
                    }
                })
            }

            if(!args[1]){
                message.channel.send('You need to provide a link!');
                return;
            }

            if(!message.member.voiceChannel){
                message.channel.send('You must be in a voice channel to play music!');
                return;
            }

            if(!servers[message.guild.id]) servers[message.guild.id] = {
                queue: []
            }

            var server = servers[message.guild.id];

            server.queue.push(args[1]);

            if(!message.guild.voiceConnection) message.member.voiceChannel.join().then(function(connection){
                play(connection, message);
            })
            break;


  



  If anyone could assist with this, I would be very grateful.

  



  EDIT : I unfortunately never figured out my main issue, but I have now found code that works (unlike mine :/).
For anyone else having this issue, I suggest using the code found here.
Works like a charm !

  


• What would cause video whose position is set and played at a certain millisecond, to not align with a video trimmed to that same millisecond position ?

  2 décembre 2020, par Cha Pa

  I have developed a windows C# application that allows you to cut clips of video that is synched to a transcript.

  


  The application has a video tuner that allows you to adjust the start and stops of the clip in .1, 1, 3 seconds and gives you a short 2 second preview of the start or 2 seconds leading up to the stop as a preview. Then you can cut that video into a small clip by pressing a create clip button.

  


  Because of of the nature of the provider of the videos, these videos are typically Mpeg1 that are over an hour long and are all varying in both in width/height dimensions as well as bitrate. Changing the format is not an option.

  


  My question is this. What would cause the video player to play earlier than where the video is cut using an ffmpeg wrapper ?

  


  I have developed a test version in winform with a mediaplayer control, a version in WPF with a mediacontrol player, and another winform with a vlcwrapper. All of them start early as compared to the ffmpeg cut. All of them start at a slightly different time from each other even though they are all provided the same millisecond time stamp. In fact testing directly with setting command line position to ffplay and vlc, they have slightly different start times when using the same position and both are different then the command line cut of ffmpeg.

  


  The infuriating thing is that when I compare the ffmpegwrapper exports they are dead on with another piece of software's playback preview and clip export. Every video I clip that has a different bitrate or resolution is sightly off to a differing number of milliseconds. One video may be .4 seconds off and another is 1.1. I would assume it was a delay due to the loading of the video and I can async await somehow, or assume it was a problem with the timer, except it starts EARLY not late. All 3 demos are some variation of the code below that grabs start time and end times and calls a timer to stop the video after playing the number of milliseconds calculated between the start and end. Even more peculiar, the shorter the timer, the shorter the start time appears to be off.

  


  Any thoughts on if it is an mpeg1 mpeg2 issue or a bitrate issue I can control to be consistent between videos without re-encoding every video ? Maybe even outside the box ways to put clips to memory stream or play the temp file quickly ?

  


  private void PreviewStartButton_Click(object sender, EventArgs e)
       {
           startPosition = Convert.ToSingle(startBox.Text);
           stopPosition = startPosition + 2; //gives you your 2 second preview of the star
           mediaPlayer.Ctlcontrols.currentPosition = origStartTime;
           mediaPlayer.Ctlcontrols.play();
           StopWmpPlayerTimer();
           StartWmpPlayerTimer();
       }