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• ffmpeg for php and how to reduce noise

  30 mai 2012, par Kamil Krzyszczuk

  I have an audio wav file (1-7 sec) and need to reduce noise or just make background volume down, in PHP maybe by using ffmpeg.
  Also after reduce bg, is it possible to trim free spaces of sound at begining and end of audio ?

  Is there any way for these things ?

• Hello ! I have a little problem with my discord.py music bot

  5 mars 2021, par Luca M. Schmidt

  i'm rather new/unexpierience with youtube-dl and python. The thing i'm triying to do is to add a queue system to my music cog. When possible it should be able to add songs and start the next song after the first one ended as well. You dont need to provide the complete code for it, tryingt to explain how it should work and giving some tipps should be enought. If more information is needed, feel free to ask. Thx for helping.

  


  My Code (Stripped down a bit) :

  


  # IMPORT


import discord
from discord.ext import commands
import json
import asyncio
import youtube_dl



# LOKALE_VARIABLEN


ytdl_format_options = {
    'format': 'bestaudio/best',
    'outtmpl': '%(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'
}

ffmpeg_options = {
    'options': '-vn'
}

ytdl = youtube_dl.YoutubeDL(ytdl_format_options)

songs = asyncio.Queue()
play_next_song = asyncio.Event()


# ----

class YTDLSource(discord.PCMVolumeTransformer):
    def __init__(self, source, *, data, volume=0.5):
        super().__init__(source, volume)

        self.data = data

        self.title = data.get('title')
        self.url = data.get('url')
        self.thumbnail = data.get('thumbnail')


    @classmethod
    async def from_url(cls, url, *, loop=None, stream=False):
        loop = loop or asyncio.get_event_loop()
        data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url, download=not stream))

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

        filename = data['url'] if stream else ytdl.prepare_filename(data)
        return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)


# COG_SETUP(START)


class Music(commands.Cog):

    def __init__(self, client):
        self.client = client


    @commands.command()
    async def join(self, ctx, *, channel: discord.VoiceChannel):

        if ctx.voice_client is not None:
            return await ctx.voice_client.move_to(channel)

        await channel.connect()

    @commands.command()
    @commands.cooldown(1, 10, commands.BucketType.user)
    async def play(self, ctx, *, url):

        try:

            async with ctx.typing():
                player = await YTDLSource.from_url(url, loop=self.client.loop, stream=True)
            ctx.voice_client.play(player, after=lambda e: print('Player error: %s' % e) if e else None)

        except:
            embed = discord.Embed(
                title='Fehler!',
                colour=discord.Colour.red(),
                description='Dies ist eine nicht Unterstützte URL!'
            )

            return await ctx.send(embed=embed)

        embed = discord.Embed(
            title='',
            colour=discord.Colour.blue(),
            description=f'[{format(player.title)}]({player.url})'
        )
        embed.set_author(name='Spielt gerade:')
        embed.set_image(url=player.thumbnail)
        embed.set_footer(text=f'Hinzugefügt von: {ctx.author.name}', icon_url=ctx.author.avatar_url)


        await ctx.send(embed=embed)




    @commands.command()
    async def volume(self, ctx, volume: int):

        if ctx.voice_client is None:

            embed = discord.Embed(
                title='Fehler!',
                colour=discord.Colour.red(),
                description='Ich bin mit keinem Sprachkanal verbunden!'
            )

            return await ctx.send(embed=embed)

        elif ctx.voice_client is not None:

            if volume in range(0, 201):
                try:
                    ctx.voice_client.source.volume = volume / 100

                    embed = discord.Embed(
                        title='Lautstärke',
                        colour=discord.Colour.blue(),
                        description=f'Lautstärke auf **{format(volume)}**% gestellt.'
                    )
                    embed.set_footer(text=f"Angepasst von: {ctx.author.name}", icon_url=ctx.author.avatar_url)

                    return await ctx.send(embed=embed)
                except:
                    pass

            else:

                embed = discord.Embed(
                    title='Fehler!',
                    colour=discord.Colour.red(),
                    description='Das ist Lauter, als die Musik geht!'
                )

                return await ctx.send(embed=embed)

    @commands.command()
    async def stop(self, ctx):
        try:

            await ctx.voice_client.disconnect()
            await ctx.message.delete()

        except:
            pass

    @commands.command()
    async def pause(self, ctx):

        if ctx.voice_client.is_playing():

            ctx.voice_client.pause()
            await ctx.message.delete()
            return

        else:

            embed = discord.Embed(
                title='Fehler!',
                colour=discord.Colour.red(),
                description='Es spielt keine Musik!'
            )

            return await ctx.send(embed=embed)

    @commands.command()
    async def resume(self, ctx):

        if ctx.voice_client.is_paused():

            ctx.voice_client.resume()
            await ctx.message.delete()
            return

        else:

            embed = discord.Embed(
                title='Fehler!',
                colour=discord.Colour.red(),
                description='Es wurde keine Musik pausiert, darum kann ich auch nichts fortsetzen!'
            )

            return await ctx.send(embed=embed)

    @resume.before_invoke
    @play.before_invoke
    async def ensure_voice(self, ctx):
        if ctx.voice_client is None:
            if ctx.author.voice:
                try:

                    await ctx.author.voice.channel.connect()

                except commands.CommandError:
                    embed = discord.Embed(
                        title='Fehler!',
                        colour=discord.Colour.red(),
                        description='Du bist nicht mit einem Sprachkanal verbunden!'
                    )

                    await ctx.send(embed=embed)

        elif ctx.voice_client.is_playing():
            ctx.voice_client.stop()


# COG_SETUP(END)


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



  


• How change audio volumes with amix filter in ffmpeg

  6 décembre 2015, par zella

  I have command to mix two mp3

  ffmpeg -i 1.mp3 -i 2.mp3 -filter_complex amix=inputs=2 -c:a libfdk_aac output.mp4 

  How to change volume of every audios in result output ?