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• ffmpeg : Extract unknown data stream from video container

  23 juillet 2020, par Pikkostack

  I have a .MOV container which contains the following tracks :

  


  Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 100619 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
  creation_time   : 2020-07-21T22:48:24.000000Z
  handler_name    : DJI.AVC
  encoder         : AVC encoder
Stream #0:1(eng): Data: none (priv / 0x76697270), 87 kb/s
Metadata:
  creation_time   : 2020-07-21T22:48:24.000000Z
  handler_name    : DJI.Meta
Stream #0:2(eng): Subtitle: mov_text (text / 0x74786574), 2 kb/s (default)
Metadata:
  creation_time   : 2020-07-21T22:48:24.000000Z
  handler_name    : DJI.Subtitle


  


  As you can see, stream #0:1, called DJI.meta, is of an unknown data format. I just want to extract the raw data of this stream to a file. So that is the ffmpeg command I tried :

  


  ffmpeg -i .\DJI_0001.MOV -map 0:1 metadata


  


  But using this command results in the following error :

  


  Unable to find a suitable output format for 'metadata'
metadata: Invalid argument


  


  How can I tell ffmpeg that the data should not be formated, so that only the raw data is extracted ?

  


• Discord bot returning odd error message and not playing sound

  26 février 2020, par Ravenr_

  I am attempting to create a function of my discord bot that will join your voice channel then play something from youtube as specified in the command

  i.e. $play <youtube link="link"></youtube>

  The problem is that my bot joins the voice channel but doesn’t play any sound and outputs an error to the console that I dont know how to fix

  My Code :

  const ytdl = require("ytdl-core");
  
  module.exports = {
  
      name: 'play',
  
      description: 'initiates music methods of the bot',
  
      execute(msg, args){
  
          var servers = {};
  
  
  
          function play(connection, msg){
  
              var server = servers[msg.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, msg);
  
                  }else{
  
                      connection.disconnect();
  
                  }
  
              });
  
  
  
  
  
          }
  
          if(!args[1]){
  
              return msg.channel.send("you need to provide a link");
  
          } 
  
          if(!msg.member.voiceChannel){
  
              return msg.channel.send("You must be in a voice channel to use this feature");
  
          }
  
          if(!servers[msg.guild.id]) servers[msg.guild.id] = {
  
              queue: []
  
          }
  
          var server = servers[msg.guild.id];
  
          server.queue.push(args[1]);
  
          if(!msg.guild.voiceConnection) msg.member.voiceChannel.join().then(function(connection){
  
              play(connection, msg);
  
          })
  
      }
  
  }

  The Error :

  2020-02-26T16:31:59.458215+00:00 app[worker.1]: (node:4) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type string. Received an instance of Object
  
  2020-02-26T16:31:59.458223+00:00 app[worker.1]:     at validateString (internal/validators.js:117:11)
  
  2020-02-26T16:31:59.458224+00:00 app[worker.1]:     at normalizeSpawnArguments (child_process.js:406:3)
  
  2020-02-26T16:31:59.458224+00:00 app[worker.1]:     at Object.spawn (child_process.js:542:16)
  
  2020-02-26T16:31:59.458225+00:00 app[worker.1]:     at new FfmpegProcess (/app/node_modules/prism-media/src/transcoders/ffmpeg/FfmpegProcess.js:14:33)
  
  2020-02-26T16:31:59.458225+00:00 app[worker.1]:     at FfmpegTranscoder.transcode (/app/node_modules/prism-media/src/transcoders/ffmpeg/Ffmpeg.js:34:18)
  
  2020-02-26T16:31:59.458226+00:00 app[worker.1]:     at MediaTranscoder.transcode (/app/node_modules/prism-media/src/transcoders/MediaTranscoder.js:27:31)
  
  2020-02-26T16:31:59.458226+00:00 app[worker.1]:     at Prism.transcode (/app/node_modules/prism-media/src/Prism.js:13:28)
  
  2020-02-26T16:31:59.458227+00:00 app[worker.1]:     at AudioPlayer.playUnknownStream (/app/node_modules/discord.js/src/client/voice/player/AudioPlayer.js:97:35)
  
  2020-02-26T16:31:59.458231+00:00 app[worker.1]:     at VoiceConnection.playStream (/app/node_modules/discord.js/src/client/voice/VoiceConnection.js:478:24)
  
  2020-02-26T16:31:59.458232+00:00 app[worker.1]:     at play (/app/commands/play.js:11:44)

  for reference these are the links I tested it with 1 & 2

  I’m not sure how to make queue[0] a string, which is what I assume the problem is.

  I was thinking of using a toString() i.e. server.queue[0].toString() but I think that will just return the memory address.

  If anyone can help me know what the issue is or how to fix it, that would be great.

• Which directory should i put FFmpeg ? [duplicate]

  25 juillet 2020, par Panda Gaming23

  I am making a discord bot and I get the following error

  


  node:4) UnhandledPromiseRejectionWarning: Error: FFmpeg/avconv not found!

2020-07-25T01:00:13.991518+00:00 app[worker.1]:     at Function.getInfo (/app/node_modules/prism-media/src/core/FFmpeg.js:130:11)

2020-07-25T01:00:13.991519+00:00 app[worker.1]:     at Function.create (/app/node_modules/prism-media/src/core/FFmpeg.js:143:38)

2020-07-25T01:00:13.991519+00:00 app[worker.1]:     at new FFmpeg (/app/node_modules/prism-media/src/core/FFmpeg.js:44:27)

2020-07-25T01:00:13.991520+00:00 app[worker.1]:     at AudioPlayer.playUnknown (/app/node_modules/discord.js/src/client/voice/player/BasePlayer.js:47:20)

2020-07-25T01:00:13.991520+00:00 app[worker.1]:     at VoiceConnection.play (/app/node_modules/discord.js/src/client/voice/util/PlayInterface.js:71:28)

2020-07-25T01:00:13.991522+00:00 app[worker.1]:     at play (/app/commands/play.js:14:34)

2020-07-25T01:00:13.991522+00:00 app[worker.1]:     at /app/commands/play.js:42:5

2020-07-25T01:00:13.991522+00:00 app[worker.1]:     at processTicksAndRejections (internal/process/task_queues.js:97:5)

2020-07-25T01:00:13.991629+00:00 app[worker.1]: (node:4) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 6)



  


  Here is the code

  


  const ytdl = require("ytdl-core");
const Discord = require("discord.js");

var servers = {};

module.exports = {
  name: "play",
  description: "this is a music play command!",
  execute(message, args) {
  
  function play(connection, message) {
        var server = servers[message.guild.id];
        
        server.dispatcher = connection.play(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[0]) {
      message.channel.send("you need to provide a link!");
      return;
    }

    if (!message.member.voice.channel) {
      message.channel.send("you must be in ||a|| voice channel to play the bot!");
      return;
    }

    if (!servers[message.guild.id]) servers[message.guild.id] = { queue: [] };
    
    var server = servers[message.guild.id];
    
    server.queue.push(args[0]);
     
    if (!message.member.voice.connection) message.member.voice.channel.join().then(function(connection) {
    play(connection, message);
    })
  },
};


  


  I would like to know which directory I should put FFmpeg.

  


  I would also like to know if the FFmpeg executable has to be in a folder or compressed or if i can just place the executable in a certain directory

  


  I am hosting my bot using Heroku on a Mac using Discord.js V12

  


  Please help.

  


  Thanks !