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• 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.

• Looking for a general purpose way to merge audio and video file and make an output have stereo audio with FFmpeg

  21 février 2020, par Pineapple Joe

  So have have the following FFmpeg command

  ffmpeg -i vidab.mp4 -i recab.webm  -filter_complex "[0:a]volume=0.2,apad[A];[1:a][A]amerge[Aout]" -map 0:v -map [Aout] -y mergeab.mp4

  When the input files are played separately their audio is played equally through both headphones.

  But after being merged the audio from the video is on the right side and the audio from the webm file is on the left side.

  I see this in the output when I run the cmd

  [Parsed_amerge_2 @ 0x7fa0faf01bc0] No channel layout for input 1
  
  [Parsed_amerge_2 @ 0x7fa0faf01bc0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels

  How can I adjust this so that the output file has the audio from both the inputs in equally in the left and right sides ?

  Also is there a generic way to do this such that even different configurations (video has stereo and audio has mono ... or both have stereo) result in the Audio being split evenly.

  I tried using the pan filter but there is something I am not understanding about how it works because either nothing happens or I flip left and right. But I am not getting even stereo.

  fwiw here is the full output.

  ffmpeg -i vidab.mp4 -i recab.webm  -filter_complex "[0:a]volume=0.2,apad[A];[1:a][A]amerge[Aout]" -map 0:v -map [Aout] -y mergeab.mp4
  
  ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with Apple clang version 11.0.0 (clang-1100.0.33.8)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include/darwin -fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vidab.mp4':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2020-02-21T00:35:25.000000Z
  
    Duration: 00:00:10.65, start: 0.000000, bitrate: 2539 kb/s
  
      Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 96 kb/s (default)
  
      Metadata:
  
        creation_time   : 2020-02-21T00:35:25.000000Z
  
        handler_name    : Core Media Audio
  
      Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1280x640, 2436 kb/s, 29.87 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        creation_time   : 2020-02-21T00:35:25.000000Z
  
        handler_name    : Core Media Video
  
        encoder         : H.264
  
  Input #1, matroska,webm, from 'recab.webm':
  
    Metadata:
  
      encoder         : opus-media-recorder
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #1:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
  
  Stream mapping:
  
    Stream #0:0 (aac) -> volume (graph 0)
  
    Stream #1:0 (opus) -> amerge:in0 (graph 0)
  
    Stream #0:1 -> #0:0 (h264 (native) -> h264 (libx264))
  
    amerge (graph 0) -> Stream #0:1 (aac)
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x7fa0fb004000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x7fa0fb004000] profile High, level 3.1
  
  [libx264 @ 0x7fa0fb004000] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  [Parsed_amerge_2 @ 0x7fa0faf01bc0] No channel layout for input 1
  
  [Parsed_amerge_2 @ 0x7fa0faf01bc0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
  
  Output #0, mp4, to 'mergeab.mp4':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      encoder         : Lavf58.29.100
  
      Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc, progressive), 1280x640, q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
  
      Metadata:
  
        creation_time   : 2020-02-21T00:35:25.000000Z
  
        handler_name    : Core Media Video
  
        encoder         : Lavc58.54.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        encoder         : Lavc58.54.100 aac
  
  frame=  318 fps=107 q=-1.0 Lsize=    1568kB time=00:00:17.72 bitrate= 724.8kbits/s speed=5.99x    
  
  video:1282kB audio:272kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.902630%
  
  [libx264 @ 0x7fa0fb004000] frame I:2     Avg QP:19.72  size: 51154
  
  [libx264 @ 0x7fa0fb004000] frame P:148   Avg QP:21.28  size:  6644
  
  [libx264 @ 0x7fa0fb004000] frame B:168   Avg QP:25.18  size:  1351
  
  [libx264 @ 0x7fa0fb004000] consecutive B-frames:  1.3% 84.9%  0.0% 13.8%
  
  [libx264 @ 0x7fa0fb004000] mb I  I16..4: 23.2% 49.3% 27.5%
  
  [libx264 @ 0x7fa0fb004000] mb P  I16..4:  2.1%  2.0%  0.2%  P16..4: 29.0%  5.1%  4.8%  0.0%  0.0%    skip:56.8%
  
  [libx264 @ 0x7fa0fb004000] mb B  I16..4:  0.5%  0.3%  0.0%  B16..8: 16.7%  0.8%  0.2%  direct: 6.1%  skip:75.4%  L0:24.8% L1:71.1% BI: 4.1%
  
  [libx264 @ 0x7fa0fb004000] 8x8 transform intra:45.4% inter:74.3%
  
  [libx264 @ 0x7fa0fb004000] coded y,uvDC,uvAC intra: 29.3% 51.4% 11.6% inter: 5.7% 16.6% 0.3%
  
  [libx264 @ 0x7fa0fb004000] i16 v,h,dc,p: 11% 53% 10% 26%
  
  [libx264 @ 0x7fa0fb004000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 36% 35%  2%  2%  2%  4%  2%  3%
  
  [libx264 @ 0x7fa0fb004000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 30% 12%  4%  6%  5%  7%  5%  6%
  
  [libx264 @ 0x7fa0fb004000] i8c dc,h,v,p: 47% 33% 17%  4%
  
  [libx264 @ 0x7fa0fb004000] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fa0fb004000] ref P L0: 76.6%  7.6% 11.1%  4.7%
  
  [libx264 @ 0x7fa0fb004000] ref B L0: 89.1% 10.3%  0.6%
  
  [libx264 @ 0x7fa0fb004000] ref B L1: 99.7%  0.3%
  
  [libx264 @ 0x7fa0fb004000] kb/s:989.60
  
  [aac @ 0x7fa0fb005800] Qavg: 13376.354

• missing audio of second video after combining video

  27 mai 2021, par JohnTerry

  I am trying to add xfade filter and the command is working but audio of second video is missing in output video.

  


  command is -

  


  ffmpeg -i 1.mp4 -i 1.mp4  -filter_complex "[0:v]scale=480:360:force_original_aspect_ratio=decrease,pad=480:360:-1:-1,setsar=1,fps=30,format=yuv420p[v0];[1:v]scale=480:360:force_original_aspect_ratio=decrease,pad=480:360:-1:-1,setsar=1,fps=30,format=yuv420p[v1];
[v0][v1]xfade=transition=pixelize:duration=1:offset=7,format=yuv420p" -c:v libvpx-vp9 -crf 30 -b:v 0 -b:a 128k -c:a libopus -deadline good -cpu-used 8 output.webm


  


  the full log is below-

  


  ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration: --prefix= --prefix=/usr --disable-debug --disable-doc - 
-disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid -- 
enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable- 
libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype 
--enable-libmp3lame --enable-libnpp --enable-libopencore_amrnb -- 
enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-
sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
  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
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:09.12, start: 0.000000, bitrate: 702 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 474x360, 568 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:08.75, start: 0.000000, bitrate: 2546 kb/s
    Stream #1:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 2416 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #1:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 (h264) -> scale (graph 0)
  Stream #1:0 (h264) -> scale (graph 0)
  format (graph 0) -> Stream #0:0 (libvpx-vp9)
  Stream #0:1 -> #0:1 (mp3 (mp3float) -> opus (libopus))
Press [q] to stop, [?] for help
[libvpx-vp9 @ 0x561afcf3a280] v1.7.0
Output #0, webm, to 'output.webm':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.45.100
    Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p, 480x360 [SAR 1:1 DAR 4:3], q=-1--1, 30 fps, 1k tbn, 30 tbc (default)
    Metadata:
      encoder         : Lavc58.91.100 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1(und): Audio: opus (libopus), 48000 Hz, stereo, flt, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      encoder         : Lavc58.91.100 libopus
frame=   87 fps=0.0 q=0.0 size=       1kB time=00:00:03.19 bitrate=   2.1kbits/sframe=  157 fps=156 q=0.0 size=     171kB time=00:00:05.51 bitrate= 254.3kbits/sframe=  227 fps=150 q=0.0 size=     171kB time=00:00:07.85 bitrate= 178.5kbits/sframe=  265 fps=131 q=0.0 size=     171kB time=00:00:08.31 bitrate= 168.7kbits/sframe=  303 fps=120 q=0.0 size=     256kB time=00:00:09.30 bitrate= 225.5kbits/sframe=  341 fps=113 q=0.0 size=     256kB time=00:00:10.56 bitrate= 198.4kbits/sframe=  379 fps=107 q=0.0 size=     256kB time=00:00:11.83 bitrate= 177.2kbits/sframe=  416 fps=103 q=0.0 size=     256kB time=00:00:13.06 bitrate= 160.5kbits/sframe=  454 fps=100 q=0.0 size=     256kB time=00:00:14.33 bitrate= 146.3kbits/sframe=  472 fps= 93 q=0.0 Lsize=    1168kB time=00:00:15.73 bitrate= 608.2kbits/s speed=3.09x    
video:1036kB audio:125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.629681%


  


  when using online url which has no audio getting this error-
getting this error-

  


      ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libnpp --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
  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
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://player.vimeo.com/external/183300180.sd.mp4?s=8d9b1561f39df586af49fe5ab105f57f5873854b&profile_id=164':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41isomavc1
    creation_time   : 2016-09-19T12:39:02.000000Z
  Duration: 00:00:10.00, start: 0.000000, bitrate: 489 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt470bg/smpte170m/bt470bg), 640x360 [SAR 1:1 DAR 16:9], 486 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc (default)
    Metadata:
      creation_time   : 2016-09-19T12:39:02.000000Z
      handler_name    : L-SMASH Video Handler
      encoder         : AVC Coding
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'https://player.vimeo.com/external/166335878.sd.mp4?s=828bf6e8594fab383d7ee6bac40d3f247cc40af9&profile_id=164':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41isomavc1
    creation_time   : 2016-05-12T09:34:11.000000Z
  Duration: 00:00:10.01, start: 0.000000, bitrate: 479 kb/s
    Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt470bg/smpte170m/bt470bg), 474x360 [SAR 1:1 DAR 79:60], 345 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc (default)
    Metadata:
      creation_time   : 2016-05-12T09:34:11.000000Z
      handler_name    : L-SMASH Video Handler
      encoder         : AVC Coding
    Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2016-05-12T09:34:11.000000Z
      handler_name    : L-SMASH Audio Handler
Stream specifier ':a' in filtergraph description [0:v]scale=614:360:force_original_aspect_ratio=decrease,pad=614:360:-1:-1,setsar=1,fps=30,format=yuv420p[v0];[1:v]scale=614:360:force_original_aspect_ratio=decrease,pad=614:360:-1:-1,setsar=1,fps=30,format=yuv420p[v1];[v0][v1]xfade=transition=pixelize:duration=1:offset=8,format=yuv420p;[0:a][1:a]acrossfade=d=0 matches no streams.