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• Discord JS dispatcher goes immediately on finish

  2 juillet 2021, par JonJon

  I experienced some issues with my Discord bot. I want to play a mp3-file in a voice channel. But the dispatcher goes immediately on status 'finish' and the song doesn't play. There are no errors. First I thought that ffmpeg might be the problem. But ffmpeg seems to work fine. Then I tried reinstalling nodejs. This didn't work out as well. The code can't be the problem as well, because it worked fine last week.
Has anyone an idea ?
Code :

  


  


  


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

client.login('token');

client.on('message', async msg =>{
    if(msg.content === 'play'){
        msg.reply('playing');
        const connection =  await msg.member.voice.channel.join();

        const player = connection.play('musik.mp3');

        player.on('finish', () => {
            msg.member.voice.channel.leave();
        });
    }
});

  


  


  



• ffmpeg output always has frozen parts of the output mp4

  5 mai 2022, par bein

  So a little clarification i have a folder of videos that i want to combine into one. Ive looked at multiple overflows and everything i try ends up with an error. The first few videos work then on the later ones its just frozen. I can still however hear the audio. I currently have this as my video.js...

  


  import { exec } from 'child_process';
import * as fs from 'fs';

let folders = fs.readdirSync('./videos')


folders.forEach(element => {
    if(element != '.DS_Store'){
        let videos = fs.readdirSync('./videos/'+element)

        fs.writeFileSync('./videos/'+element+'/list.txt','')
        
        try {
            fs.rmSync('./videos/'+element+'/combined.mp4')
        } catch (error) {
            //console.log(error)
        }

        let list = ''
        
        videos.forEach(video => {
            if(video != 'list.txt' && video != '.DS_Store' && video != 'combined.mp4'){
                fs.appendFileSync('./videos/'+element+'/list.txt',('file '+video+'\n'))


                list += `file ${video}`
                list += "\n"




            
            }
        });

        var writeStream = fs.createWriteStream('./videos/'+element+'/list.txt')

        writeStream.write(list)

        writeStream.end()


        exec(`ffmpeg -hwaccel d3d11va -safe 0 -ss 0 -f concat -i  ${'./videos/'+element+'/list.txt'}  -c copy -copyinkf -vsync 1 -s 1920x1080 -sws_flags lanczos -c:v h264 ${'./videos/'+element+'/combined.mp4'}`, {maxBuffer: 1024 * 100000},(error, stdout, stderr) => {
            if (error) {
                console.log(`error: ${error.message}`);
                return;
            }
            else{
                console.log("videos are successfully merged")
        }
            
        })
    }
});


  


  Any Ideas ? Tried both on Mac and Windows

  


• Build a C++ project with OpenCV 4.5.x in Visual Studio with custom flags for ffmpeg

  18 mai 2022, par Ivy Growing

  Our C++ project in MS Visual Studio under Windows 10 uses OpenCV 4.5.

  


  #include <opencv2></opencv2>opencv.hpp>&#xA;#include <opencv2></opencv2>videoio.hpp>&#xA;#include <opencv2></opencv2>imgcodecs.hpp>&#xA;#include "opencv2/highgui/highgui.hpp"&#xA;#include "opencv2/core/core.hpp"&#xA;

  


  The project works well. The OpenCV uses ffmpeg as dependency for extracting video frames from a stream or a file. Our legals require following flags are not used when compiling the ffmpeg to approve the product release :

  


  

  • without --enable-gpl

  


  • without --enable-nonfree

  


  


  So far this page gets close to the answer, however, I cannot understand how to configure the Visual Studio to use custom flags just for ffmpeg and not for other dependencies. Elaboration is appreciated.

  


  The Visual Studio has challenging and pretty confusing (for me in person, often) menues and settings. This is the root of the question :

  


  How/where in Visual Studio can I see which flags are used for compiling of dependent libraries ?
Specifically, how can I check which flags are used in OpenCV to build the ffmpeg ?