Recherche avancée

Sur d’autres sites (7632)

• How does one stream (udp) a series of tiff images using ffmpeg ?

  20 avril 2020, par Michael Carey

  I have written a program that receives images from a camera and then packages the images into a basic tiff format. Then I broadcast the tiff image out on UDP on localhost port 8999.

  



  I then run ffmpeg (on Windows 10) from a command line as follows :

  



  ffmpeg -i udp://127.0.0.1:8999 -preset ultrafast -vcodec libx264 -tune zerolatency -f mpegts udp://127.0.0.1:9000


  



  The idea with the above command is to receive the tiff images from my program, convert them into mpeg, and to then rebroadcast it out on a different port. (once I prove this, I may clip and compress the image as well)

  



  Finally, I open another command window and run ffPlay as follows so that I may see my output :

  



  ffplay udp://127.0.0.1:9000


  



  My output from the ffmpeg command is here :

  



  ffmpeg -i udp://127.0.0.1:8999 -preset ultrafast -vcodec libx264 -tune zerolatency -f mpegts udp://127.0.0.1:9000
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  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-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-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  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
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[tiff_pipe @ 0000021ebbe2d280] Could not find codec parameters for stream 0 (Video: tiff, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, tiff_pipe, from 'udp://127.0.0.1:8999':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: tiff, none, 25 tbr, 25 tbn, 25 tbc
Output #0, mpegts, to 'udp://127.0.0.1:9000':
Output file #0 does not contain any stream


  



  Any hints on how to make this work would be greatly appreciated.

  


• When player client starts to play a dash media

  7 juillet 2022, par CoXier

  I'm working on Android Player for playing dash media.

  


  In order to enable video starting fast, I preload a part of dash media, now the size of preload is 600kb.

  


  As you see, 600kb is a magic number. In my opinion, different size should be preloaded for different dash file.

  


  All start position of dash media is 0.

  


  I want to know : How to know the size of dash media which can support player starts to play ?

  


  Thanks for your help.

  


• When I try to play my Music Discord Bot it doesn't play music

  1er juin 2020, par EthanDevelops

  When I try to play my Music Discord Bot it doesn't play music. It uses ytdl-core and ffmpeg
My code is :

  



  const Discord = require('discord.js');
const bot = new Discord.Client

const ytdl = require("ytdl-core")


const token = 'API TOKEN'

const PREFIX = '?';

var version = '1.2';

var servers = {};

bot.on('ready', () =>{
    console.log('This bot is online!' + version);
})

bot.on('message', message => {

    let args = message.content.substring(PREFIX.length).split(" ");

    switch(args[0]){
        case 'play':

            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[1]){
                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[1]);

            if(!message.guild.voice) message.member.voice.channel.join().then(function(connection){
                play(connection, message);
            })

        break;
    }



    });


    bot.login(token);


  



  Whenever I try to play a song this error happens :

  



  


  (node:5180) UnhandledPromiseRejectionWarning : Error : FFmpeg/avconv not
 found !
 at Function.getInfo (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\prism-media\src\core\FFmpeg.js:130:11)
 at Function.create (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\prism-media\src\core\FFmpeg.js:143:38)
 at new FFmpeg (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\prism-media\src\core\FFmpeg.js:44:27)
 at AudioPlayer.playUnknown (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\discord.js\src\client\voice\player\BasePlayer.js:47:20)
 at VoiceConnection.play (C :\Users\picar\Desktop\DiscordMusicBot\node_modules\discord.js\src\client\voice\util\PlayInterface.js:71:28)
 at play (C :\Users\picar\Desktop\DiscordMusicBot\index.js:29:48)
 at C :\Users\picar\Desktop\DiscordMusicBot\index.js:66:17
 at processTicksAndRejections (internal/process/task_queues.js:97:5)
 (node:5180) 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 : 1)
 (node:5180) [DEP0018] DeprecationWarning : Unhandled promise rejections are deprecated. In the future, promise rejections that are
 not handled will terminate the Node.js process with a non-zero exit
 code

  


  



  I'm getting very frustrated as the tutorial I'm watching is using a different version of everything !!! Please help.