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• Discord bot leaving voice channel immediately after joining

  17 janvier 2018, par Forb

  I am building a bot for my discord server to play the audio YouTube videos as I haven’t found a reliable bot online.

  The bot connects to my voice channel after I type the !play url command but immediately leaves even if the URL is valid.

  My code is below :

  [Command("play", RunMode = RunMode.Async)]
  
  public async Task play(string url) {
  
      IVoiceChannel channel = (Context.User as IVoiceState).VoiceChannel;
  
      IAudioClient client = await channel.ConnectAsync();
  
  
  
      var output = CreateStream(url).StandardOutput.BaseStream;
  
      var stream = client.CreatePCMStream(AudioApplication.Music, 128 * 1024);
  
      output.CopyToAsync(stream);
  
      stream.FlushAsync().ConfigureAwait(false);
  
  }
  
  
  
  private Process CreateStream(string url) {
  
      Process currentsong = new Process();
  
  
  
      currentsong.StartInfo = new ProcessStartInfo {
  
          FileName = "cmd.exe",
  
          Arguments = $"/C youtube-dl -o - {url} | ffmpeg -i pipe:0 -ac 2 -f s16le -ar 48000 pipe:1",
  
          UseShellExecute = false,
  
          RedirectStandardOutput = true,
  
          CreateNoWindow = true
  
      };
  
  
  
      currentsong.Start();
  
      return currentsong;
  
  }

  I have tried using just ffmpeg with a file on my PC which was hard coded in, but I had the same result and the bot left the voice channel as soon as it connected.

  I did verify that both ffmpeg and youtube-dl were working by running the commands in a cmd window and they both ran fine.

• RTP streaming with FFMPEG [closed]

  24 octobre 2012, par Aniket Awati

  I am trying to use rtp streaming using ffmpeg. I am taking input from pulseaudio and creating an rtp stream.
  i.e.
  ffmpeg -re -f pulse -ac 2 -i SOURCE -ac 2 -acodec libmp3lame -re -f rtp rtp ://192.168.1.4:70000

  this is the sdp output that I get.

  v=0
  
  o=- 0 0 IN IP4 127.0.0.1
  
  s=No Name
  
  c=IN IP4 192.168.1.4
  
  a=tool:libavformat 54.20.100^M
  
  m=audio 7000 RTP/AVP 14^M

  Now when I play this SDP from the same machine it runs.
  But when I try to play it from other machines in the lan, it doesn't run.
  For eg. using mplayer I get - Can't get stream info - error.

  What is going wrong here ?

  Or should I be using some other server for streaming ?

• Best way to split multi channel audio file in Swift [on hold]

  8 mars 2016, par amkaufman

  I’m currently working on an iOS project in which I need to be able to split a multi-channel .AAC file. I’m still fairly new to iOS development and Swift and am not sure if the frameworks that I have seen will be able to do this.

  So far I have looked into AVFoundation and FFmpeg, but I’m still not sure if they would be able to do this.

  After looking into AudioKit’s documentation I am still a bit lost on how to actually split the file into its separate channels. Where exactly should I be looking ?