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• Video compression ffmpeg node js in multiple user ?

  12 octobre 2022, par jatin.rathod

  i have one query i am using ffmpeg packaege in node js to compress video in server side. but my question is when multiple user like 100k upload video in same time so it will work compression then upload part. currently have check 2 or 3 user it is working fine. Thanks Advance

  


  


  


  const ffmpeg = require('fluent-ffmpeg');
const ffmpegInstaller = require('@ffmpeg-installer/ffmpeg');
ffmpeg.setFfmpegPath(ffmpegInstaller.path);
const fs = require('fs');
// var filename = 'videos/big_buck_bunny_480p_10mb.mp4';

(function () {
    
    var ffmpeg = require('fluent-ffmpeg');
    function baseName(str) {
        var base = new String(str).substring(str.lastIndexOf('/') + 1); 
        if(base.lastIndexOf(".") != -1) {
            base = base.substring(0, base.lastIndexOf("."));
        }     
        return base;
    }

    var args = process.argv.slice(2);
    args.forEach(function (val, index, array) {
        var filename = val;
        var basename = baseName(filename);
        console.log(index + ': Input File ... ' + filename);
        
        ffmpeg(filename)
            // .output(basename + '-720x720_8.mp4')
            // .videoCodec('libx264')
            // //.noAudio()
            // // .aspect("1:1")
            // //.size('720x720')
            // .videoFilters('crop=540:960:540:960')
            // .videoFilters('crop=540:960')
            //.noAudio()
            //.aspect("1:1")
            //.aspectRatio("16:9")
            //.size('720x720')
            //.videoFilters('crop=720:720:580:1000')
            //.addOption('-vf scale=-2:720')
            //.videoFilters('crop=720:720:0:0.21')
            //.addOption('-vf setdar=1')
           //.videoFilters('crop=720:720:-540:960')
            //.preset('divx')

            .output(basename + '-720x720_22.mp4')
            .videoCodec('libx264')
            .addOption('-vf scale=720:-2') // landscap
            //.addOption('-vf scale=-2:720') // portrait

            //.addOption('-vf scale=480:480') // rectangle

           

            .on('error', function(err) {
                console.log('An error occurred: ' + err.message);
                
            })  
            .on('progress', function(progress) { 
                console.log('... frames: ' + progress.frames);
                
            })
            .on('end', function() { 
                console.log('Finished processing'); 
                
            })
            .run();
        
    }); 
    
})();

  


  


  



• Issue with video compression using HLS from laravel protonemedia/laravel-ffmpeg package

  29 mars 2023, par Mateo Kantoci

  I'm using laravel-ffmpeg package in order to compress videos and save it as .m3u8.
In another words, I have a job that is gathering all uncompressed files and compress them 1by1 and save them to google cloud storage. Furthermore, compression is using exportForHLS from package and throws an error :

  


  ProtoneMedia\LaravelFFMpeg\Exporters\HLSPlaylistGenerator::getStreamInfoLine(): Return value must be of type string, null returned in /var/www/html/ipaparazzo/vendor/pbmedia/laravel-ffmpeg/src/Exporters/HLSPlaylistGenerator.php:32


  


  In some cases compression works but my job is failing for most of the time.

  


  Anyone experienced similar issue ?

  


  P.S. It is working as expected when using public storage.

  


  This is my code exactly as per laravel-ffmpeg documentation :

  


  ->exportForHLS()
->setSegmentLength(10) // optional
->setKeyFrameInterval(48) // optional
->addFormat($lowBitrate, function($media) {
    $media->scale(426, 240);
})
->addFormat($midBitrate, function($media) {
    $media->scale(640, 360);
})
->addFormat($highBitrate, function($media) {
    $media->scale(640, 480);
})
->onProgress(function ($percentage) {
   echo "{$percentage}% transcoded\n";
})
->toDisk('gcs2')
->save($videoPath)
->cleanupTemporaryFiles();


  


• As part of my program that I am writing I am using ffmpeg. I am debugging. Why would ffmpeg run slower on a GPU than a CPU when doing mp4 compression ? [closed]

  6 mai 2023, par user875234

  I'm running it on modern equipment with latest drivers. I use it to compress video files, like so :

  


  ffmpeg -i 20230502_200913.mp4 -vcodec libx265 -crf 28 -vf "scale=trunc(iw/10)*2:trunc(ih/10)*2" output.mp4


  


  that command runs in 160 seconds on the CPU. but if I use the GPU, like so :

  


  ffmpeg -hwaccel cuda -i 20230502_200913.mp4 -vcodec libx265 -crf 28 -vf "scale=trunc(iw/10)*2:trunc(ih/10)*2" output.mp4


  


  it actually takes 280 seconds. And again, these are same era CPU and GPU. I can see it uses 100% of the GPU when running on the GPU but only 50% of the CPU when running on the CPU. I expected it to run much faster on the GPU than the CPU.

  


  Am I missing something ?