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• VMAF-like quality indicator with single video file

  9 septembre 2021, par JeffN

  I am looking for a VMAF-like objective user-perception video quality scanner that functions at scale. The use case is a twitch-like streaming service where videos are eligible to be played on demand after the live stream completes. We want to have some level of quality in the on demand library without having to view every live stream. We are encoding the livestreams into HLS playlists after the stream completes, but using VMAF to compare the post-stream mp4 to the post-encoded mp4s in HLS doesn't provide the information needed as the original mp4 could be of low quality due to bandwidth issues during the live stream.

  


• Is there an effective and cheap/free way to host video for a mobile app that must be approved by an admin before going live ? [on hold]

  9 août 2013, par user2658775

  We are building a mobile app for the iOS and Android operating systems. The app is to be a communication platform for members within an organization. Content is generated by users and submitted to the admin. Once approved by the admin the content is pushed to the app. One feature of the app is the ability to upload video.

  We are having a tough time attempting to figure out the best way to do this. Because the app will be representing the organization, the organization must have control over the approval process.

  So far we have come up with the following options :

  Option 1 : purchase a dedicated server from hosting service provider. The basic package with Blue host is $150/month which is fairly expensive.

  Option 2 : have the users post to YouTube using their personal accounts. Upon posting to YouTube (via the app) the app would send a notification to the admin that a new video has been posted. Admin would review the video and if acceptable admin would user url link to post video to app. This option, while free, requires many steps that will bog down the submittal process.

  Does anyone know of an effective way to post video to an app that requires approval by an admin ?

• Laravel Spatie - Spatie\MediaLibrary\Jobs\PerformConversions Job Failed

  5 février 2019, par Tout Nu Les Chinois

  I have an issue with Laravel Spatie’s media conversion OR Redis.

  I’m working in TDD, so all my test passed success, even conversion.
  For an input file sample.flv I have my files as expected..

  But when perform integration test my Jobs failed when they are queued.. (redis) And I have no logs.....

  Do you already have trouble with jobs and conversion ?

  job chained failed

  I am Using Laravel Spatie and Laravel-ffmpeg.

  The chained job

  ProcessPost::withChain([
  
              new AssociateMedias($post, $filenames),
  
              new AssociateTags($post, $tags, $user),
  
              new ActivatePost($post),
  
              new AttributeBadge('post', $user),
  
              new UpdateScore(100, $user)
  
          ])->dispatch($post)->allOnQueue('default');

  Here my Assoc Job

  public function handle()
  
      {
  
          array_map(function($name){
  
              $this->mediable->associate(UploadFiles::getTempDir() . $name);
  
          }, $this->filenames);
  
      }

  Here the assoc function in my Media trait

     /**
  
       * @param $path
  
       * @return Media
  
       * @throws DiskDoesNotExist
  
       * @throws FileDoesNotExist
  
       * @throws FileIsTooBig
  
       */
  
      public function associateVideo($path){
  
          $media = $this->addMedia($path)
  
                        ->toMediaCollection('videos');
  
  
  
          VideoConverter::toHls(
  
              'public',
  
              $media->originalPath(),
  
              $media->streamPath()
  
          );
  
  
  
          VideoConverter::toMp4(
  
              'public',
  
              $media->originalPath(),
  
              $media->downloadPath()
  
          );
  
  
  
          Storage::disk('public')->delete($media->originalPath());
  
  
  
          return $media;
  
      }

  And here my Conversion lib

  static function toMp4($disk, $path, $to) {
  
          $lowBitrateFormat = (new X264('aac'))->setKiloBitrate(500);
  
  
  
          FFMpeg::fromDisk($disk)
  
              ->open($path)
  
              ->addFilter(function ($filters) {
  
                  $filters->resize(new Dimension(960, 540));
  
              })
  
              ->export()
  
              ->inFormat($lowBitrateFormat)
  
              ->save($to);
  
      }