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• FFMPEG incorrect duration from raw video stream

  28 juillet 2020, par LMB

  I have the raw video data from a video stream (no audio) and the duration when I play the raw video in VLC is 67 seconds. When I convert the file to MP4 using FFMPEG the duration is 82.68 seconds.

  


  Video is available here : https://www.filedropper.com/showdownload.php/67seconds
I am using FFMPEG/FFPROBE version git-2020-07-21-b5f1e05 on Windows.

  


  Details of the raw video here :

  


  ffprobe -i 67seconds.raw
ffprobe version git-2020-07-21-b5f1e05 Copyright (c) 2007-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200621
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 55.100 / 56. 55.100
  libavcodec     58. 97.100 / 58. 97.100
  libavformat    58. 49.100 / 58. 49.100
  libavdevice    58. 11.101 / 58. 11.101
  libavfilter     7. 87.100 /  7. 87.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
Input #0, h264, from '67seconds.raw':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 640x360 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 1200k tbn, 50 tbc


  


  The mp4 duration matches my ffprobe calculation against the raw file itself (2067/25 = 82.68 seconds) :

  


  ffprobe -show_entries stream=r_frame_rate,nb_read_frames -select_streams v -count_frames -of compact=p=0:nk=1 -v 0 67seconds.raw
25/1|2067


  


  What would explain this difference in durations between the raw playback and the FFMPEG interpretation and how do I encode to the same duration for this and other stream data ?

  


• 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 !

  


• Why is my discord.py bot not having voice while being hosted on Heroku ?

  24 juillet 2020, par Flying Thunder

  My bot is all set up and running, everything works, EXCEPT for voice : He joins the channel, but doesnt play audio. I have heard many different claims for what the reason is (no permission to use ffmpeg.exe, missing buildpack, missing dependency, Heroku blocking UDP on free users...) - but i hope that someone here ACTUALLY knows what the problem is, because i couldnt find any definitive reason online.

  


  This is the code of the bot : https://github.com/FlyingThunder/DiscordBot/blob/master/main.py
Everything is working fine on my machine.
This is the only error that Heroku logs gave me :
2020-07-24T06:28:30.329937+00:00 app[worker.1]: PermissionError: [Errno 13] Permission denied: 'res/ffmpeg.exe'

  


  I already tried adding https://github.com/jonathanong/heroku-buildpack-ffmpeg-latest.git to my buildpacks, and i added cffi==1.14.0 to my requirements.txt - both solutions that are supposed to fix this exact issue.