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• VLC libx264 streaming muxed as FLV

  24 mars 2012, par Jan Novák

  I have a question on streaming output of libx264. My scenario is that Iam capturing video from webcam, encoding with x264 and then streaming data to flash, muxed as FLV. For muxing, Im using output/flv_bitstream.h, included in libx264 budle. The only modification of muxer, that I made, is that instead of fwrite() im usig send() to transfer data via socket... Encoding library is working fine. If I save output (even muxed), vlc player is able to play it. But, when it goes to data transfer via socket, vlc and flash are not cooperating. The weird thig is, that if Im sending data to vlc player thru socket, it waits till transmission end and then plays video from buffer. But what I need is to play live stream.

  I also tryed to read flv file and send it to vlc of flash tag by tag and it is working fine.

  Any suggestions ?

• My own music bot randomly stops when playing a song, no errors, just like the song has ended

  18 avril 2019, par Stasio

  I made a discord music bot but there is one problem :
  When i play something it works perfectly for a moment but then sometimes music ends in the middle of the song just like the song has ended.
  When there are some songs in queue and this bug happens the bot starts playing another song from the queue. Im using ffmpeg, ytdl-core, simple-youtube-api,
  opusscript. What do u guys think about it ? I don’t think that this problem is caused by my code cuz this error happens randomly, sometimes 3 songs in a row are played normaly and sometimes it crashes in the middle of the 1 song, so he starts playing the next song in queue.

  const arg = msg.content.split(' ');
  
  const searchString = arg.slice(1).join(' ');
  
  const url = arg[1] ? arg[1].replace(/<(.+)>/g, '$1') : '';
  
  const serverQueue = queue.get(msg.guild.id);
  
  
  
  let command = msg.content.toLowerCase().split(' ')[0];
  
  command = command.slice(PREFIX.length)
  
  
  
  if (command === 'play' || command === 'p') {
  
  msg.delete()
  
  const voiceChannel = msg.member.voiceChannel;
  
  let emoji = msg.guild.emojis.find(x => x.name === "2Head")
  
      if (!voiceChannel) return msg.channel.send('Nie jesteś nawet na kanale głosowym zjebie ' + emoji);
  
      const permissions = voiceChannel.permissionsFor(msg.client.user);
  
      if (!permissions.has('CONNECT')) {
  
          return msg.channel.send('Nie mam permisji zeby sie polaczyc ;/');
  
      }
  
      if (!permissions.has('SPEAK')) {
  
          return msg.channel.send('Nie moge mowic odmutujcie mnie : )');
  
      }
  
  
  
      if (url.match(/^https?:\/\/(www.youtube.com|youtube.com)\/playlist(.*)$/)) {
  
          const playlist = await youtube.getPlaylist(url);
  
          const videos = await playlist.getVideos();
  
          for (const video of Object.values(videos)) {
  
              const video2 = await youtube.getVideoByID(video.id); 
  
              await handleVideo(video2, msg, voiceChannel, true); 
  
          }
  
          return msg.channel.send(`✅ Playlist: **${playlist.title}** has been added to the queue!`);
  
      } else {
  
          try {
  
              var video = await youtube.getVideo(url);
  
          } catch (error) {
  
              try {
  
                  var videos = await youtube.searchVideos(searchString, 1);
  
                  var video = await youtube.getVideoByID(videos[0].id);
  
              } catch (err) {
  
        console.error(err);
  
        let emoji = msg.guild.emojis.find(x => x.name === "autism")
  
                  return msg.channel.send('Nie ma takiego filmu na całym youtubie ' + emoji );
  
              }
  
          }
  
          return handleVideo(video, msg, voiceChannel);
  
      }
  
  } 

• mlt melt image slideshow from text file

  19 février 2019, par Rich

  On my site I have ffmpeg set up to convert a list of image paths from a text file into a slideshow like so —

  My text looks something like this (actual file names are not sequential) -

  ffconcat version 1.0
  
  file 'IMG.PNG'
  
  file 'IMG2.JPG'
  
  file 'IMG3.PNG/'

  And the paths from that file I send it to my ffmpeg command —

  ffmpeg -safe 0 -f concat -i paths.txt \
  
  -c:v libx264 -vsync vfr -pix_fmt yuv420p \
  
  -movflags +faststart -y output.mp4 2>&1

  It works fine, but now I am trying to do the same with the mlt/melt framework. Right now I have a simple command working with placeholder images —

  melt \
  
  placeholder.png length=200 \
  
  inside.png length=200 \
  
  placeholder.png length=200 \
  
  -consumer avformat:"output.mp4"

  Any ideas on how to send from a text file ?