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• Discord.py : Access files on the computer of the person who sent a message. Play a song from the local drive of any user on the server

  7 avril 2021, par daDib

  I have a bot that can play music from my computer. Is there a way to play a song from the computer of the person who sent the message ? My thought would be using message.author to somehow access the person's session and get into their drive. Here is my bot. It can join a voice channel, create playlists from local file paths, start a playlist or individual file with stop/pause/play/next/previous controls :

  


  import discord
import os.path
import logging
import asyncio
from os import path

global ready 
global vc
global source
global songQueue
global songIndex
global commandList
global stopPlaylist

ready = False
stopPlaylist = False
songQueue = []
songIndex = 0

logger = logging.getLogger('discord')
logger.setLevel(logging.DEBUG)
handler = logging.FileHandler(filename='D:\DnD\DiscordBot\discord.log', encoding='utf-8', mode='w')
handler.setFormatter(logging.Formatter('%(asctime)s:%(levelname)s:%(name)s: %(message)s'))
logger.addHandler(handler)

client = discord.Client()
commands = [
    '!connect\nConnect to a voice channel by channel id. Use !channels to find the desired id.\nExample Command: !connect 827202170973323305\n\n',
    '!channels\nLists all voice channels and their connection id.\n\n',
    '!add\nAdd a file path to the playlist.\nExample Command: !add D:\\DnD\\DiscordBot\\mySong.mp3\n\n',
    '!delete\nDeletes the last song added to the playlist.\n\n',
    '!view\nDisplays the current playlist, in order.\n\n',
    '!playlist\nStarts the playlist from the beginning, or optionally add a number as the start position.\nExample Command: !playlist 3\n\n',
    '!playSong\nPlays a specified file.\nExample Command: !playSong D:\\DnD\\DiscordBot\\mySong.mp3\n\n',
    '!next\nPlays next song in playlist.\n\n',
    '!prev\nPlays previous song in playlist.\n\n',
    '!stop\nStops all music song. Playlist will restart from the beginning.\n\n',
    '!pause\nPauses the current song. Restart with !resumeSong.\n\n',
    '!resume\nResumes the current song.\n\n'
    '!status\nLets you know if the bot thinks it is playing music.'
    ]
commandList=''
for command in commands:
    commandList+=command

@client.event
async def on_ready():
    print('We have logged in as {0.user}'.format(client))

@client.event
async def on_message(message):
    global ready 
    global vc
    global source
    global songQueue
    global songIndex
    global commandList
    global stopPlaylist

    if message.author == client.user:
        return
#!help
    if message.content.startswith('!help'):
        await message.channel.send('{0}'.format(commandList))
        return
#!connect
    if message.content.startswith('!connect'):  
        if ready:
            await message.channel.send('Bot [{0}] is already connected to a voice channel.'.format(client.user))
            return
        channel = int(message.content[9:])
        vc = await client.get_channel(channel).connect()
        ready = True
        await message.channel.send('Bot [{0}] is connecting to voice.'.format(client.user))
        return
#!channels
    if message.content.startswith('!channels'):
        channelList = ''
        for channel in client.get_all_channels():
            if channel.type == discord.ChannelType.voice:
                channelList += 'name: ' + channel.name + '\n'
                channelList += 'id: ' + str(channel.id) + '\n\n'
        await message.channel.send('{0}'.format(channelList))
        return
#!add
    if message.content.startswith('!add'):
        song = message.content[5:]
        if not path.exists(song):
            await message.channel.send('Song not found or invalid path specified.\nSpecified Path: {0}\nExample command: !addSong C:\\Users\\Public\\Music\\mySong.mp3'.format(song))
            return
        songQueue.append(song)
        await message.channel.send('Song added: {0}\nCurrent playist length: {1} song(s)'.format(song,len(songQueue)))
        return
#!delete
    if message.content.startswith('!delete'):
        if len(songQueue) == 0:
            await message.channel.send('Playlist is empty. Use !addSong, !viewList, and !playList to manage playlists.')
            return
        await message.channel.send('Removed song: {0}'.format(songQueue.pop()))
        return
#!view
    if message.content.startswith('!view'):
        if len(songQueue) == 0:
            await message.channel.send('Playlist is empty. Use !addSong, !deleteSong, and !playList to manage playlists.')
            return
        await message.channel.send('Current Playlist:\n{0}'.format('\n'.join(songQueue)))
        return
#play commands
    if message.content.startswith('!play'):
        if not ready:
            await message.channel.send('Bot [{0}] is not connected to a voice channel.'.format(client.user))
            return
#!playlist  
        if message.content.startswith('!playlist'):
            try:
                songIndex = int(message.content[10:]) - 1
                if songIndex >= len(songQueue):
                    songIndex = len(songQueue) - 1
            except:
                pass    
            playSong()
            return
#!playSong
        if message.content.startswith('!playSong'):
            song = message.content[10:]
            if not path.exists(song):
                await message.channel.send('Song not found or invalid path specified.\nSpecified Path: {0}\nExample command: !play C:\\Users\\Public\\Music\\mySong.mp3'.format(song))
                return
            source = discord.FFmpegPCMAudio(song)
            vc.play(source, after=None)
            await message.channel.send('Playing song: {0}'.format(song))
            return
#!next
    if message.content.startswith('!next'):
        vc.stop()
#!prev
    if message.content.startswith('!prev'):
        songIndex -= 2
        if songIndex < -1:
            songIndex = -1
        vc.stop()
#!stop
    if message.content.startswith('!stop'):
        if not ready:
            await message.channel.send('Bot [{0}] is not connected to a voice channel.'.format(client.user))
            return
        vc.stop()
        songIndex = 0
        stopPlaylist = True
        await message.channel.send('Stopping music.')
        return
#!pause
    if message.content.startswith('!pause'):
        if not ready:
            await message.channel.send('Bot [{0}] is not connected to a voice channel.'.format(client.user))
            return
        vc.pause()
        await message.channel.send('Pausing music.')
        return
#!resume
    if message.content.startswith('!resume'):
        if not ready:
            await message.channel.send('Bot [{0}] is not connected to a voice channel.'.format(client.user))
            return
        vc.resume()
        await message.channel.send('Resuming music.')
        return
#!status
    if message.content.startswith('!status'):
        if not ready:
            await message.channel.send('Bot [{0}] is not connected to a voice channel.'.format(client.user))
            return
        if vc.is_playing():
            await message.channel.send('Something is playing.')
            return
        await message.channel.send('Nothing is playing.')
        return

def playSong():
    global songQueue
    global songIndex
    global vc
    try:
        song = songQueue[songIndex]
        source = discord.FFmpegPCMAudio(song)
        vc.play(source, after=nextSong)
    except Exception as e:
        print('playSong error {0}'.format(e))

def nextSong(error):
    global songQueue
    global songIndex
    global stopPlaylist
    try:
        songIndex += 1
        if songIndex >= len(songQueue):
            stopPlaylist = True
        if stopPlaylist:
            songIndex = 0
            stopPlaylist = False
            return
        futureFunction = asyncio.run_coroutine_threadsafe(playSong(), client.loop)
        futureFunction.result()
    except Exception as e:
        print('nextSong error {0}'.format(e))

#@client.event
#async def on_logout(user)
#   global ready
#   if user == client.user:
#       ready = False

client.run('TOKEN')


  


• ffmpeg : error while loading shared libraries : libvpx.so.6 : cannot open shared object file : No such file or directory

  16 avril 2021, par Panos

  I am building a multi tool discord bot in Python rewrite.

  


  So I decided to add music to it as well. When I completed the bot and tried it on my local pc it worked perfectly. However when I uploaded to Heroku I got some errors for ffmpeg.

  


  Initially I thought Heroku is Linux based so I downloaded ffmpeg for Linux. Still didn't work. Then i added a apt buildpack and downloaded it that way. It worked however now a get a different error. It finds the ffmpeg but the song is not played and this is displayed in the console :

  


  


  [ffmpeg : error while loading shared libraries : libvpx.so.6 : cannot
open shared object file : No such file or directory]

  


  


  How can I resolve this issue ?

  


  Here is the whole code :

  


  import discord
from discord.ext import commands

import asyncio
import itertools
import sys
import traceback
from async_timeout import timeout
from functools import partial
from youtube_dl import YoutubeDL
import ctypes
import ctypes.util

@commands.Cog.listener()
async def on_ready(self):

    print("ctypes - Find opus:")
    a = ctypes.util.find_library('opus')
    print(a)
    
    print("Discord - Load Opus:")
    b = discord.opus.load_opus(a)
    print(b)
    
    print("Discord - Is loaded:")
    c = discord.opus.is_loaded()
    print(c)



ytdlopts = {
    'format': 'bestaudio/best',
    'outtmpl': 'downloads/%(extractor)s-%(id)s-%(title)s.%(ext)s',
    'restrictfilenames': True,
    'noplaylist': True,
    'nocheckcertificate': True,
    'ignoreerrors': False,
    'logtostderr': False,
    'quiet': True,
    'no_warnings': True,
    'default_search': 'auto',
    'source_address': '0.0.0.0'
}

ffmpegopts = {
    'before_options': '-nostdin',
    'options': '-vn'
}

ytdl = YoutubeDL(ytdlopts)


class VoiceConnectionError(commands.CommandError):


class InvalidVoiceChannel(VoiceConnectionError):



class YTDLSource(discord.PCMVolumeTransformer):

    def __init__(self, source, *, data, requester):
        super().__init__(source)
        self.requester = requester

        self.title = data.get('title')
        self.web_url = data.get('webpage_url')


    def __getitem__(self, item: str):
        return self.__getattribute__(item)

    @classmethod
    async def create_source(cls, ctx, search: str, *, loop, download=False):
        loop = loop or asyncio.get_event_loop()

        to_run = partial(ytdl.extract_info, url=search, download=download)
        data = await loop.run_in_executor(None, to_run)

        if 'entries' in data:
            data = data['entries'][0]

        await ctx.send(f'```ini\n[Added {data["title"]} to the Queue.]\n```')

        if download:
            source = ytdl.prepare_filename(data)
        else:
            return {'webpage_url': data['webpage_url'], 'requester': ctx.author, 'title': data['title']}

        return cls(discord.FFmpegPCMAudio(source), data=data, requester=ctx.author)

    @classmethod
    async def regather_stream(cls, data, *, loop):
        """Used for preparing a stream, instead of downloading.
        Since Youtube Streaming links expire."""
        loop = loop or asyncio.get_event_loop()
        requester = data['requester']

        to_run = partial(ytdl.extract_info, url=data['webpage_url'], download=False)
        data = await loop.run_in_executor(None, to_run)

        return cls(discord.FFmpegPCMAudio(data['url']), data=data, requester=requester)


class MusicPlayer(commands.Cog):

    __slots__ = ('bot', '_guild', '_channel', '_cog', 'queue', 'next', 'current', 'np', 'volume')

    def __init__(self, ctx):
        self.bot = ctx.bot
        self._guild = ctx.guild
        self._channel = ctx.channel
        self._cog = ctx.cog

        self.queue = asyncio.Queue()
        self.next = asyncio.Event()

        self.np = None
        self.volume = .5
        self.current = None

        ctx.bot.loop.create_task(self.player_loop())

    async def player_loop(self):
        """Our main player loop."""
        await self.bot.wait_until_ready()

        while not self.bot.is_closed():
            self.next.clear()

            try:
                    source = await self.queue.get()
            except asyncio.TimeoutError:
                return self.destroy(self._guild)

            if not isinstance(source, YTDLSource):
                try:
                    source = await YTDLSource.regather_stream(source, loop=self.bot.loop)
                except Exception as e:
                    await self._channel.send(f'There was an error processing your song.\n'
                                             f'```css\n[{e}]\n```')
                    continue

            source.volume = self.volume
            self.current = source

            self._guild.voice_client.play(source, after=lambda _: self.bot.loop.call_soon_threadsafe(self.next.set))
            self.np = await self._channel.send(f'**Now Playing:** `{source.title}` requested by '
                                               f'`{source.requester}`')
            await self.next.wait()

            source.cleanup()
            self.current = None

            try:
                await self.np.delete()
            except discord.HTTPException:
                pass

    def destroy(self, guild):
        """Disconnect and cleanup the player."""
        return self.bot.loop.create_task(self._cog.cleanup(guild))


class Music(commands.Cog):
    """Music related commands."""

    __slots__ = ('bot', 'players')

    def __init__(self, bot):
        self.bot = bot
        self.players = {}

    async def cleanup(self, guild):
        try:
            await guild.voice_client.disconnect()
        except AttributeError:
            pass

        try:
            del self.players[guild.id]
        except KeyError:
            pass

    async def __local_check(self, ctx):
        """A local check which applies to all commands in this cog."""
        if not ctx.guild:
            raise commands.NoPrivateMessage
        return True

    async def __error(self, ctx, error):
        """A local error handler for all errors arising from commands in this cog."""
        if isinstance(error, commands.NoPrivateMessage):
            try:
                return await ctx.send('This command can not be used in Private Messages.')
            except discord.HTTPException:
                pass
        elif isinstance(error, InvalidVoiceChannel):
            await ctx.send('Error connecting to Voice Channel. '
                           'Please make sure you are in a valid channel or provide me with one')

        print('Ignoring exception in command {}:'.format(ctx.command), file=sys.stderr)
        traceback.print_exception(type(error), error, error.__traceback__, file=sys.stderr)

    def get_player(self, ctx):
        """Retrieve the guild player, or generate one."""
        try:
            player = self.players[ctx.guild.id]
        except KeyError:
            player = MusicPlayer(ctx)
            self.players[ctx.guild.id] = player

        return player

    @commands.command(name='connect', aliases=['join'])
    async def connect_(self, ctx):
        try:
            channel = ctx.author.voice.channel
        except AttributeError:
            raise InvalidVoiceChannel('No channel to join.')

        vc = ctx.voice_client

        if vc:
            if vc.channel.id == channel.id:
                return
            try:
                await vc.move_to(channel)
            except asyncio.TimeoutError:
                raise VoiceConnectionError(f'Moving to channel: <{channel}> timed out.')
        else:
            try:
                await channel.connect()
            except asyncio.TimeoutError:
                raise VoiceConnectionError(f'Connecting to channel: <{channel}> timed out.')

        await ctx.send(f'Connected to: **{channel}**', )

    @commands.command(name='play', aliases=['sing'])
    async def play_(self, ctx, *, search: str):
        await ctx.trigger_typing()

        vc = ctx.voice_client

        if not vc:
            await ctx.invoke(self.connect_)

        player = self.get_player(ctx)
        source = await YTDLSource.create_source(ctx, search, loop=self.bot.loop, download=False)

        await player.queue.put(source)

    @commands.command(name='pause')
    async def pause_(self, ctx):
        """Pause the currently playing song."""
        vc = ctx.voice_client

        if not vc or not vc.is_playing():
            return await ctx.send('I am not currently playing anything!')
        elif vc.is_paused():
            return

        vc.pause()
        await ctx.send(f'**`{ctx.author}`**: Paused the song!')

    @commands.command(name='resume')
    async def resume_(self, ctx):
        """Resume the currently paused song."""
        vc = ctx.voice_client

        if not vc or not vc.is_connected():
            return await ctx.send('I am not currently playing anything!', )
        elif not vc.is_paused():
            return

        vc.resume()
        await ctx.send(f'**`{ctx.author}`**: Resumed the song!')

    @commands.command(name='skip')
    async def skip_(self, ctx):
        """Skip the song."""
        vc = ctx.voice_client

        if not vc or not vc.is_connected():
            return await ctx.send('I am not currently playing anything!')

        if vc.is_paused():
            pass
        elif not vc.is_playing():
            return

        vc.stop()
        await ctx.send(f'**`{ctx.author}`**: Skipped the song!')

    @commands.command(name='queue', aliases=['q', 'playlist'])
    async def queue_info(self, ctx):
        """Retrieve a basic queue of upcoming songs."""
        vc = ctx.voice_client

        if not vc or not vc.is_connected():
            return await ctx.send('I am not currently connected to voice!')

        player = self.get_player(ctx)
        if player.queue.empty():
            return await ctx.send('There are currently no more queued songs.')

        upcoming = list(itertools.islice(player.queue._queue, 0, 5))

        fmt = '\n'.join(f'**`{_["title"]}`**' for _ in upcoming)
        embed = discord.Embed(title=f'Upcoming - Next {len(upcoming)}', description=fmt)

        await ctx.send(embed=embed)

    @commands.command(name='now_playing', aliases=['np', 'current', 'currentsong', 'playing'])
    async def now_playing_(self, ctx):
        """Display information about the currently playing song."""
        vc = ctx.voice_client

        if not vc or not vc.is_connected():
            return await ctx.send('I am not currently connected to voice!', )

        player = self.get_player(ctx)
        if not player.current:
            return await ctx.send('I am not currently playing anything!')

        try:
            await player.np.delete()
        except discord.HTTPException:
            pass

        player.np = await ctx.send(f'**Now Playing:** `{vc.source.title}` '
                                   f'requested by `{vc.source.requester}`')

    @commands.command(name='volume', aliases=['vol'])
    async def change_volume(self, ctx, *, vol: float):
        """Change the player volume.
        Parameters
        ------------
        volume: float or int [Required]
            The volume to set the player to in percentage. This must be between 1 and 100.
        """
        vc = ctx.voice_client

        if not vc or not vc.is_connected():
            return await ctx.send('I am not currently connected to voice!', )

        if not 0 < vol < 101:
            return await ctx.send('Please enter a value between 1 and 100.')

        player = self.get_player(ctx)

        if vc.source:
            vc.source.volume = vol / 100

        player.volume = vol / 100
        await ctx.send(f'**`{ctx.author}`**: Set the volume to **{vol}%**')

    @commands.command(name='stop', aliases=['leave'])
    async def stop_(self, ctx):
        vc = ctx.voice_client

        if not vc or not vc.is_connected():
            return await ctx.send('I am not currently playing anything!')

        await self.cleanup(ctx.guild)


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


  


• FFMPEG filtergraph 'warning, too many B-frames in a row' [on hold]

  26 juin 2017, par Leif Andersen

  I am trying to append two videos together with FFmpeg’s filtergraph. One video is sized 1920x1080 at 30fps, and another 1280x720 at 25fps. Both use yuv420p, and have the same pixel densities. I am currently ignoring the audio tracks. The following is my filtergraph :

  [video2]fifo[video3];
  
  [video3]pad=width=1920:height=1080[video9];
  
  [video9]fps=fps=25[video11];
  
  [video11]setpts=expr=PTS-STARTPTS[video17];
  
  
  
  [video6]fifo[video7];
  
  [video7]pad=width=1920:height=1080[video13];
  
  [video13]fps=fps=25[video15];
  
  [video15]setpts=expr=PTS-STARTPTS[video19];
  
  
  
  [video17][video19]concat=v=1:a=0:n=2[video21];
  
  [video21]pad=width=1920:height=1080[video23];
  
  [video23]fps=fps=25[video25];
  
  [video25]format=pix_fmts=yuv420p[video27]

  The first chain tries to convert the first video into a common format, that starts at 0 for the concat filter. The second chain does the same as the first. Finally, the third chain concatenates them videos together, and sets some properties for the resulting playlist.

  Unfortunately, when I run this error, ffmpeg repeatedly outputs :

  [mpeg4 @ 0x7fc16a810600] warning, too many B-frames in a row

  When finished, I see the first video, padded to the correct resolution and frame rate, but instead of the second Video I see black. Additionally, the entire video is several days in length, starting with the first Video and ending in several days of just black.

  I cannot figure out why I am getting this error, as it seems like I am setting the videos to have identical properties. What am I missing ?

  Also, for what its worth, I am using FFmpeg’s C API rather than the command line tool. I am using libavformat/libavcodec/libavutil to do the encoding/decoding and libavfilter for the filtergraph.