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• ffmpeg : consider increasing probesize error, but it is never satisfied

  27 janvier 2021, par Jaz

  I was trying to use an Arch solution for streaming to twitch today through FFMPEG, but all of my attempts were in vain because of one simple thing on FFMPEG. it says that the probesize is not large enough, so I instinctively increased the probesize value more and more... and now it is -probesize "500M" yet it is still saying it is not enough. here is the code snippet

  


  [x11grab @ 0x5631f846cd00] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':0.0':
  Duration: N/A, start: 1603397505.341400, bitrate: 1007124 kb/s
    Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1366x768, 1007124 kb/s, 30 fps, 1000k tbr, 1000k tbn, 1000k tbc
0: Input/output error


  


  and the code

  


  #!/bin/bash
     INRES="1366x768" # input resolution
     OUTRES="1366x768" # output resolution
     FPS="30" # target FPS
     GOP="60" # i-frame interval, should be double of FPS,
     GOPMIN="30" # min i-frame interval, should be equal to fps,
     THREADS="2" # max 6
     CBR="1000k" # constant bitrate (should be between 1000k - 3000k)
     QUALITY="ultrafast"  # one of the many FFMPEG preset
     AUDIO_RATE="44100"
     PROBESZ="500M" # specify a size for the ffmpeg tool to assess frames
     STREAM_KEY="$1" # paste the stream key after calling stream_now
     SERVER="live-mia" # twitch server in miami Florida, see https://stream.twitch.tv/ingests/ for list

     ffmpeg -f x11grab -s "$INRES" -r "$FPS" -i :0.0 -f pulse -i 0 -f flv -ac 2 -ar $AUDIO_RATE \
       -vcodec libx264 -g $GOP -keyint_min $GOPMIN -b:v $CBR -minrate $CBR -maxrate $CBR -pix_fmt yuv420p\
       -s $OUTRES -preset $QUALITY -tune film -acodec aac -threads $THREADS -strict normal \
       -bufsize $CBR -probesize $PROBESZ "rtmp://$SERVER.twitch.tv/app/$STREAM_KEY"


  


  even though it was a solution to store in .bashrc, I stored it in a script to call manually.

  


  and if this is helpful, here is the fancy banner ffmpeg shows before the error

  


  ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10.1.0 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librav1e --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100


  


• Music bot doesn't play livestreams anymore

  31 janvier 2019, par Silvinator

  My Discord bot played YT Livestreams all the time, but it stopped working today. The only message I get (in the console) is stream. It plays normal videos, but no streams.
  The question is, why it stopped working ? I did not change any code. Anyone got a idea ?

  client.on("message", async message => {
  
    var args = message.content.substring(prefix.length).split(" ");
  
    if (!message.content.startsWith(prefix)) return;
  
    var searchString = args.slice(1).join(' ');
  
    var url = args[1] ? args[1].replace(/<(.+)>/g, '$1') : '';
  
    var serverQueue = queue.get(message.guild.id);
  
    switch (args[0].toLowerCase()) {
  
      case "play":
  
        var voiceChannel = message.member.voiceChannel;
  
        if (!voiceChannel) return message.channel.send(`Du willst mit mir Karaoke singen? Da ich eh nichts besseres zu tun habe. Du suchst aber den Voice Channel aus!`);
  
        var permissions = voiceChannel.permissionsFor(message.client.user);
  
        if (!permissions.has('CONNECT')) {
  
          return message.channel.send('I cannot connect to your voice channel, make sure I have the proper permissions!');
  
        }
  
        if (!permissions.has('SPEAK')) {
  
          return message.channel.send('I cannot speak in this voice channel, make sure I have the proper permissions!');
  
        }
  
        if (url.match(/^https?:\/\/(www.youtube.com|youtube.com)\/playlist(.*)$/)) {
  
          var playlist = await youtube.getPlaylist(url);
  
          var videos = await playlist.getVideos();
  
          for (const video of Object.values(videos)) {
  
            var video2 = await youtube.getVideoByID(video.id); // eslint-disable-line no-await-in-loop
  
            await handleVideo(video2, message, voiceChannel, true); // eslint-disable-line no-await-in-loop
  
          }
  
          return message.channel.send(`Ich habe wohl keine andere wahl... Ich habe **${playlist.title}** der playlist zugefügt`);
  
        } else {
  
          try {
  
            var video = await youtube.getVideo(url);
  
          } catch (error) {
  
            try {
  
              var videos = await youtube.searchVideos(searchString, 10);
  
              var index = 0;
  
              var videoIndex = 1;
  
              var video = await youtube.getVideoByID(videos[videoIndex - 1].id);
  
            } catch (err) {
  
              console.error(err);
  
              return message.channel.send('Gibt es den Song überhaupt?');
  
            }
  
          }
  
          return handleVideo(video, message, voiceChannel);
  
        }
  
        break;
  
      case "skip":
  
        if (!message.member.voiceChannel) return message.channel.send('Du musst schon in den Voice Channel gehen, baka!');
  
        if (!serverQueue) return message.channel.send('Du musst schon ein song auswählen, baka!');
  
        serverQueue.connection.dispatcher.end('Skip command has been used!');
  
        return undefined;
  
        break;
  
      case "stop":
  
        if (!message.member.voiceChannel) return message.channel.send('Du musst schon in den Voice Channel gehen, baka!');
  
        if (!serverQueue) return message.channel.send('Du musst schon einen Song auswählen, baka');
  
        serverQueue.connection.dispatcher.end('Stop command has been used!');
  
        serverQueue.songs = [];
  
        return undefined;
  
        break;
  
      case "minfo":
  
        if (!serverQueue) return message.channel.send('Ich spiele immer noch nichts!');
  
        return message.channel.send(`ퟎ

• Having audio sync issues after concatenating several mp4 with and without sound

  19 décembre 2019, par CYRUS

  I’m posting today because I have a problem when I use ffmpeg. I have a small program that creates mp4 files for me, often with sounds and sometimes without, until now I used ffmpeg to concatenate them.

  But I just realized that if I have an mp4 file that doesn’t contain audio then the whole audio track of the final file goes out of sync. This only happens when I have some mp4 files that don’t have audio. I think it’s also useful to know that the program I’m using gives me a lot of mp4 (>20) and I can’t know in advance which ones have audio or not...

  Here is the code I use, I saw on the forum that the mp4 format was badly managed and that it was better to use ts format for concatenation that’s why I do this

  for f in $(ls *.mp4); do
  
     ffmpeg -i $f -c copy -bsf:v h264_mp4toannexb -f mpegts $f.ts
  
  done
  
  
  
  CONCAT=$(echo $(ls *.ts ) | sed -e "s/ /|/g")
  
  
  
  ffmpeg -analyzeduration 2147483647 -probesize 2147483647 -i "concat:$CONCAT" -c copy output.ts
  
  ffmpeg -analyzeduration 2147483647 -probesize 2147483647 -i output.ts -acodec copy -vcodec copy output.mp4

  I noticed that when the final file goes out of sync this error appears :

  Input #0, mpegts, from 'concat:video0.mp4.ts|video01.mp4.ts|video012.mp4.ts|video0123.mp4.ts|video01234.mp4.ts|video012345.mp4.ts|video0123456.mp4.ts|video01234567.mp4.ts|video012345678.mp4.ts|video0123456789.mp4.ts|video012345678910.mp4.ts|video01234567891011.mp4.ts|video0123456789101112.mp4.ts|video012345678910111213.mp4.ts|video01234567891011121314.mp4.ts|video0123456789101112131415.mp4.ts|video012345678910111213141516.mp4.ts|video01234567891011121314151617.mp4.ts|video0123456789101112131415161718.mp4.ts|video012345678910111213141516171819.mp4.ts|zzzz.mp4.ts':
  
    Duration: 00:00:05.02, start: 1.420222, bitrate: 63089 kb/s
  
    Program 1 
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
      Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 640x1136, 30 fps, 240 tbr, 90k tbn, 60 tbc
  
      Stream #0:1[0x101](und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp, 145 kb/s
  
  Output #0, mpegts, to 'output.ts':
  
    Metadata:
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 640x1136, q=2-31, 30 fps, 240 tbr, 90k tbn, 90k tbc
  
      Stream #0:1(und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp, 145 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  [mpegts @ 0x7f9c68800000] DTS 130180 < 573000 out of order <-- HERE
  
  [mpegts @ 0x7f9c68800000] DTS 130180 < 654000 out of order <-- HERE
  
  [mpegts @ 0x7f9c68800000] DTS 130180 < 1477180 out of order <-- HERE

  I’ve tried several different combinations of members answer on other topics but nothing worked for me.
  I don’t know if the problem comes from the moment I convert .mp4 files to .ts and I forget to set appropriate codec, or if it comes from the concat command ?

  I’m almost sure that there is a simple way to fix this issue but unfortunately I don’t have enough ffmpeg knowledge.

  Thanks for your help :)

  EDIT 1 :

  I changed the for loop of the programme to :

  for f in $(ls *.mp4); do
  
  
  
      TEST=$(ffprobe -i $f -show_streams -select_streams a -loglevel error)
  
  
  
      if [ "$TEST" ]; then
  
  
  
          ffmpeg -i $f -c copy -bsf:v h264_mp4toannexb -f mpegts $f.ts
  
  
  
      fi
  
  
  
  done

  It only makes the script to ignore the files that don’t have audio, but this way it works, so maybe adding dummy audio to those files could make the job as @Gyan suggested in the comments, but how to do that ?

  EDIT 2 SOLVED

  I found how to add dummy audio on my silent file, that solved my problem this is my final working for loop :

  for f in $(ls *.mp4); do
  
  
  
      TEST=$(ffprobe -i $f -show_streams -select_streams a -loglevel error)
  
  
  
      if [ "$TEST" ]; then
  
  
  
          ffmpeg -i $f -c copy -bsf:v h264_mp4toannexb -f mpegts $f.ts
  
  
  
      else
  
  
  
          ffmpeg -f lavfi -i anullsrc -i $f -shortest -c:v copy -c:a aac -map 0:a -map 1:v $f.a.ts
  
          ffmpeg -i $f.a.ts -c copy -bsf:v h264_mp4toannexb -f mpegts $f.ts
  
          rm $f.a.ts
  
  
  
      fi
  
  
  
  done