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• lavf/qsv_scale : add scaling modes support

  18 juin 2019, par Zhong Li

  lavf/qsv_scale : add scaling modes support
  low_power mode will use a fixed HW engine (SFC), thus can offload EU usage.
  
  high quality mode will take EU usage (AVS sampler).
  Performance and EU usage (Render usage) comparsion on Intel(R) Xeon(R) CPU E3-1225 v5 @ 3.30GHz :
  High quality mode : ffmpeg -hwaccel qsv -c:v h264_qsv -i bbb_sunflower_1080p_30fps_normal_2000frames.h264 \
  
   vf scale_qsv=w=1280:h=736:mode=hq -f null -
  
  fps=389
  
  RENDER usage : 28.10 (provided by MSDK metrics_monitor)
  Low Power mode : ffmpeg -hwaccel qsv -c:v h264_qsv -i /bbb_sunflower_1080p_30fps_normal_2000frames.h264 \
  
   vf scale_qsv=w=1280:h=736:mode=low_power -f null -
  
  fps=343
  
  RENDER usage : 0.00
  Low power mode (SFC) may be disabled if not supported by
  
  MSDK/Driver/HW, and replaced by AVS mode interanlly.
  Signed-off-by : Zhong Li <zhong.li@intel.com>
  

  • [DH] libavfilter/vf_scale_qsv.c

• Laravel FFMpeg - Unable to load FFMpeg in file error

  13 juin 2022, par dtwoo

  I'm trying to integrate FFMpeg into a Laravel project but am getting the error when I call the end point :

  


  FFMpeg\Exception\ExecutableNotFoundException: Unable to load FFMpeg in file /Users/me/Desktop/video/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Driver/FFMpegDriver.php on line 55

  


  What I've done :

  


  brew install ffmpeg - installed FFMEG locally, can confirm that this works when using terminal

  


  Fresh Laravel install composer create-project laravel/laravel example-app

  


  Install php ffmpeg composer require php-ffmpeg/php-ffmpeg

  


  install Laravel ffmpeg composer require pbmedia/laravel-ffmpeg

  


  added FFMPEG to providers and aliases in app.php :

  


  'providers' => [
    ...
    ProtoneMedia\LaravelFFMpeg\Support\ServiceProvider::class,
    ...
];

'aliases' => [
    ...
    'FFMpeg' => ProtoneMedia\LaravelFFMpeg\Support\FFMpeg::class
    ...
];


  


  and then my controller is

  


  <?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use FFMpeg;

class VideoController extends Controller
{
    public function makeVideo()
    {

        FFMpeg::fromDisk('songs')
    ->open('yesterday.mp3')
    ->export()
    ->toDisk('converted_songs')
    ->inFormat(new \FFMpeg\Format\Audio\Aac)
    ->save('yesterday.aac');
        return "hello";
    }
}


  


  which is the example they give on git. if I call the end point I get the above error. Has anyone got any ideas what's wrong or how to debug ? The logs don't give me any more information !

  


• How to open&save a video file in python ?

  27 août 2014, par AliGH

  I’ve just started to make a ubuntu application using PyGtk. My very first object is to open, convert and then save a video file. Ignoring convert phase, I’m going to implant open-save functions. But at the moment when I open a video file, and save it, I get non-video file with 11B size. I’ve just google this and found OpenCV for python. But I’m not sure if it’s the best way to do it. I also think I’m going to use ffmpeg libraries to do some manipulates on video files. Is it what I want or there might be other built-in libraries ?

  By the way, here’s my code to open and save the file :

      def on_openFile_clicked(self, widget):
  
          filename=None
  
          dialog = Gtk.FileChooserDialog("Please choose a file", self,
  
              Gtk.FileChooserAction.OPEN,
  
              (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
  
               Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
  
  
  
          response = dialog.run()
  
          self.add_filters(dialog)
  
  
  
          if response == Gtk.ResponseType.OK:
  
              filename = dialog.get_filename()
  
          elif response == Gtk.ResponseType.CANCEL:
  
              print 'Cancel Clicked'
  
          dialog.destroy()
  
  
  
          print "File Choosen: ", filename
  
  
  
      def add_filters(self, dialog):
  
  
  
          filter_py = Gtk.FileFilter()
  
          filter_py.set_name("Video Files")
  
          filter_py.add_mime_type("video/mp4")
  
          filter_py.add_mime_type("video/x-flv")
  
          dialog.add_filter(filter_py)
  
  
  
          filter_any = Gtk.FileFilter()
  
          filter_any.set_name("Any files")
  
          filter_any.add_pattern("*")
  
          dialog.add_filter(filter_any)
  
  
  
      def on_saveFile_clicked(self, widget):
  
          filename=None
  
          dialog = Gtk.FileChooserDialog("Please choose a file", self,
  
              Gtk.FileChooserAction.SAVE,
  
              (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
  
               Gtk.STOCK_SAVE, Gtk.ResponseType.OK))
  
  
  
          response = dialog.run()
  
          self.add_filters(dialog)
  
  
  
          if response == Gtk.ResponseType.OK:
  
              filename = dialog.get_filename()
  
          elif response == Gtk.ResponseType.CANCEL:
  
              print 'Cancel Clicked'
  
          dialog.destroy()
  
  
  
          if filename != None:
  
              save_file=open(filename, 'w')
  
              save_file.write("Sample Data")
  
              save_file.close()
  
          print "File Saved: ", filename