Recherche avancée

Sur d’autres sites (8971)

• Making use of -w option in pyinstaller does not start/create the subprocess in python

  15 novembre 2018, par User

  I am making use of python to invoke ffmpeg to start and stop video capturing. I do not want to the console window appear when my python exe starts. The code I have currently to start and stop video recording is below,

  cmd = '\\ffmpeg\\bin\\ffmpeg.exe -loglevel quiet -f gdigrab -framerate 30 -i desktop -vcodec libx264 -pix_fmt yuv420p -preset slow -crf 0 -threads 0 ' + '"' + final_file_for_video_processing + '"'
  
  
  
  def stop_screen_recording():
  
      sub_process.stdin.write("q".encode())
  
      stdOutput, stdError = sub_process.communicate()
  
  
  
  
  
  def stop_screen_recording(cmd):
  
      startupinfo = subprocess.STARTUPINFO()
  
      startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
  
      global sub_process
  
      sub_process = subprocess.Popen(cmd, startupinfo=startupinfo, 
  
      stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=None)
  
      sub_process.wait()

  The challenge faced is, when I build the exe using
  pyinstaller -w —onefile python_file_name.py the recording does not begin. Note : The -w is to not show the console window.

  If I were to make use of pyinstaller and build the exe in the following way,
  pyinstaller —onefile python_file_name.py then recording of the video begins.
  Note : Without the -w command it works perfectly fine.

  I want to make use of the -w command since I do not want to show the console window of my python exe. Any insights will help.

• Web camera Logitech and Linux

  8 novembre 2019, par Nick Saw

  I have Logitech C310 camera with the declared characteristics of 720p 30fps.

  If you connect the camera to windows, the recording is fully consistent with the stated 720p 30fps - the picture is clear.

  The challenge is to connect the same camera to OrangePI (server Armbian) and to save video files on it.

  The camera appears as /dev/video0.

  sudo ffmpeg -f v4l2 -s 1280x720 -i /dev/video0 output.wmv

  As a result, I get a crumbly picture with a frequency of 5 fps.

  Maybe I’m using ffmpeg incorrectly ? Please help me who has experience with Web cameras on Linux ...
  Thanks in advance.

  USB-camera configuration :

  v4l2-ctl --all --device=/dev/video0
  
  
  
  
  
  Driver Info (not using libv4l2):
  
          Driver name   : uvcvideo
  
          Card type     : UVC Camera (046d:081b)
  
          Bus info      : usb-1c1c000.usb-1
  
          Driver version: 4.14.18
  
          Capabilities  : 0x84200001
  
                  Video Capture
  
                  Streaming
  
                  Extended Pix Format
  
                  Device Capabilities
  
          Device Caps   : 0x04200001
  
                  Video Capture
  
                  Streaming
  
                  Extended Pix Format
  
  Priority: 2
  
  Video input : 0 (Camera 1: ok)
  
  Format Video Capture:
  
          Width/Height      : 1280/720
  
          Pixel Format      : 'YUYV'
  
          Field             : None
  
          Bytes per Line    : 2560
  
          Size Image        : 1843200
  
          Colorspace        : sRGB
  
          Transfer Function : Default
  
          YCbCr/HSV Encoding: Default
  
          Quantization      : Default
  
          Flags             :
  
  Crop Capability Video Capture:
  
          Bounds      : Left 0, Top 0, Width 1280, Height 720
  
          Default     : Left 0, Top 0, Width 1280, Height 720
  
          Pixel Aspect: 1/1
  
  Selection: crop_default, Left 0, Top 0, Width 1280, Height 720
  
  Selection: crop_bounds, Left 0, Top 0, Width 1280, Height 720
  
  Streaming Parameters Video Capture:
  
          Capabilities     : timeperframe
  
          Frames per second: 5.000 (5/1)
  
          Read buffers     : 0
  
                       brightness (int)    : min=0 max=255 step=1 default=128 value=128
  
                         contrast (int)    : min=0 max=255 step=1 default=32 value=32
  
                       saturation (int)    : min=0 max=255 step=1 default=32 value=32
  
   white_balance_temperature_auto (bool)   : default=1 value=1
  
                             gain (int)    : min=0 max=255 step=1 default=64 value=192
  
             power_line_frequency (menu)   : min=0 max=2 default=2 value=2
  
        white_balance_temperature (int)    : min=0 max=10000 step=10 default=4000 value=4610 flags=inactive
  
                        sharpness (int)    : min=0 max=255 step=1 default=24 value=24
  
           backlight_compensation (int)    : min=0 max=1 step=1 default=0 value=0
  
                    exposure_auto (menu)   : min=0 max=3 default=3 value=3
  
                exposure_absolute (int)    : min=1 max=10000 step=1 default=166 value=249 flags=inactive
  
           exposure_auto_priority (bool)   : default=0 value=1
  
                        led1_mode (menu)   : min=0 max=3 default=3 value=3
  
                   led1_frequency (int)    : min=0 max=131 step=1 default=0 value=0

• File not found at path : on laravel 5.6

  9 mars 2018, par syehbi herbian

  i am using laravel 5.6, i will try to make function multiple upload video, and get frame and duration with laravel-ffmpeg, but when i try to upload one video for example, always show error like "File not found at path :",

  this is my function to store video and get duration & frame :

  public function doCreate($lessonsid)
  
    {
  
        if (empty(Session::get('contribID'))) {
  
          return redirect('contributor/login');
  
        }
  
      # code...
  
      // validate
  
      // read more on validation at http://laravel.com/docs/validation
  
      $rules = array(
  
        'judul'          => 'required',
  
      //   'video.*'  => 'mimes:mp4,mov,ogg,webm |required|max:100000',
  
      //   'image.*' => 'mimes:jpeg,jpg,png,gif|required|max:30000'
  
      );
  
      $validator = Validator::make(Input::all(), $rules);
  
  
  
      // process the login
  
      if ($validator->fails()) {
  
          return redirect()->back()->withErrors($validator)->withInput();
  
      } else {
  
  
  
          $now          = new DateTime();
  
          $cid          = Session::get('contribID');
  
          $title        = Input::get('judul');
  
          $image_video = Input::file('image');
  
          $lessons_video = Input::file('video');
  
          // dd($lessons_video);
  
          // $media = FFMpeg::open('https:/dev.cilsy.id/assets/source/lessons/lessons-74/video-8/1. Introduction (2).mp4');
  
          // $frame = $media->getFrameFromString('00:00:13.37');
  
          // dd($media);    
  
          $description  = Input::get('desc');
  
  
  
          $video=Video::where('lessons_id',$lessonsid)->get();
  
          $count_video=count($video);
  
  
  
  
  
          if (!is_dir("assets/source/lessons/lessons-$lessonsid")) {
  
                  $newforder=mkdir("assets/source/lessons/lessons-".$lessonsid);
  
          }
  
  
  
          $i=$count_video + 1;
  
          foreach ($title as $key => $titles) {
  
                  $type_video =$lessons_video[$key]->getMimeType();
  
  
  
                  if (!is_dir("assets/source/lessons/lessons-".$lessonsid."/video-".$i)) {
  
                          $newforder=mkdir("assets/source/lessons/lessons-".$lessonsid."/video-".$i);
  
                  }
  
                  $DestinationPath= 'assets/source/lessons/lessons-'.$lessonsid.'/video-'.$i;
  
                  //insert image
  
                  if(!empty($image_video[$key])){
  
                      $imagefilename    = $image_video[$key]->getClientOriginalName();
  
                      $image_video[$key]->move($DestinationPath, $imagefilename);
  
                  }else{
  
                      $imagefilename    = '';
  
                  }
  
                  if($imagefilename ==''){
  
                      $url_image= $imagefilename;
  
                  }else{
  
                      $urls=url('');
  
                      $url_image= $urls.'/assets/source/lessons/video-'.$i.'/'.$imagefilename;
  
                  }
  
  
  
                  //insert video
  
                  if(!empty($lessons_video[$key])){
  
                      $lessonsfilename    = $lessons_video[$key]->getClientOriginalName();
  
                      $lessons_video[$key]->storeAs($DestinationPath, $lessonsfilename);
  
                  }else{
  
                      $lessonsfilename    = '';
  
                  }
  
                  if($lessonsfilename ==''){
  
                      $url_video= $lessonsfilename;
  
                  }else{
  
                      $urls=url('');
  
                      $url_video= $urls.'/assets/source/lessons/video-'.$i.'/'.$lessonsfilename;
  
                  }
  
  
  
  
  
  
  
  
  
                  $store                  = new Video;
  
                  $store->lessons_id      = $lessonsid;
  
                  $store->title           = $titles;
  
                  $store->image           = $url_image;
  
                  $store->video           = $url_video;
  
                  $store->description     = $description[$key];
  
                  $store->type_video      = $type_video;
  
                  $store->durasi          = 0;
  
                  $store->created_at      = $now;
  
                  $store->enable=1;
  
                  $store->save();
  
                  if($store){
  
                      $media = FFMpeg::open($url_video);
  
                      // $frame = FFMpeg::open($link)
  
                      //         ->getFrameFromSeconds(10)
  
                      //         ->export()
  
                      //         ->toDisk('public')
  
                      //         ->save($filename.'.png');
  
                      dd($media);
  
                      $durationInSeconds = $media->getDurationInSeconds();
  
                      // dd($media);
  
  
  
  
  
                  }
  
          $i++;
  
          }
  
  
  
          // Session::set('lessons_title',$title);
  
          // Session::set('lessons_category_id',$category_id);
  
          // Session::set('lessons_image',$image);
  
          // Session::set('lessons_description',$description);
  
  
  
          return redirect('contributor/lessons/'.$lessonsid.'/view')->with('success','Penambahan video berhasil');
  
  
  
      }
  
    }

  this is message error, when i try to upload my video

  

  anyone can help me ?