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• Adding chapters to MP4 files, and being identified on iOS 12 podcast app

  5 avril 2019, par Craig Francis

  I have an MP4 file, where I’ve added chapters via ffmpeg.

  But in the iOS 12 Podcasts app, from Apple, the chapters don’t appear. This should happen, as noted by idownloadblog.com

  

  In comparison, when using QuickLook on MacOS, the list of chapters can be seen by clicking the chapters button (in the bottom right hand side of the window).

  

  And opening in QuickTime Player, while there isn’t a list of chapters to view, you can use the "View > Next Chapter" menu item.

  So I’m assuming this is a bug in iOS... but I’m wondering if there is another way to add chapters ? or if I’ve made a mistake ?

  ---

  My current process is to create a "ffmetadata" file, as noted in the ffmpeg documentation :

  ;FFMETADATA1
  
  title=Example
  
  
  
  [CHAPTER]
  
  TIMEBASE=1/1000
  
  START=0
  
  END=221913
  
  title=Chapter 1
  
  
  
  [CHAPTER]
  
  TIMEBASE=1/1000
  
  START=221913
  
  END=1169241
  
  title=Chapter 2

  https://ffmpeg.org/ffmpeg-formats.html#Metadata-1

  Then I’ve tried each of the following commands :

  ffmpeg -i 2019-01-02.mp4 -i 2019-01-02.meta -map_metadata 1 -codec copy 2019-01-02-chapters.mp4
  
  ffmpeg -i 2019-01-02.mp4 -i 2019-01-02.meta -map_metadata 1 2019-01-02-chapters.mp4
  
  ffmpeg -i 2019-01-02.mp4 -i 2019-01-02.meta -map_metadata 1 2019-01-02-chapters.mp3

  • The first one is from the ffmpeg documentation, where -codec copy means the audio file is not re-encoded.
  • The second one takes longer, while it re-encodes the audio data.
  • The third one requires re-encoding to convert it into an MP3 file (which uses ID3 tags for the chapter data).

  ---

  On a slightly unrelated note, the third party app "RSSRadio" does list the chapters, but the feature added in version 4 that allows you to "skip directly to the start of the next chapter", if the next chapter starts within the next 3 minutes, does not seem to work.

• Need Help Making Java Script Discord Music Bot

  22 octobre 2018, par Gambino

  I have tried to use this code to make a discord music bot but i am getting error telling me i need ffmpeg, but how would I implement it into this code ?

  index.js file

  const Discord = require('discord.js');
  
  const bot = new Discord.Client();
  
  const config = require("./config.json");
  
  const ytdl = require('ytdl-core');
  
  
  
  var youtube = require('./youtube.js');
  
  
  
  
  
  var ytAudioQueue = [];
  
  var dispatcher = null;
  
  
  
  bot.on('message', function(message) {
  
      var messageParts = message.content.split(' ');
  
      var command = messageParts[0].toLowerCase();
  
      var parameters = messageParts.splice(1, messageParts.length);
  
  
  
      switch (command) {
  
  
  
          case "-join" : 
  
          message.reply("Attempting to join channel " + parameters[0]);
  
          JoinCommand(parameters[0], message);
  
          break;
  
      
  
          case "-play" :
  
          PlayCommand(parameters.join(" "), message);
  
          break;
  
  
  
          case "-playqueue":
  
          PlayQueueCommand(message);
  
          break;
  
      }
  
  });
  
  
  
  
  
      function PlayCommand(searchTerm) {
  
          if(bot.voiceConnections.array().length == 0) {
  
              var defaultVoiceChannel = bot.channels.find(val => val.type === 'voice').name;
  
              JoinCommand(defaultVoiceChannel);
  
          }
  
          youtube.search(searchTerm, QueueYtAudioStream);
  
      }
  
  
  
      function PlayQueueCommand(message) {
  
          var queueString = "";
  
  
  
          for(var x = 0; x < ytAudioQueue.length; x++) {
  
              queueString += ytAudioQueue[x].videoName + ", ";
  
          }
  
          queueString = queueString.substring(0, queueString.length - 2);
  
          message.reply(queueString);
  
      }
  
  
  
      function JoinCommand(ChannelName) {
  
          var voiceChannel = GetChannelByName(ChannelName);
  
  
  
          if (voiceChannel) {
  
              voiceChannel.join();
  
              console.log("Joined " + voiceChannel.name);
  
          }
  
          
  
          return voiceChannel;
  
          
  
      }
  
  
  
      /* Helper Methods */
  
  
  
      function GetChannelByName(name) {
  
          var channel = bot.channels.find(val => val.name === name);
  
          return channel;
  
      }
  
  
  
    
  
  
  
      function QueueYtAudioStream(videoId, videoName) {
  
          var streamUrl = youtube.watchVideoUrl + videoId;
  
  
  
          if (!ytAudioQueue.length) {
  
              ytAudioQueue.push(
  
                  {
  
                      'streamUrl' : streamUrl,
  
                      'videoName' : videoName
  
                  }
  
              );
  
              console.log('Queued audio ' + videoName);
  
              PlayStream(ytAudioQueue[0].streamUrl);
  
          }
  
          else {
  
              ytAudioQueue.push(
  
                  {
  
                      'streamUrl' : streamUrl,
  
                      'videoName' : videoName
  
                  }
  
              );
  
          }
  
          console.log("Queued audio " + videoName);
  
      }
  
  
  
      function PlayStream(streamUrl) {
  
          const streamOptions = {seek: 0, volume: 1};
  
  
  
          if (streamUrl) {
  
              const stream = ytdl(streamUrl, {filter: 'audioonly'});
  
  
  
              if (dispatcher == null) {
  
                  var voiceConnection = bot.voiceConnections.first();
  
  
  
                  if(voiceConnection) {
  
                      console.log("Now Playing " + ytAudioQueue[0].videoname);
  
                      dispatcher = bot.voiceConnections.first().playStream(stream, streamOptions);
  
  
  
                      dispatcher.on('end', () => {
  
                          dispatcher = null;
  
                          PlayNextStreamInQueue();
  
                      });
  
  
  
                      dispatcher.on('error', (err) => {
  
                          console.log(err);
  
                      });
  
                  }
  
              } else {
  
                  dispatcher = bot.voiceConnections.first().playStream(stream, streamOptions);
  
              }
  
              
  
          }
  
      }
  
  
  
      function PlayNextStreamInQueue() {
  
          ytAudioQueue.splice(0, 1);
  
  
  
          if (ytAudioQueue.length != 0) {
  
              console.log("now Playing " + ytAudioQueue[0].videoName);
  
              PlayStream(ytAudioQueue[0].streamUrl);
  
          }
  
      }
  
  
  
  
  
  bot.login(config.token);

  youtube.js file

  var request = require('superagent');
  
  
  
  const API_KEY = "My API KEY";
  
  const WATCH_VIDEO_URL = "https://www.youtube.com/watch?v=";
  
  
  
  exports.watchVideoUrl = WATCH_VIDEO_URL;
  
  
  
  exports.search = function search(searchKeywords, callback) {
  
    var requestUrl = 'https://www.googleapis.com/youtube/v3/search' + '?part=snippet&q=' + escape(searchKeywords) + '&key=' + API_KEY;
  
  
  
    request(requestUrl, (error, response) => {
  
      if (!error && response.statusCode == 200) {
  
  
  
        var body = response.body;
  
        if (body.items.length == 0) {
  
          console.log("I Could Not Find Anything!");
  
          return;
  
        }
  
        for (var item of body.items) {
  
          if (item.id.kind == 'youtube#video') {
  
            callback(item.id.videoId, item.snippet.title);
  
            return;
  
          }
  
        }
  
      } else {
  
        console.log("Unexpected error!");
  
        return;
  
      }
  
    });
  
  
  
    return;
  
  
  
  };

  Error I am getting when I try to run code :

  Joined General

  C :\Discord Bot\node_modules\discord.js\src\client\voice\pcm\FfmpegConverterEngine.

  js:80

  throw new Error(

  ^

  Error : FFMPEG was not found on your system, so audio cannot be played. Please make
  sure FFMPEG is installed and in your PATH.

• Python Youtube ffmpeg Session Has Been Invalidated

  14 août 2020, par Daniel

  I get the following error while I'm playing YouTube audio with my bot

  



  [tls @ 0000024ef8c4d480] Error in the pull function.
[matroska,webm @ 0000024ef8c4a400] Read error
[tls @ 0000024ef8c4d480] The specified session has been invalidated for some reason.
    Last message repeated 1 times


  



  It seems like YouTube links expire ? I don't really know but I need to fix this issue. This is my code :

  



      class YTDLSource(discord.PCMVolumeTransformer):

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

            self.title = data['title']
            self.description = data['description']
            self.uploader = data['uploader']
            self.duration = data['duration']
            self.web_url = data['webpage_url']
            self.thumbnail = data['thumbnail']

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

        @classmethod
        async def create_source(cls, ctx, player, search: str, *, loop, download=True):
            async with ctx.typing():
                loop = loop or asyncio.get_event_loop()
                to_run = partial(ytdl.extract_info, url=search, download=download)
                raw_data = await loop.run_in_executor(None, to_run)

                if 'entries' in raw_data:
                    # take first item from a playlist
                    if len(raw_data['entries']) == 1:
                        data = raw_data['entries'][0]
                    else:
                        data = raw_data['entries']
                        #loops entries to grab each video_url
                        total_duration = 0
                        try:
                            for i in data:
                                webpage = i['webpage_url']
                                title = i['title']
                                description = i['description']
                                uploader = i['uploader']
                                duration = i['duration']
                                thumbnail = i['thumbnail']
                                total_duration += duration

                                if download:
                                    source = ytdl.prepare_filename(i)
                                    source = cls(discord.FFmpegPCMAudio(source), data=i, requester=ctx.author)
                                else:
                                    source = {'webpage_url': webpage, 'requester': ctx.author, 'title': title, 'uploader': uploader, 'description': description, 'duration': duration, 'thumbnail': thumbnail}

                                player.queue.append(source)

                        except Exception as e:
                            print(e)
                            return

                        embed=discord.Embed(title="Playlist", description="Queued", color=0x30a4fb, timestamp=datetime.now(timezone.utc))
                        embed.set_author(name=ctx.author.display_name, icon_url=ctx.author.avatar_url)
                        embed.set_thumbnail(url=data[0]['thumbnail'])
                        embed.add_field(name=raw_data['title'], value=f"{len(data)} videos queued.", inline=True)
                        embed.set_footer(text=raw_data["uploader"] + ' - ' + '{0[0]}m {0[1]}s'.format(divmod(total_duration, 60)))
                        await ctx.send(embed=embed)
                        return

                embed=discord.Embed(title="Playlist", description="Queued", color=0x30a4fb, timestamp=datetime.now(timezone.utc))
                embed.set_author(name=ctx.author.display_name, icon_url=ctx.author.avatar_url)
                embed.set_thumbnail(url=data['thumbnail'])
                embed.add_field(name=data['title'], value=(data["description"][:72] + (data["description"][72:] and '...')), inline=True)
                embed.set_footer(text=data["uploader"] + ' - ' + '{0[0]}m {0[1]}s'.format(divmod(data["duration"], 60)))
                await ctx.send(embed=embed)

                if download:
                    source = ytdl.prepare_filename(data)
                else:
                    source = {'webpage_url': data['webpage_url'], 'requester': ctx.author, 'title': data['title'], 'uploader': data['uploader'], 'description': data['description'], 'duration': data['duration'], 'thumbnail': data['thumbnail']}
                    player.queue.append(source)
                    return

                source = cls(discord.FFmpegPCMAudio(source), data=data, requester=ctx.author)
                player.queue.append(source)


        @classmethod
        async def regather_stream(cls, data, *, loop):
            loop = loop or asyncio.get_event_loop()
            requester = data['requester']

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

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


  



  I'm using the rewrite branch of discord.py for the bot.
I'm not sure if I need to provide more details ? Please let me know, I really need to get this fixed...