Recherche avancée

Sur d’autres sites (8373)

• Gstreamer basic tutorial gives blank screen

  11 novembre 2013, par user763410

  I have the following gstreamer basic tutorial. When I compile and run the program, I am only getting a blank screen. The same happens when I use mplayer, but I supply -vo x11 option to it and it works well(for mplayer). So, I am guessing the issue gstreamer is also the same. So, my question is..."What should I do to tell the program that my output driver is x11 ?" How do I get rid of the blank screen ?

  Thanks

  #include <gst></gst>gst.h>
  
  
  
  int main(int argc, char *argv[]) {
  
    GstElement *pipeline;
  
    GstBus *bus;
  
    GstMessage *msg;
  
  
  
    /* Initialize GStreamer */
  
    gst_init (&amp;argc, &amp;argv);
  
  
  
    /* Build the pipeline */
  
    /*
  
      pipeline = gst_parse_launch ("playbin2 uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm", NULL);
  
    */
  
      pipeline = gst_parse_launch ("playbin2 uri=file:///home/mylogin/gstreamerstuff/sintel_trailer-480p.webm", NULL);
  
  
  
    /* Start playing */
  
    gst_element_set_state (pipeline, GST_STATE_PLAYING);
  
  
  
    /* Wait until error or EOS */
  
    bus = gst_element_get_bus (pipeline);
  
    msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
  
  
  
    /* Free resources */
  
    if (msg != NULL)
  
      gst_message_unref (msg);
  
    gst_object_unref (bus);
  
    gst_element_set_state (pipeline, GST_STATE_NULL);
  
    gst_object_unref (pipeline);
  
    return 0;
  
  }

• Unable to add watermark to uploaded video using protonemedia / laravel-ffmpeg

  24 avril 2021, par Kashif Anwar

  thank you for the amazing package, i am using it first time and i am stuck in it, maybe i am doing something wrong. I am trying to add a watermark on a video so users couldn't download the original video. below is my code to upload a video first and then add watermark to that video :

  


  public function watermarkpost(Request $request)
{

    if ($file = $request->file('watermark')) 
    {      
       $name = time().str_replace(' ', '', $file->getClientOriginalName());
       $file->move('assets/images/products',$name);           
    }
        FFMpeg::open(asset('assets/images/products/'.$name))->addWatermark(function(WatermarkFactory $watermark) {
            $watermark
            ->open(asset('assets/images/1571567292logo.png') )
            ->right(25)
            ->bottom(25);
        });
   
    // return asset('assets/images/products/'.$name);
}


  


  but i am getting below error :

  


  Alchemy\\BinaryDriver\\Exception\\ExecutableNotFoundException(code: 0): Executable not found, proposed : ffmpeg at F:\\xampp\\htdocs\\GeniusCart\\project\\vendor\\alchemy\\binary-driver\\src\\Alchemy\\BinaryDriver\\AbstractBinary.php:159)


  


  Any help would be really appreciated

  


• Errors when use mps in NVDEC ?

  4 avril 2019, par johnsondeng

  I use ffmpeg compiled with cuda, support nvdec to decode h264 in gpu devices. MPS(https://docs.nvidia.com/deploy/mps/index.html) can share context with different processes, and this can use less gpu storage when use multi-process to decode h264 stream. But when I use ffmpeg in this mode, error got like this.

  Input #0, mpeg, from '/data/yt_traffic/media/nianjianbiao.mp4':
  
  Duration: 00:16:57.97, start: 7833.134000, bitrate: 4219 kb/s
  
  Stream #0:0[0x1e0]: Video: h264 (High), yuv420p(progressive), 1920x1080, 25 fps, 25 tbr, 90k tbn, 50 tbc
  
  File '1.yuv' already exists. Overwrite ? [y/N] y
  
  [AVHWDeviceContext @ 0x4444840] Could not initialize the CUDA driver API
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (h264 (h264_cuvid) -> rawvideo (native))
  
  Error while opening decoder for input stream #0:0 : Unknown error occurred

  But when mps is shutdown, ffmpeg works fine. Anyone can help ?