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• How to create event listener for ffmpeg video file creation in Electron main process

  18 mai 2021, par Radespy

  Windows 10 Pro
Electron v12


  


  I've created an Electron-React App and am using execFile() in a renderer process to execute an ffmpeg command which results in a cropped video file being created in a temporary folder.

  


  I need to read this video file (from the Main process) and convert to a Base64 string before sending to a database.

  


  In the renderer process, I tried adding on.("close" or "exit") event listeners to perform reading the file after ffmpeg completes the cropping, but this doesn't work. The file is not created by the time the event fires.

  


  I have now added an event listener to the renderer BrowserWindow to wait until the window is closed before attempting to read the video file. The only way this works is by having a sufficient delay between the execFile() command being executed and closure of the window (i.e. in order to make sure that the file has actually been created).

  


  This works but is obviously not ideal as processing speed will be variable.

  


  Is there a way to wait for the video file to be created and only then attempt to read the file ?

  


  Any help will be much appreciated !

  


• node ffmpeg module stuck more than one file

  29 mai 2021, par Muhammad Hamza

  when I read more than one file it will be stuck and also hang my pc. I need to restart my pc

  


  on one file or 5 files it will work perfectly but not more than 5 files

  


  if anyone know this issue let me know

  


  const ffmpegPath = require('@ffmpeg-installer/ffmpeg').path
const ffmpeg = require('fluent-ffmpeg')
ffmpeg.setFfmpegPath(ffmpegPath)


const testFolder = './videos/';
const fs = require('fs');

 


fs.readdir(testFolder, async(err, files) => {
  try {
    for(let i = 0; i < 10; i++){
      if(files[i] != '1 Surah Fatiha Dr Israr Ahmed Urdu - 81of81.mp4'){
        
        let converter = await ffmpeg(`./videos/${files[i]}`)
        await converter.setStartTime('00:00:00').setDuration('30').output(`./outputfolder/${files[i]}`).on('end', function(err) {
        if(err) { 
          console.log(`err durinng conversation \n ${err}`) 
        }
        else{
          console.log(`Done ${files[i]}`);
        }
        }).on('error', function(err){
          console.log(`error: ${files[i]}`, err)
        }).run()
      }
    }
  } catch (error) {
    console.log(error)
  }
});



  


• Mp4 Video File not playing after downloading using Content Disposition php but it plays when it streams directly from the server

  1er juin 2021, par Razor Rassh

  I'm trying to combine a video and audio file using the FFMPEG and it worked successfully for me. The FFMPEG successfully created the MP4 file in the target destination folder. When I'm trying to download the Video file from the destination folder using Content-Disposition in Php. The server successfully downloads the Video file from the exact target folder.

  


  The problem is that when I'm trying to play the video using VLC or any other player, nothing happened. The VLC player just launched and do nothing. I checked the downloaded file size with the video file located on the server and found that they both are the same size.

  


  The code I used for creating Video file and content disposition is,

  


        
      $downloadFolderPath = "/var/www/html/temp/{$downloadFolderName}";
      $result = mkdir($downloadFolderPath, 0777);     
      $downloadFileName = "$downloadFolderPath/$filename";
      //echo $downloadFileName;
      $command = $ffmpeglocation." -i $audio_link -i $link -c:v copy -c:a aac -preset fast -crf 20 $downloadFileName 2>&1";
      shell_exec($command);

      $file=fopen($downloadFileName,'r');
      header("Content-Type:video/mp4");
    
      header("Content-Disposition: attachment; filename=$filename");
         
      header('Content-Description: File Transfer');
      header('Content-Type: application/octet-stream');
       
      header('Content-Disposition: attachment; filename="'.basename($downloadFileName).'"');
      header('Expires: 0');
      header('Cache-Control: must-revalidate');
      header('Pragma: public'); 
      header('Content-Length: ' . filesize($downloadFileName)); 
      flush(); // Flush system output buffer
      readfile($downloadFileName);    
      die();


  


  The above code did its purpose by properly downloading the video file hosted on the server. But after downloading, the video file is not playing. I tried to access the file directly through the URL of the file in the browser and it plays fluently in the browser.

  


  Help me out. Sorry for the bad english.